E V A L U A T I O N K IT A V A I L A B L E
19-5865; Rev 0; 6/11
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
General Description
The MAX98089 is a full-featured audio codec whose high
performance and low power consumption make it ideal
for portable applications.
Class D speaker amplifiers provide efficient amplification
for two speakers. Low radiated emissions enable completely filterless operation. Integrated bypass switches
optionally connect an external amplifier to the transducer
when the Class D amplifiers are disabled.
The IC features a stereo Class H headphone amplifier
that utilizes a dual-mode charge pump to maximize efficiency while outputting a ground referenced signal that
does not require output coupling capacitors.
The IC also features a mono differential amplifier that can
also be configured as a stereo line output.
Two differential analog microphone inputs are available as
well as support for two PDM digital microphones. Integrated
switches allow for an additional microphone input as well
as microphone signals to be routed out to external devices.
Two flexible single-ended or differential line inputs may be
connected to an FM radio or other sources.
Integrated FlexSoundK technology improves loudspeaker performance by optimizing the signal level and frequency response while limiting the maximum distortion
and power at the output to prevent speaker damage.
Automatic gain control (AGC) and a noise gate optimize
the signal level of microphone input signals to make best
use of the ADC dynamic range.
The device is fully specified over the -40N C to +85N C
extended temperature range.
FlexSound is a trademark of Maxim Integrated Products, Inc.
Features
S 5.6mW Power Comsumption (DAC to HP at 97dB DR)
101dB DR Stereo DAC (8kHz < f
S
93dB DR Stereo ADC (8kHz < f
S
Stereo Low EMI Class D Amplifiers
S
1.7W/Channel (8I , V
2.9W/Channel (4I , V
Efficient Class H Headphone Amplifier
S
Differential Receiver Amplifier/Stereo Line Outputs
S
2 Stereo Single-Ended/Mono Differential Line
S
SPK�VDD
SPK�VDD
< 96kHz)
S
< 96kHz)
S
= 5.0V)
= 5.0V)
Inputs
3 Differential Microphone Inputs
S
FlexSound Technology
S
5-Band Parametric EQ
Automatic Level Control (ALC)
Excursion Limiter
Speaker Power Limiter
Speaker Distortion Limiter
Microphone Automatic Gain Control
and Noise Gate
Dual I
S
Asynchronous Digital Mixing
S
Supports Master Clock Frequencies from 10MHz
S
2
S/PCM/TDM Digital Audio Interfaces
to 60MHz
RF Immune Analog Inputs and Outputs
S
Extensive Click-and-Pop Reduction Circuitry
S
Available in 63-Bump WLP Package (3.80mm x
S
3.30mm, 0.4mm Pitch) and 56-Pin TQFN Package
(7mm x 7mm x 0.75mm)
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part,
refer to www.maxim-ic.com/MAX98089.related .
Simplified Block Diagram
2
I2S/PCM
S/PCM
I
DIGITAL
DIGITAL
INTERFACE
FLEXSOUND
• 5-BAND PARAMETRIC EQ
• AUTOMATIC LEVEL CONTROL
• LOUDSPEAKER PROCESSING
• EXCURSION LIMITER
• THD LIMITER
• POWER LIMITER
• MICROPHONE PROCESSING
• AUTOMATIC GAIN CONTROL
• NOISE GATE
• ASYNCHRONOUS DIGITAL MIXING
AUDIO
TECHNOLOGY
MAX98089
AUDIO
INTERFACE
RECEIVER/LINEOUT AMPS
DAC
DAC
SPEAKER AMP
SPEAKER AMP
MIX
HEADPHONE AMP
HEADPHONE AMP
LINEIN A1
LINEIN A2
LINEIN B1
LINEIN B2
DIGITAL MICROPHONE
+
+
I2C
CONTROL
INPUT
ADC
MIX
ADC
����������������������������������������������������������������� Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
TABLE OF CONTENTS
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features
Simplified Block Diagram
Functional Diagram
Absolute Maximum Ratings
Electrical Characteristics
Digital Input/Output Characteristics
Input Clock Characteristics
Audio Interface Timing Characteristics
Digital Microphone Timing Characterstics
2
I
Power Consumption
Typical Operating Characteristics
Pin Configuration
Pin Description
Detailed Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
C Timing Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Microphone to ADC
Line to ADC
Line-In Pin Direct to ADC
Digital Loopback
Analog Loopback
DAC to Receiver
Line to Receiver
DAC-to-Line Output
Line-to-Line Output
DAC to Speaker
Line to Speaker
DAC to Headphone
Line to Headphone
Speaker Bypass Switch
2
C Slave Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
I
Registers
Power Management
Microphone Inputs
Line Inputs
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
����������������������������������������������������������������� Maxim Integrated Products 2
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
TABLE OF CONTENTS (continued)
ADC Input Mixers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Record Path Signal Processing
Microphone AGC
Noise Gate
ADC Record Level Control
Sidetone
Digital Audio Interfaces
Clock Control
Sample Rate Converter
Passband Filtering
Playback Path Signal Processing
Playback Level Control
DAC Input Mixers
Receiver Amplifier
Speaker Amplifiers
Speaker Amplifier Signal Processing
Headphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Output Bypass Switches
Click-and-Pop Reduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Automatic Level Control
Parametric Equalizer
Receiver Output Mixer
Receiver Output Volume
Speaker Output Mixers
Excursion Limiter
Speaker Output Volume
Power Limiter
Distortion Limiter
DirectDrive Headphone Amplifier
Charge Pump
Class H Operation
Headphone Ground Sense (HPSNS)
Headphone Output Mixers
Headphone Output Volume
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
����������������������������������������������������������������� Maxim Integrated Products 3
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
TABLE OF CONTENTS (continued)
Jack Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Jack Insertion
Accessory Button Detection
Jack Removal
Battery Measurement
Device Status
2
C Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
I
Bit Transfer
START and STOP Conditions
Early STOP Conditions
Device Revision
Slave Address
Acknowledge
Write Data Format
Read Data Format
Applications Information
Typical Operating Circuits
Filterless Class D Operation
RF Susceptibility
Startup/Shutdown Sequencing
Component Selection
Optional Ferrite Bead Filter
Input Capacitor
Charge-Pump Capacitor Selection
Charge-Pump Flying Capacitor
Charge-Pump Holding Capacitors
Unused Pins
Recommended PCB Routing
Supply Bypassing, Layout, and Grounding
WLP Applications Information
Ordering Information
Package Information
Revision History
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
����������������������������������������������������������������� Maxim Integrated Products 4
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Functional Diagram
F6
REF G6
REG
BIAS
MAX98089
G5
AVDD
G4
DVDD
SDIN2
DATA
INPUT
HIZOFF2
SDOUT2
DATA
OUTPUT
PORT S2 PORT S1
LRCLKS2 SDOUTS2 SDINS2 DVDDS2
LRCLKS1 SDOUTS1 SDINS1 DVDDS1 BCLKS2
D1 D4 D2 E4 E1 F2 F3 G1 G3 G2
BCLKS1
MCLK
MAS2
LRCLK2
FRAME
CLOCK
BIT
BCLK2
SDIN1
SDOUT1
LRCLK1
BCLK1
SEL1 SEL2
CLOCK
MAS2
DAI2
DATA
INPUT
HIZOFF1 SDIEN1 SDIEN2
DATA
OUTPUT
MAS1
FRAME
CLOCK
BIT
CLOCK
MAS1
DAI1
A6
RECP/
RXINP
RECN/
LOUTL/
RECBYP
RECLEN
0dB
RECVOLL:
+8dB TO -62dB
RECVOLR:
+8dB TO -62dB
MIX
MIXRECL
LBEN1
DV1G:
0/6/12/18dB
+
LTEN1
DVST:
0dB TO -60dB
MUX
LBEN2
CLOCK
RXINN B6
LOUTR/
0dB
MIX
TM
TECHNOLOGY
FLEXSOUND
+
MIX
SIDETONE
CONTROL
SPKBYP
RECREN
LINEMODE
MULTI BAND ALC
DSTS
A3, B3
SPKLVDD
MIXRECR
DVEQ2:
DVEQ1:
SPVOLL:
+8dB TO -62dB
0dB TO -15dB
0dB TO -15dB
A4, B4
SPKLP
AUTOMATIC
A5, B5
SPKLN
+6dB
MIX
5-BAND
PARAMETRIC
5-BAND
PARAMETRIC
NOISE GATE
GAIN
SPLEN
EQ
EQ
CONTROL
C4, C5
SPKLGND
SPKRVDD C3, D3
POWER/
DISTORTION LIMITER
MIXSPL
DACL
MIX
EXCURSION LIMITER
EQ1EN EQ2EN
VOICE
AUDIO/
FILTERS
AVFLT
MODE1
DALEN
AVRG: 0/6/
AVLG: 0/6/
MIXDAL
AUDIO
ADLEN
12/18dB
12/18dB
SPKRP C1, C2
FILTERS
ADCL
MIX
DV2:
AVR:0dB
AVL:0dB
+6dB
TO -15dB
TO -15dB
SPKRN A1, B1
SPREN
MIX
DCB2
0dB TO -15dB
SAMPLE RATE
SPKRGND A2, B2
SPVOLR:
+8dB TO -62dB
MIXSPR
CONVERTER
SRMIX_
MIXADL
MIXHPL_
AUDIO/
HPVOLL:
PATH SEL
VOICE
ADCR
C9
HPL
+3dB TO -67dB
MIX
DACR
MIX
FILTERS
MODE1
DV1:
0dB TO -15dB
ADREN
MIX
DAREN
DVFLT
HPLEN
MIXHPL
MIXDAR
MIXADR
C8
HPSNS
HPVOR:
+3dB TO -67dB
MIXHPR_
PATH SEL
MIX
A9
HPR D9
PVDD A7
HPGND
B7 B8 A8
HPREN
HPVSS
PUMP
CHARGE
B9
HPVDD C1N C1P
MIXHPR
C6, C7, D5, D6, D7, E3
N.C.
G7
AGND
F1
DGND
0/20/30dB
INABYP
PGAINA:
+20dB TO -6dB
INADIFF
INA1/EXTMICP
F9
MIC1N/
DIGMICCLK
F8
PA1EN:
EXTMIC
0/20/30dB
MIC2BYP
PGAM2:
+20dB TO 0dB
G9 MIC2P
PA2EN:
EXTMIC
G8 MIC2N
PGAM1:
+20dB TO 0dB
E5 F5 F4 E2
IRQ
C
2
I
SCL
SDA
JACK
JACKSNS
E6
DETECTION
JDETEN
REG
MBEN
MIC1P/
MICBIAS
F7
DIGMICDATA
E8
PGAINA:
+20dB TO -6dB
INA2/EXTMICN
E9
INBDIFF
PGAINB:
+20dB TO -6dB
PGAINB:
+20dB TO -6dB
+
+
INB2
INB1
E7
D8
NOTE: BUMP NUMBERS SHOWN FOR WLP PACKAGE.
SEE THE PIN DESCRIPTION SECTION FOR TQFN PINOUT.
����������������������������������������������������������������� Maxim Integrated Products 5
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
ABSOLUTE MAXIMUM RATINGS
(Voltages with respect to AGND.)
DVDD, AVDD, PVDD, HPVDD
SPKLVDD, SPKRVDD, DVDDS1, DVDDS2
DGND, HPGND, SPKLGND, SPKRGND
HPVSS
............................... (HPGND - 2.2V) to (HPGND + 0.3V)
C1N
.................................... (HPVSS - 0.3V) to (HPGND + 0.3V)
C1P
.....................................(HPGND - 0.3V) to (HPVDD + 0.3V)
REF, MICBIAS
................................. -0.3V to (SPKLVDD + 0.3V)
..............................-0.3V to +2.2V
..........-0.3V to +6.0V
..............-0.1V to +0.1V
MCLK, SDINS1, SDINS2, JACKSNS,
SDA, SCL, IRQ
LRCLKS1, BCLKS1, SDOUTS1
LRCLKS2, BCLKS2, SDOUTS2
.................................................-0.3V to +6.0V
......... -0.3V to (DVDDS1 + 0.3V)
......... -0.3V to (DVDDS2 + 0.3V)
REG, INA1/EXTMICP, INA2/EXTMICN, INB1, INB2,
MIC1P/DIGMICDATA, MIC1N/DIGMICCLK,
MIC2P, MIC2N
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
..................................................-0.3V to +2.2V
ELECTRICAL CHARACTERISTICS
(V
= V
AVDD
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out loads (R
2.2F F, C
0dB, AV
MICBIAS
DACGAIN
= 12.288MHz, LRCLK = 48kHz, MAS = 0. T
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER SUPPLY
Supply Voltage Range Guaranteed by PSRR
Total Supply Current
(Notes 2 and 3)
Shutdown Supply Current
(Note 2)
REF Voltage 2.5 V
REG Voltage 0.79 V
Shutdown to Full Operation
PVDD
= V
DVDD
= C
REG
= 0dB, AV
= V
DVDDS1
LOUT
= 1F F, C
ADCLVL
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
DVDDS2
= 1.8V, V
SPKLVDD
) connected from LOUTL or LOUTR to SPKLGND. R
C1N-C1P
= 0dB, AV
= 1F F, C
ADCGAIN
= T
A
MIN
HPVDD
= 0dB, AV
to T
= C
HPVSS
PGAIN_
, unless otherwise noted. Typical values are at TA = +25N C.) (Note 1)
MAX
Full-duplex 8kHz mono,
receiver output, MAS = 1
DAC playback 48kHz
I
VDD
stereo, headphone
outputs, MAS = 1
DAC playback 48kHz
stereo, speaker outputs,
MAS = 1
T
= +25N C
A
VSEN = 0
VSEN = 1
............................... (HPGND - 0.3V) to (HPGND + 0.3V)
HPSNS
HPL, HPR
............................(HPVSS - 0.3V) to (HPVDD + 0.3V)
RECP/LOUTL/RXINP, RECP/LOUTR/
RXINN
.....................(SPKLGND - 0.3V) to (SPKLVDD + 0.3V)
SPKLP, SPKLN
SPKRP, SPKRN
Continuous Power Dissipation (T
...........(SPKLGND - 0.3V) to (SPKLVDD + 0.3V)
.........(SPKRGND - 0.3V) to (SPKRVDD + 0.3V)
= +70N C)
A
63-Bump WLP (derate 25.6mW/N C above +70N C)
56-Pin TQFN (derate 40mW/N C above +70N C)
Operating Temperature Range
Storage Temperature Range
Soldering Temperature (reflow)
= V
SPKRVDD
= 1F F. AV
= 0dB, AV
V
SPKLVDD
DVDD
V
DVDDS1
= 3.7V. Speaker loads (Z
= RHP = J , R
LOAD
, V
AVDD
, V
DVDDS2
HP_
SPKRVDD
= +20dB, AV
= 0dB, AV
, V
PVDD
MICPRE_
, V
.......................... -40N C to +85N C
............................ -65N C to +150N C
......................................+260N C
) connected between
SPK
= J , Z
REC
MICPGA_
REC
= 0dB, AV
= 0dB, AV
SPK_
2.8 5.5
1.65 1.8 2
1.65 3.6
Analog 4.5 8
Speaker 1.6 2.3
Digital 1.3 2
Analog 1.9 3
Speaker 0.001 0.0058
Digital 2.47 3.5
Analog 3.6 6.5
Speaker 6.41 8.5
Digital 2.49 3.5
Analog 0.2 2
Speaker 0.01 1
Digital 1 5
30
17
........2.05W
...............3.2W
= J , C
SPK
REF
DACATTN
= 0dB, MCLK
mA
F A
ms
=
=
V V
����������������������������������������������������������������� Maxim Integrated Products 6
Low-Power, Stereo Audio Codec
with FlexSound Technology
ELECTRICAL CHARACTERISTICS (continued)
(V
= V
AVDD
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out loads (R
2.2F F, C
0dB, AV
MICBIAS
DACGAIN
= 12.288MHz, LRCLK = 48kHz, MAS = 0. T
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MICROPHONE TO ADC PATH
Dynamic Range DR
Total Harmonic Distortion +
Noise
Common-Mode Rejection
Ratio
Power-Supply Rejection Ratio PSRR
Path Phase Delay
MICROPHONE PREAMP
Full-Scale Input AV
Preamplifier Gain AV
PGA Gain AV
MIC Input Resistance R
PVDD
= V
DVDD
= C
REG
= 0dB, AV
= V
DVDDS1
LOUT
= 1F F, C
ADCLVL
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
DVDDS2
= 1.8V, V
SPKLVDD
) connected from LOUTL or LOUTR to SPKLGND. R
C1N-C1P
= 0dB, AV
= 1F F, C
ADCGAIN
= T
A
MIN
= 8kHz, MODE = 0 (IIR voice), AV
f
S
HPVDD
= 0dB, AV
to T
= C
HPVSS
PGAIN_
, unless otherwise noted. Typical values are at TA = +25N C.) (Note 1)
MAX
(Note 4)
V
THD+N
CMRR V
= 0.1V
IN
MICPRE_
AV
MICPRE_
= 100mV
IN
V
AVDD
, fS = 8kHz, f = 1kHz -78
P-P
= 0dB, VIN = 1V
= +30dB, VIN = 32mV
, f = 217Hz 74 dB
P-P
= 1.65V to 1.95V, input referred,
MIC inputs floating
= 200mV
RIPPLE
f = 1kHz, V
f = 10kHz, V
RIPPLE
RIPPLE
= 200mV
= 200mV
1kHz, 0dB input,
highpass filter disabled
measured from analog
input to digital output
= 0dB 1.05 V
MICPRE_
MICPGA_
IN_MIC
MICPRE_
(Note 5)
(Note 5)
All gain settings, measured at MIC1P/
MIC1N/MIC2P/MIC2N
MAX98089
= V
SPKRVDD
= 1F F. AV
= 0dB, AV
P-P
P-P
P-P
P-P
MODE = 0 (IIR voice)
8kHz
MODE = 0 (IIR voice)
16kHz
MODE = 1 (FIR audio)
8kHz
MODE = 1 (FIR audio)
48kHz
PA1EN/PA2EN = 01 0
PA1EN/PA2EN = 11 29.5 30 30.5
PGAM1/PGAM2 = 0x00 19 20 21
PGAM1/PGAM2 = 0x14
= 3.7V. Speaker loads (Z
= RHP = J , R
LOAD
HP_
MICPRE_
= +20dB, AV
= 0dB, AV
REC
= 0dB
MICPRE_
SPK
= J , Z
REC
MICPGA_
= 0dB, AV
88 dB
, f = 1kHz -85
, f = 1kHz -71
P-P
50 62
, input referred 62
, input referred 62
, input referred 55
2.2
1.1
4.5
0.76
50
) connected between
= 0dB, AV
SPK_
0
= J , C
SPK
DACATTN
= 0dB, MCLK
REF
dB AV
dB f = 217Hz, V
ms
P-P
dB PA1EN/PA2EN = 10 19.5 20 20.5
dB
kI
=
=
����������������������������������������������������������������� Maxim Integrated Products 7
Low-Power, Stereo Audio Codec
with FlexSound Technology
ELECTRICAL CHARACTERISTICS (continued)
(V
= V
AVDD
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out loads (R
2.2F F, C
0dB, AV
MICBIAS
DACGAIN
= 12.288MHz, LRCLK = 48kHz, MAS = 0. T
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MICROPHONE BIAS
MICBIAS Output Voltage V
Load Regulation I
Line Regulation V
Ripple Rejection
Noise Voltage
MICROPHONE BYPASS SWITCH
On-Resistance R
Total Harmonic Distortion +
Noise
Off-Isolation
Off-Leakage Current
LINE INPUT TO ADC PATH
Dynamic Range (Note 4) DR
Total Harmonic Distortion +
Noise
Gain Error
Power-Supply Rejection Ratio PSRR
PVDD
= V
DVDD
= C
REG
= 0dB, AV
= V
DVDDS1
LOUT
= 1F F, C
ADCLVL
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
DVDDS2
= 1.8V, V
SPKLVDD
) connected from LOUTL or LOUTR to SPKLGND. R
C1N-C1P
MICBIASILOAD
= 1F F, C
= 0dB, AV
A
ADCGAIN
= T
LOAD
SPKLVDD
f = 217Hz, V
f = 10kHz, V
MIN
= 1mA 2.15 2.2 2.25 V
= 1mA to 2mA 0.5 4.5 mV
= C
HPVDD
to T
HPVSS
= 0dB, AV
MAX
PGAIN_
, unless otherwise noted. Typical values are at TA = +25N C.) (Note 1)
= 2.8V to 5.5V 110
RIPPLE (SPKLVDD)
RIPPLE (SPKLVDD)
A-weighted, f = 20Hz to 20kHz 3.9
P-weighted, f = 20Hz to 4kHz 2.1
f = 1kHz 50
I
= 100mA, INABYP = MIC2BYP = 1,
ON
THD+N
MIC1_
V
MIC2_
V
IN
= V
= 2V
= 0V, AVDD, TA = +25N C
INA_
, VCM = 0.9V, RL = 10kI ,
P-P
f = 1kHz, INABYP = MIC2BYP = 1
V
IN
V
MIC1_
= 2V
, VCM = 0.9V, RL = 10kI , f = 1kHz
P-P
= [0V, AVDD], V
[AVDD, 0V]
INA pin direct, f
= 48kHz, MODE = 1
S
(FIR audio)
THD+N V
IN
= 1V
, f = 1kHz -82 -74 dB
P-P
DC accuracy 1 %
V
= 1.65V to 1.95V, input referred,
AVDD
line inputs floating, T
f = 217Hz, V
AV
ADC
f = 1kHz, V
AV
ADC
f = 10kHz, V
AV
ADC
RIPPLE
= 0dB, input referred
RIPPLE
= 0dB, input referred
RIPPLE
= 0dB, input referred
A
= 200mV
= 200mV
= 200mV
= V
SPKRVDD
= 1F F. AV
= 0dB, AV
= 100mV
= 100mV
MIC2_/VINA_
= +25N C
P-P
,
P-P
P-P
= 3.7V. Speaker loads (Z
= RHP = J , R
LOAD
MICPRE_
= +20dB, AV
= 0dB, AV
HP_
P-P
P-P
=
,
,
MAX98089
) connected between
SPK
= J , Z
REC
MICPGA_
= 0dB, AV
REC
-1 +1
57 68
SPK
= 0dB, AV
SPK_
92
83
5 30
-80 dB
60 dB
93 dB
63
63
57
= J , C
DACATTN
REF
=
=
= 0dB, MCLK
F V
dB
F V
RMS
nV/√Hz
I
FA
dB
����������������������������������������������������������������� Maxim Integrated Products 8
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
ELECTRICAL CHARACTERISTICS (continued)
(V
= V
AVDD
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out loads (R
2.2F F, C
0dB, AV
MICBIAS
DACGAIN
= 12.288MHz, LRCLK = 48kHz, MAS = 0. T
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LINE INPUT PREAMP
Full-Scale Input V
Level Adjust Gain AV
Input Resistance R
Feedback Resistance R
ADC LEVEL CONTROL
ADC Level Adjust Range AV
ADC Level Step Size 1 dB
ADC Gain Adjust Range AV
ADC Gain Adjust Step Size 6 dB
ADC DIGITAL FILTERS
VOICE MODE IIR LOWPASS FILTER (MODE1 = 0)
Passband Cutoff f
Passband Ripple f < f
Stopband Cutoff f
Stopband Attenuation
(Note 6)
PVDD
= V
DVDD
= C
REG
= 0dB, AV
= V
DVDDS1
LOUT
= 1F F, C
ADCLVL
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
) connected from LOUTL or LOUTR to SPKLGND. R
C1N-C1P
= 0dB, AV
IN
DVDDS2
= 1F F, C
ADCGAIN
= T
A
MIN
AV
PGAIN_
AV
PGAIN_
= 1.8V, V
HPVDD
= 0dB, AV
to T
MAX
SPKLVDD
= C
HPVSS
PGAIN_
= V
SPKRVDD
= 1F F. AV
= 0dB, AV
= 3.7V. Speaker loads (Z
= RHP = J , R
LOAD
MICPRE_
= +20dB, AV
= 0dB, AV
HP_
REC
, unless otherwise noted. Typical values are at TA = +25N C.) (Note 1)
= 0dB 1
= -6dB 1.4
SPK
= J , Z
REC
MICPGA_
= 0dB, AV
) connected between
SPK
= 0dB, AV
SPK_
PGAINA/PGAINB = 0x0 19 20 21
PGAINA/PGAINB = 0x1 13 14 15
PGAINA/PGAINB = 0x2 2 3 4
PGAINA/PGAINB = 0x3 0
PGAINA/PGAINB = 0x4 -4 -3 -2
PGAINA/PGAINB = 0x5,
0x6, 0x7
= +25N C
T
A
T
= T
MIN
to T
MAX
A
-7 -6 -5
18 20 22
16 24
-0.1 +0.1 dB
74 dB
PGAIN_
IN
IN_FB
ADCLVL
ADCGAIN
PLP
SLP
TA = +25N C
(Note 5)
AV
AV
AV
AV
AV
AV
= +20dB 14.5 21 28
PGAIN_
= +14dB 20
PGAIN_
= +3dB 20
PGAIN_
= 0dB 7.5 10 14
PGAIN_
= -3dB 20
PGAIN_
= -6dB 20
PGAIN_
INAEXT/INBEXT = 1
AVL/AVR = 0xF to 0x0 (Note 5) -12 +3 dB
AVLG/AVRG = 00 to 11 (Note 5) 0 18 dB
Ripple limit cutoff 0.441 x fs
-3dB cutoff 0.449 x fs
PLP
0.47 x fSHz
f > f
SLP
= J , C
DACATTN
= 0dB, MCLK
V
REF
P-P
dB
kI
kI
Hz
=
=
����������������������������������������������������������������� Maxim Integrated Products 9
Low-Power, Stereo Audio Codec
with FlexSound Technology
ELECTRICAL CHARACTERISTICS (continued)
(V
= V
AVDD
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out loads (R
2.2F F, C
0dB, AV
MICBIAS
DACGAIN
= 12.288MHz, LRCLK = 48kHz, MAS = 0. T
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
VOICE MODE IIR HIGHPASS FILTER (MODE1 = 0)
Passband Cutoff
(-3dB from Peak)
Stopband Cutoff
(-30dB from Peak)
DC Attenuation DC
STEREO AUDIO MODE FIR LOWPASS FILTER (MODE1 = 1, DHF1 = 0, LRCLK < 50kHz)
Passband Cutoff f
Passband Ripple f < f
Stopband Cutoff f
Stopband Attenuation
(Note 6)
ADC STEREO AUDIO MODE FIR LOWPASS FILTER (MODE1 = 1, DHF1 = 1, LRCLK > 50kHz)
Passband Cutoff f
Passband Ripple f < f
Stopband Cutoff f
Stopband Attenuation f < f
PVDD
= V
DVDD
= C
REG
= 0dB, AV
= V
DVDDS1
LOUT
= 1F F, C
ADCLVL
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
) connected from LOUTL or LOUTR to SPKLGND. R
C1N-C1P
= 0dB, AV
DVDDS2
= 1F F, C
ADCGAIN
= T
A
MIN
= 1.8V, V
HPVDD
= 0dB, AV
to T
MAX
SPKLVDD
= C
HPVSS
= V
= 1F F. AV
PGAIN_
SPKRVDD
= 0dB, AV
= 3.7V. Speaker loads (Z
= RHP = J , R
LOAD
MICPRE_
= +20dB, AV
= 0dB, AV
HP_
, unless otherwise noted. Typical values are at TA = +25N C.) (Note 1)
AVFLT = 0x1 (Elliptical tuned for fS = 16kHz +
217Hz notch)
AVFLT = 0x2 (500Hz Butterworth tuned for f
=
S
16kHz)
f
AHPPB
AVFLT = 0x3 (Elliptical tuned for fS = 8kHz + 217Hz
notch)
AVFLT = 0x4 (500Hz Butterworth tuned for fS =
8kHz)
AVFLT = 0x5 (fS/240 Butterworth)
AVFLT = 0x1 (Elliptical tuned for fS = 16kHz +
217Hz notch)
AVFLT = 0x2 (500Hz Butterworth tuned for f
=
S
16kHz)
f
AHPSB
AVFLT = 0x3 (Elliptical tuned for fS = 8kHz + 217Hz
notch)
AVFLT = 0x4 (500Hz Butterworth tuned for fS =
8kHz)
AVFLT = 0x5 (fS/240 Butterworth)
ATTEN
AVFLT ≠ 000
Ripple limit cutoff 0.43 x f
PLP
-6.02dB cutoff 0.5 x f
PLP
SLP
f < f
SLP
PLP
SLP
Ripple limit cutoff 0.208 x f
-3dB cutoff 0.28 x f
PLP
SLP
MAX98089
) connected between
SPK
= J , Z
REC
MICPGA_
REC
= 0dB, AV
= 0dB, AV
0.0139
x f
S
0.0156
x f
S
0.0279
x f
S
0.0312
x f
S
0.0018
x f
S
90 dB
S
S
S
-0.1 +0.1 dB
60 dB
S
S
-0.1 +0.1 dB
60 dB
= J , C
SPK
DACATTN
= 0dB, MCLK
SPK_
0.0161
x f
S
0.0319
x f
S
0.0321
x f
S
0.0632
x f
S
0.0043
x f
S
0.58 x fSHz
0.417 x fSHz
REF
Hz
Hz
Hz -3dB cutoff 0.48 x f
Hz
=
=
���������������������������������������������������������������� Maxim Integrated Products 10
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
ELECTRICAL CHARACTERISTICS (continued)
(V
= V
AVDD
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out loads (R
2.2F F, C
0dB, AV
MICBIAS
DACGAIN
= 12.288MHz, LRCLK = 48kHz, MAS = 0. T
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
STEREO AUDIO MODE DC BLOCKING HIGHPASS FILTER (MODE1 = 1)
Passband Cutoff
(-3dB from Peak)
DC Attenuation DC
MICROPHONE AUTOMATIC GAIN CONTROL
AGC Hold Duration
AGC Attack Time
AGC Release Time
AGC Threshold Level AGCTH = 0x0 to 0xF -3 +18 dB
AGC Threshold Step Size 1 dB
AGC Gain (Note 5) 0 20 dB
ADC NOISE GATE
NG Threshold Level ANTH = 0x3 to 0xF, referred to 0dBFS -64 -16 dB
NG Attenuation (Note 5) 0 12 dB
ADC-TO-DAC DIGITAL SIDETONE (MODE = 0)
Sidetone Gain Adjust Range AV
Sidetone Gain Adjust Step
Size
Sidetone Path Phase Delay
ADC-TO-DAC DIGITAL LOOP-THROUGH PATH
Dynamic Range (Note 4) DR
Total Harmonic Distortion +
Noise
DAC LEVEL CONTROL
DAC Attenuation Range AV
DAC Attenuation Step Size 1 dB
DAC Gain Adjust Range AV
DAC Gain Adjust Step Size 6 dB
PVDD
= V
DVDD
= C
REG
= 0dB, AV
= V
DVDDS1
LOUT
= 1F F, C
ADCLVL
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
) connected from LOUTL or LOUTR to SPKLGND. R
C1N-C1P
= 0dB, AV
f
AHPPB
Atten
= 1.8V, V
DVDDS2
= 1F F, C
ADCGAIN
= T
A
MIN
AVFLT ≠ 000
AVFLT ≠ 000
HPVDD
= 0dB, AV
to T
SPKLVDD
= C
MAX
= V
SPKRVDD
= 1F F. AV
HPVSS
= 0dB, AV
PGAIN_
, unless otherwise noted. Typical values are at TA = +25N C.) (Note 1)
= 3.7V. Speaker loads (Z
= RHP = J , R
LOAD
MICPRE_
= +20dB, AV
= 0dB, AV
HP_
REC
SPK
= J , Z
REC
MICPGA_
= 0dB, AV
) connected between
SPK
= 0dB, AV
SPK_
0.000125
x f
90 dB
AGCHLD = 01 50
AGCHLD = 11 400
AGCATK = 00 2
AGCATK = 11 123
AGCRLS = 000 0.078
AGCRLS = 111 10
STGA
DVST = 0x01 -0.5
DVST = 0x1F -60.5
2 dB
1kHz, 0dB input, highpass filter
disabled
8kHz 2.2
16kHz 1.1
= 48kHz, MCLK = 12.288MHz, MODE = 1
f
THD+N
DACATTN
DACGAIN
S
(FIR audio), MIC to HP output, T
f = 1kHz, f
= 48kHz, MCLK = 12.288MHz, MODE =
S
= +25N C
A
1 (FIR audio), MIC to HP output
DV_ = 0xF to 0x0 (Note 5) -15 0 dB
DV1G = 00 to 11 (Note 5) 0 18 dB
83 93 dB
81 dB
= J , C
DACATTN
= 0dB, MCLK
S
REF
Hz
ms
ms
s
dB
ms
=
=
���������������������������������������������������������������� Maxim Integrated Products 11
Low-Power, Stereo Audio Codec
with FlexSound Technology
ELECTRICAL CHARACTERISTICS (continued)
(V
= V
AVDD
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out loads (R
2.2F F, C
0dB, AV
MICBIAS
DACGAIN
= 12.288MHz, LRCLK = 48kHz, MAS = 0. T
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DAC DIGITAL FILTERS
VOICE MODE IIR LOWPASS FILTER (MODE1 = 0)
Passband Cutoff f
Passband Ripple f < f
Stopband Cutoff f
Stopband Attenuation
(Note 6)
VOICE MODE IIR HIGHPASS FILTER (MODE1 = 0)
Passband Cutoff
(-3dB from Peak)
Stopband Cutoff
(-30dB from Peak)
DC Attenuation DC
STEREO AUDIO MODE FIR LOWPASS FILTER (MODE1 = 1, DHF1/DHF2 = 0, LRCLK < 50kHz)
Passband Cutoff f
Passband Ripple f < f
Stopband Cutoff f
Stopband Attenuation
(Note 6)
PVDD
= V
DVDD
= C
REG
= 0dB, AV
= V
DVDDS1
LOUT
= 1F F, C
ADCLVL
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
) connected from LOUTL or LOUTR to SPKLGND. R
C1N-C1P
= 0dB, AV
DVDDS2
= 1F F, C
ADCGAIN
= T
A
MIN
= 1.8V, V
HPVDD
= 0dB, AV
to T
MAX
SPKLVDD
= C
HPVSS
= V
= 1F F. AV
PGAIN_
SPKRVDD
= 0dB, AV
= 3.7V. Speaker loads (Z
= RHP = J , R
LOAD
MICPRE_
= +20dB, AV
= 0dB, AV
HP_
, unless otherwise noted. Typical values are at TA = +25N C.) (Note 1)
PLP
SLP
Ripple limit cutoff 0.448 x f
-3dB cutoff 0.451 x f
PLP
f > f
SLP
DVFLT = 0x1 (Elliptical tuned for fS = 16kHz +
217Hz notch)
DVFLT = 0x2 (500Hz Butterworth tuned for f
=
S
16kHz)
f
DHPPB
DVFLT = 0x3 (Elliptical tuned for fS = 8kHz + 217Hz
notch)
DVFLT = 0x4 (500Hz Butterworth tuned for fS =
8kHz)
DVFLT = 0x5 (fs/240 Butterworth)
DVFLT = 0x1 (Elliptical tuned for fS = 16kHz +
217Hz notch)
DVFLT = 0x2 (500Hz Butterworth tuned for f
=
S
16kHz)
f
DHPSB
DVFLT = 0x3 (Elliptical tuned for fS = 8kHz + 217Hz
notch)
DVFLT = 0x4 (500Hz Butterworth tuned for fS =
8kHz)
DVFLT = 0x5 (fS/240 Butterworth) 0.0021 x f
ATTEN
DVFLT ≠ 000
Ripple limit cutoff 0.43 x f
PLP
-6.02dB cutoff 0.5 x f
PLP
SLP
f > f
SLP
MAX98089
) connected between
SPK
= J , Z
REC
MICPGA_
REC
= 0dB, AV
= 0dB, AV
S
S
-0.1 +0.1 dB
75 dB
0.0139 x f
0.0156 x f
0.0279 x f
0.0312 x f
S
S
S
S
S
85 dB
S
S
S
-0.1 +0.1 dB
60 dB
= J , C
SPK
= 0dB, MCLK
SPK_
0.476 x f
0.0161
x f
0.0312
x f
0.0321
x f
0.0625
x f
0.0042
x f
0.58 x f
DACATTN
S
S
S
S
S
S
S
REF
Hz
Hz
Hz
Hz
Hz -3dB cutoff 0.47 x f
Hz
=
=
���������������������������������������������������������������� Maxim Integrated Products 12
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
ELECTRICAL CHARACTERISTICS (continued)
(V
= V
AVDD
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out loads (R
2.2F F, C
0dB, AV
MICBIAS
DACGAIN
= 12.288MHz, LRCLK = 48kHz, MAS = 0. T
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
STEREO AUDIO MODE FIR LOWPASS FILTER (MODE1 = 1, DHF1/DHF2 = 1 for LRCLK > 50kHz)
Passband Cutoff f
Passband Ripple f < f
Stopband Cutoff f
Stopband Attenuation
(Note 6)
STEREO AUDIO MODE DC BLOCKING HIGHPASS FILTER
Passband Cutoff
(-3dB from Peak)
DC Attenuation DC
AUTOMATIC LEVEL CONTROL
Dual Band Lowpass Corner
Frequency
Dual Band Highpass Corner
Frequency
Gain Range 0 12 dB
Low-Signal Threshold ALCTH = 111 to 001 -48 -12 dBFS
Release Time
PARAMETRIC EQUALIZER
Number of Bands 5 Bands
Per Band Gain Range -12 +12 dB
Preattenuator Gain Range (Note 5) -15 0 dB
Preattenuator Step Size 1 dB
DAC TO RECEIVER AMPLIFIER PATH
Dynamic Range DR f
Total Harmonic Distortion +
Noise
Power-Supply Rejection Ratio PSRR
Click-and-Pop Level K
PVDD
= V
DVDD
= C
REG
= 0dB, AV
= V
DVDDS1
LOUT
= 1F F, C
ADCLVL
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
) connected from LOUTL or LOUTR to SPKLGND. R
C1N-C1P
= 0dB, AV
PLP
SLP
f
DHPPB
ATTEN
DVDDS2
= 1F F, C
ADCGAIN
= T
A
MIN
= 1.8V, V
HPVDD
= 0dB, AV
to T
MAX
SPKLVDD
= C
HPVSS
PGAIN_
= V
SPKRVDD
= 1F F. AV
= 0dB, AV
= 3.7V. Speaker loads (Z
= RHP = J , R
LOAD
MICPRE_
= +20dB, AV
= 0dB, AV
HP_
REC
, unless otherwise noted. Typical values are at TA = +25N C.) (Note 1)
Ripple limit cutoff 0.24 x f
-3dB cutoff 0.31 x f
PLP
f < f
SLP
DVFLT ≠ 000 (DAI1), DCB2 = 1 (DAI2)
DVFLT ≠ 000 (DAI1), DCB2 = 1 (DAI2)
) connected between
SPK
= J , Z
REC
MICPGA_
= 0dB, AV
S
S
SPK
= 0dB, AV
SPK_
-0.1 +0.1 dB
0.477 x fSHz
60 dB
0.000104
x f
90 dB
ALCMB = 1 5 kHz
ALCMB = 1 5 kHz
ALCRLS = 101 0.25
ALCRLS = 000 8
= 48kHz, f = 1kHz (Note 4) 96 dB
S
THD+N
CP
f = 1kHz, P
V
SPKLVDD
f = 217Hz, V
f = 1kHz, V
f = 10kHz, V
= 15mW, R
OUT
REC
= 2.8V to 5.5V, TA = +25N C
= 200mV
RIPPLE
= 200mV
RIPPLE
RIPPLE
= 200mV
P-P
Peak voltage, A-weighted, 32
samples per second, AV
REC
0dB
= 32I
64 75
P-P
P-P
Into shutdown -68
=
Out of shutdown -72
-70 -63 dB
80
80
77
= J , C
REF
DACATTN
= 0dB, MCLK
Hz
S
Hz
s
dB
dBV
=
=
���������������������������������������������������������������� Maxim Integrated Products 13
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
ELECTRICAL CHARACTERISTICS (continued)
(V
= V
AVDD
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out loads (R
2.2F F, C
0dB, AV
MICBIAS
DACGAIN
= 12.288MHz, LRCLK = 48kHz, MAS = 0. T
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LINE INPUT TO RECEIVER AMPLIFIER PATH
Dynamic Range (Note 4) DR Referenced to full-scale output level 94 dB
Total Harmonic Distortion +
Noise
Click-and-Pop Level K
RECEIVER AMPLIFIER
Output Power P
Full-Scale Output (Note 7) 1 V
Volume Control (Note 5) AV
Volume Control Step Size
Mute Attenuation f = 1kHz 88 dB
Capacitive Drive Capability No sustained oscillations
DAC TO LINE OUT AMPLIFIER PATH
Dynamic Range (Note 4) DR f
Total Harmonic Distortion +
Noise
LINE INPUT TO LINE OUT AMPLIFIER PATH
Dynamic Range (Note 4) DR Referenced to full-scale output level 92 dB
Total Harmonic Distortion +
Noise
Full-Scale Output (Note 7) 2 V
Mute Attenuation f = 1kHz 85 dB
Output Offset Voltage V
Capacitive Drive Capability
PVDD
= V
DVDD
= C
REG
= 0dB, AV
= V
DVDDS1
LOUT
= 1F F, C
ADCLVL
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
) connected from LOUTL or LOUTR to SPKLGND. R
C1N-C1P
= 0dB, AV
DVDDS2
= 1F F, C
ADCGAIN
= T
A
MIN
= 1.8V, V
HPVDD
= 0dB, AV
to T
MAX
SPKLVDD
= C
HPVSS
= V
= 1F F. AV
PGAIN_
SPKRVDD
= 0dB, AV
= 3.7V. Speaker loads (Z
= RHP = J , R
LOAD
MICPRE_
= +20dB, AV
= 0dB, AV
HP_
REC
SPK
= J , Z
REC
MICPGA_
= 0dB, AV
) connected between
= J , C
SPK
= 0dB, AV
DACATTN
= 0dB, MCLK
SPK_
, unless otherwise noted. Typical values are at TA = +25N C.) (Note 1)
THD+N -64 dB
CP
OUT
REC
Peak voltage, A-weighted, 32
samples per second, AV
REC
0dB
R
= 32I , f = 1kHz, THD = 1%
REC
RECVOL = 0x00 -62
RECVOL = 0x1F 8
Into shutdown -51
=
Out of shutdown -49
dBV
92 mW
+8dB to +6dB 0.5
+6dB to +0dB 1
0dB to -14dB 2
-14dB to -38dB 3
-38dB to -62dB 4
500
100
-78 -72 dB
76 dB
0.5 Q 4
Q
500 pF
THD+N
THD+N
OS
= 32I
R
REC
R
= J
REC
= 48kHz, f = 1kHz 83 96 dB
S
f = 1kHz, R
f = 1kHz, R
AV
REC_
No sustained oscillations, R
= 1kI
L
= 10kI
L
= -62dB
= 1kI
L
REF
RMS
dB
dB
pF
P-P
mV
=
=
���������������������������������������������������������������� Maxim Integrated Products 14
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
ELECTRICAL CHARACTERISTICS (continued)
(V
= V
AVDD
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out loads (R
2.2F F, C
0dB, AV
MICBIAS
DACGAIN
= 12.288MHz, LRCLK = 48kHz, MAS = 0. T
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DAC TO SPEAKER AMPLIFIER PATH
Total Harmonic Distortion +
Noise
Crosstalk
Output Noise 53
Click-and-Pop Level K
MIC INPUT TO SPEAKER AMPLIFIER PATH
Dynamic Range (Note 4) DR Referenced to full-scale output level, AV
Total Harmonic Distortion +
Noise
Click-and-Pop Level K
SPEAKER AMPLIFIER
Output Power P
Full-Scale Output (Note 7) 2 V
Volume Control AV
PVDD
= V
DVDD
= C
REG
= 0dB, AV
= V
DVDDS1
LOUT
= 1F F, C
ADCLVL
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
) connected from LOUTL or LOUTR to SPKLGND. R
C1N-C1P
= 0dB, AV
THD+N
CP
THD+N
CP
OUT
SPK_
DVDDS2
= 1F F, C
ADCGAIN
= T
A
MIN
f = 1kHz, P
= 1.8V, V
HPVDD
= 0dB, AV
to T
MAX
OUT
SPKLVDD
= C
= 200mW, Z
= V
= 1F F. AV
HPVSS
PGAIN_
, unless otherwise noted. Typical values are at TA = +25N C.) (Note 1)
SPKL to SPKR and SPKR to SPKL,
= 640mW, f = 1kHz
P
OUT
Peak voltage, A-weighted,
32 samples per second,
AV
= 0dB
SPK_
f = 1kHz, P
= 200mW, RL = 8I + 68F H
OUT
Peak voltage, A-weighted, 32
samples per second, AV
SPK_
0dB
V
f = 1kHz,
THD = 10%,
Z
= 4I +
SPK
33F H
f = 1kHz,
THD = 1%,
= 4I +
Z
SPK
33F
H
f = 1kHz,
THD = 10%,
= 8I +
Z
SPK
68F H
f = 1kHz,
THD = 1%,
= 8I +
Z
SPK
68F H
(Note 5)
SPKLVDD
V
SPKLVDD
V
SPKLVDD
V
SPKLVDD
V
SPKLVDD
V
SPKLVDD
V
SPKLVDD
V
SPKLVDD
V
SPKLVDD
V
SPKLVDD
V
SPKLVDD
V
SPKLVDD
V
SPKLVDD
V
SPKLVDD
V
SPKLVDD
V
SPKLVDD
SPVOLL/SPVOLR = 0x00 -62
SPVOLL/SPVOLR = 0x1F +8
SPKRVDD
= 0dB, AV
SPK
= 3.7V. Speaker loads (Z
= RHP = J , R
LOAD
MICPRE_
= +20dB, AV
= 0dB, AV
HP_
= 8I + 68F H
Into shutdown 65
Out of shutdown 66
= 0dB 82 dB
SPK_
Into shutdown 55
=
Out of shutdown 52
= V
= V
= V
= V
= V
= V
= V
= V
= V
= V
= V
= V
= V
= V
= V
= V
SPKRVDD
SPKRVDD
SPKRVDD
SPKRVDD
SPKRVDD
SPKRVDD
SPKRVDD
SPKRVDD
SPKRVDD
SPKRVDD
SPKRVDD
SPKRVDD
SPKRVDD
SPKRVDD
SPKRVDD
SPKRVDD
= 5.0V 2950
= 4.2V 2060
= 3.7V 1570
= 3.0V 1000
= 5.0V 2320
= 4.2V 1620
= 3.7V 1240
= 3.0V 785
= 5.0V 1730
= 4.2V 1210
= 3.7V 930
= 3.0V 600
= 5.0V 1365
= 4.2V 955
= 3.7V 735
= 3.0V 475
MICPGA_
= 0dB, AV
REC
) connected between
SPK
= J , Z
REC
SPK
= 0dB, AV
SPK_
-68 dB
-88 dB
71 dB
= J , C
DACATTN
= 0dB, MCLK
F V
REF
RMS
dBV
dBV
mW
RMS
dB
=
=
���������������������������������������������������������������� Maxim Integrated Products 15
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
ELECTRICAL CHARACTERISTICS (continued)
(V
= V
AVDD
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out loads (R
2.2F F, C
0dB, AV
MICBIAS
DACGAIN
= 12.288MHz, LRCLK = 48kHz, MAS = 0. T
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Volume Control Step Size
Mute Attenuation f = 1kHz 86 dB
Output Offset Voltage V
EXCURSION LIMITER
Upper Corner Frequency
Range
Lower Corner Frequency DHPLCF = 01 to 10 400 Hz
Biquad Minimum Corner
Frequency
Threshold Voltage
Release Time
POWER LIMITER
Attenuation -64 dB
Threshold
Time Constant 1 t
Time Constant 2 t
Weighting Factor
DISTORTION LIMITER
Distortion Limit
Release Time Constant
PVDD
= V
DVDD
= C
REG
= 0dB, AV
= V
DVDDS1
LOUT
= 1F F, C
ADCLVL
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
) connected from LOUTL or LOUTR to SPKLGND. R
C1N-C1P
= 0dB, AV
DVDDS2
= 1F F, C
ADCGAIN
= T
A
MIN
= 1.8V, V
HPVDD
= 0dB, AV
to T
MAX
SPKLVDD
= C
HPVSS
= V
= 1F F. AV
PGAIN_
SPKRVDD
= 0dB, AV
= 3.7V. Speaker loads (Z
= RHP = J , R
LOAD
MICPRE_
= +20dB, AV
= 0dB, AV
HP_
REC
SPK
= J , Z
REC
MICPGA_
= 0dB, AV
) connected between
SPK
= 0dB, AV
SPK_
, unless otherwise noted. Typical values are at TA = +25N C.) (Note 1)
+8dB to +6dB 0.5
+6dB to +0dB 1
0dB to -14dB 2
-14dB to -38dB 3
-38dB to -64dB 4
AV
OS
= -61dB, TA = +25N C Q 0.5 Q 3
SPK_
DHPUCF = 001 to 100 400 1000 Hz
DHPUCF = 000 (fixed mode) 100
DHPUCF = 001 200
DHPUCF = 010 300
DHPUCF = 011 400
DHPUCF = 100 500
Z
= 8I + 68F H, V
SPK
KLVDD
AV
SPK_
= V
= 8dB
SPKRVDD
SP-
= 5.5V,
DHPTH = 000 0.34
DHPTH = 111 0.95
ALCRLS = 101 0.25
ALCRLS = 000 4
= 8I + 68F H, V
Z
PWR1
PWR2
k
PWR
SPK
= V
SPK_
SPKRVDD
= 8dB
KLVDD
AV
PWRT1 = 0x1 0.5
PWRT1 = 0xF 8.7
PWRT2 = 0x1 to 0xF 0.5
PWRT2 = 0xF 8.7
PWRK = 000 to 111 12.5 100 %
SP-
= 5.5V,
PWRTH = 0x1 0.08
PWRTH = 0xF 1.23
THDCLP = 0x1 < 1
THDCLP = 0xF 24
THDT1 = 000 0.76
THDT1 = 111 6.2
= J , C
DACATTN
= 0dB, MCLK
REF
dB
mV
Hz
V
s
W
s
min
%
s
=
=
P
���������������������������������������������������������������� Maxim Integrated Products 16
Low-Power, Stereo Audio Codec
with FlexSound Technology
ELECTRICAL CHARACTERISTICS (continued)
(V
= V
AVDD
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out loads (R
2.2F F, C
0dB, AV
MICBIAS
DACGAIN
= 12.288MHz, LRCLK = 48kHz, MAS = 0. T
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DAC TO HEADPHONE AMPLIFIER PATH
Dynamic Range (Note 4) DR f
Total Harmonic Distortion +
Noise
Crosstalk
Power-Supply Rejection Ratio PSRR
PVDD
= V
DVDD
= C
REG
= 0dB, AV
= V
DVDDS1
LOUT
= 1F F, C
ADCLVL
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
DVDDS2
= 1.8V, V
SPKLVDD
) connected from LOUTL or LOUTR to SPKLGND. R
C1N-C1P
= 1F F, C
= 0dB, AV
A
ADCGAIN
= T
MIN
= 48kHz
S
THD+N f = 1kHz, P
HPL to HPR and HPR to HPL, P
f = 1kHz, R
V
AVDD
f = 217Hz, V
AV
HP_
f = 1kHz, V
AV
HP_
f = 10kHz, V
AV
HP_
HPVDD
= 0dB, AV
to T
OUT
= V
PVDD
= 0dB
RIPPLE
= 0dB
= 0dB
= C
HPVSS
PGAIN_
, unless otherwise noted. Typical values are at TA = +25N C.) (Note 1)
MAX
= 20mW
= 32I
HP
= 1.65V to 2.0V 46 54
= 200mV
RIPPLE
= 200mV
= 200mV
RIPPLE
= V
SPKRVDD
= 1F F. AV
= 0dB, AV
= 3.7V. Speaker loads (Z
= RHP = J , R
LOAD
MICPRE_
= +20dB, AV
= 0dB, AV
HP_
REC
Master or slave mode 101
Slave mode 97
Low power mode,
T
= +25N C
A
= 16I
R
HP
= 32I
R
HP
= 5mW,
OUT
,
P-P
,
P-P
,
P-P
95 97
MAX98089
) connected between
SPK
= J , Z
REC
MICPGA_
= 0dB, AV
= 0dB, AV
-84 -64
-85
-92 dB
72
63
43
= J , C
SPK
DACATTN
= 0dB, MCLK
SPK_
REF
dB
dB
dB
=
=
MODE = 0 (voice) 8kHz 2.2
MODE = 0 (voice)
16kHz
MODE = 1 (music)
8kHz
MODE = 1 (music)
48kHz
1.1
ms
4.5
0.76
DAC Path Phase Delay
1kHz, 0dB input, highpass
filter disabled measured
from digital input to analog
output
Gain Error 1 5 %
Channel Gain Mismatch 1 %
Peak voltage, A-weighted,
Click-and-Pop Level K
32 samples per second,
CP
AV
HP_
LINE INPUT TO HEADPHONE AMPLIFIER PATH
Total Harmonic Distortion +
Noise
THD+N
= 1V
V
IN
= 0dB
, f =1kHz, RHP = 32I
P-P
Into shutdown -62
dBV
Out of shutdown -63
81 dB
Dynamic Range (Note 4) 92.5 dB
Click-and-Pop Level K
Peak voltage, A-weighted,
32 samples per second,
CP
AV
= 0dB
HP_
Into shutdown -62
dBV
Out of shutdown -63
���������������������������������������������������������������� Maxim Integrated Products 17
Low-Power, Stereo Audio Codec
with FlexSound Technology
ELECTRICAL CHARACTERISTICS (continued)
(V
= V
AVDD
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out loads (R
2.2F F, C
0dB, AV
MICBIAS
DACGAIN
= 12.288MHz, LRCLK = 48kHz, MAS = 0. T
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
HEADPHONE AMPLIFIER
Output Power P
Positive Charge-Pump Output
Voltage
Negative Charge-Pump Output Voltage
Output Voltage Threshold
(Output Voltage at which
the Charge Pump Switches
Modes; VOUT Rising; Transition from Split to Invert Mode)
PVDD
= V
DVDD
= C
REG
= 0dB, AV
= V
DVDDS1
LOUT
= 1F F, C
ADCLVL
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
DVDDS2
= 1.8V, V
SPKLVDD
) connected from LOUTL or LOUTR to SPKLGND. R
C1N-C1P
= 0dB, AV
OUT
HPVDD
HPVSS
V
TH
= 1F F, C
ADCGAIN
= T
A
MIN
f = 1kHz, THD = 1%
≤ V
V
OUT
V
> V
OUT
V
≤ V
OUT
V
> V
OUT
RL = J
HPVDD
= 0dB, AV
to T
PVDD
PVDD
PVDD
PVDD
= C
MAX
HPVSS
PGAIN_
, unless otherwise noted. Typical values are at TA = +25N C.) (Note 1)
x 0.2V, RHP = J
x 0.2V, RHP = J
x 0.2V, RHP = J
x 0.2V, RHP = J
= V
SPKRVDD
= 1F F. AV
= 0dB, AV
= 3.7V. Speaker loads (Z
= RHP = J , R
LOAD
HP
HP
HP_
= 32I
= 16I
= +20dB, AV
= 0dB, AV
REC
MICPRE_
R
R
MAX98089
) connected between
SPK
= J , Z
REC
MICPGA_
= 0dB, AV
30
38
PVDD/2
PVDD
-PVDD/2
-PVDD
Q PVDD
x 0.2
= 0dB, AV
= J , C
SPK
DACATTN
= 0dB, MCLK
SPK_
REF
mW
V
V
V
=
=
Full-Scale Output (Note 7) 1 V
Volume Control AV
HP_
(Note 5)
HPVOL_ = 0x00 -67
HPVOL_ = 0x1F +3
RMS
dB
+3dB to +1dB 0.5
+1dB to -5dB 1
Volume Control Step Size
-5dB to -19dB 2
dB
-19dB to -43dB 3
-43dB to -67dB 4
Mute Attenuation f = 1kHz 100 dB
AV
Output Offset Voltage V
OS
= -67dB
HP_
Capacitive Drive Capability No sustained oscillations
T
R
R
A
A
HP
HP
= T
MIN
= 32I
= J
to T
MAX
Q 3
500
100
mV
pF
= +25N C Q 0.1 Q 1
T
SPEAKER BYPASS SWITCH
I
= 100mA, SPKBYP = 1,
On-Resistance R
Total Harmonic Distortion +
Noise
THD+N
Off-Isolation
Off-Leakage Current
ON
SPKL_
V
= [0V, V
RXIN_
= 2V
V
IN
Z
= 8I + 68F H, f = 1kHz,
SPK
, VCM = V
P-P
SPKLVDD
SPKBYP = 1
V
IN
Z
SPK
V
RXIN_
V
SPKL_
= 2V
, VCM = V
P-P
= 8I + 68F H, f = 1kHz
= [0V, V
= [V
SPKLVDD
SPKLVDD
]
SPKLVDD
SPKLVDD
],
, 0V]
/2,
/2,
R
S
R
S
= 10I
= 0I
2.8
60
60
96 dB
-20 +20
I
dB
F A
���������������������������������������������������������������� Maxim Integrated Products 18
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
ELECTRICAL CHARACTERISTICS (continued)
(V
= V
AVDD
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out loads (R
2.2F F, C
0dB, AV
MICBIAS
DACGAIN
= 12.288MHz, LRCLK = 48kHz, MAS = 0. T
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
RECEIVER BYPASS SWITCH
On-Resistance R
Total Harmonic Distortion +
Noise
Off-Isolation
Off-Leakage Current
JACK DETECTION
JACKSNS High Threshold V
JACKSNS Low Threshold V
JACKSNS Sense Voltage MICBIAS disabled, JDWK = 1 3.65 3.7
JACKSNS Sense Resistance R
JACKSNS Weak Pullup Current I
JACKSNS Deglitch Period t
BATTERY ADC
Input Voltage Range 2.6 5.6 V
LSB Size 0.1 V
PVDD
= V
DVDD
= C
REG
= 0dB, AV
= V
DVDDS1
LOUT
= 1F F, C
ADCLVL
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
) connected from LOUTL or LOUTR to SPKLGND. R
C1N-C1P
= 0dB, AV
ON
THD+N
TH1
TH2
SENSE
WPU
GLITCH
= 1.8V, V
DVDDS2
= 1F F, C
A
HPVDD
ADCGAIN
= T
MIN
I
= 100mA, RECBYP = 1, V
RECP
]
VDD
V
= 2V
IN
= C
= 0dB, AV
to T
MAX
, VCM = V
P-P
SPKLVDD
68F H, f = 1kHz, RECBYP = 1, R
V
IN
= 2V
, VCM = V
P-P
68F H, f = 1kHz
V
= [0V, V
RECP
[V
SPKLVDD
SPKLVDD
, 0V]
MICBIAS enabled
MICBIAS disabled
MICBIAS enabled
MICBIAS disabled
HPVSS
PGAIN_
= V
SPKRVDD
= 1F F. AV
= 0dB, AV
= 3.7V. Speaker loads (Z
= RHP = J , R
LOAD
MICPRE_
= +20dB, AV
= 0dB, AV
HP_
REC
SPK
= J , Z
REC
MICPGA_
= 0dB, AV
) connected between
= 0dB, AV
SPK_
, unless otherwise noted. Typical values are at TA = +25N C.) (Note 1)
= [0V, V
SPKLVDD
SPKLVDD
], V
RECN
RECN
/2, Z
S
/2, Z
SPK
= 0I
SPK
=
= 8I +
= 8I +
SPKL-
2
60 %
84 dB
-15 +15
0.92 x
V
MICBIAS
0.92 x
V
SPKLVDD
0.06 x
V
MICBIAS
0.06 x
V
SPKLVDD
0.95 x
V
MICBIAS
0.95 x
V
SPKLVDD
0.10 x
V
MICBIAS
0.10 x
V
SPKLVDD
MICBIAS disabled, JDWK = 0 1.6 2.4 2.9
MICBIAS disabled, JDWK = 1 2 5 9.5
JDEB = 00 25
JDEB = 11 200
SPK
0.98 x
V
MICBIAS
0.98 x
V
SPKLVD
0.17 x
V
MICBIAS
0.17 x
V
SPKLVD
= J , C
DACATTN
= 0dB, MCLK
D
D
REF
I
FA
V
V
kI
F A
ms
=
=
DIGITAL INPUT/OUTPUT CHARACTERISTICS
(V
= V
AVDD
(Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MCLK
Input High Voltage V
Input Low Voltage V
Input Leakage Current I
Input Capacitance 10 pF
PVDD
= V
DVDD
= V
DVDDS1
IH
= V
IH
IL
, I
IL
DVDDS2
V
DVDD
= 1.8V, V
SPKLVDD
= V
SPKRVDD
= 2.0V, VIN = 0V, 5.5V; TA = +25° C
= 3.7V, TA = +25N C, unless otherwise noted.)
1.2 V
0.6 V
-1 +1
���������������������������������������������������������������� Maxim Integrated Products 19
FA
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
DIGITAL INPUT/OUTPUT CHARACTERISTICS (continued)
(V
= V
AVDD
(Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SDINS1, BCLKS1, LRCLKS1—INPUT
Input High Voltage V
Input Low Voltage V
Input Hysteresis 200 mV
Input Leakage Current I
Input Capacitance 10 pF
BCLKS1, LRCLKS1, SDOUTS1—OUTPUT
Output Low Voltage V
Output High Voltage V
Input Leakage Current I
SDINS2, BCLKS2, LRCLKS2—INPUT
Input High Voltage V
Input Low Voltage V
Input Hysteresis 200 mV
Input Leakage Current I
Input Capacitance 10 pF
BCLKS2, LRCLKS2, SDOUTS2—OUTPUT
Output Low Voltage V
Output High Voltage V
Input Leakage Current I
SDA, SCL—INPUT
Input High Voltage V
Input Low Voltage V
Input Hysteresis 210 mV
Input Leakage Current I
Input Capacitance 10 pF
SDA, IRQ —OUTPUT
Output High Current I
Output Low Voltage V
PVDD
= V
DVDD
= V
DVDDS1
IH
IH
IH
IH
IH
IH
, I
OL
OH
, I
IH
, I
OL
OH
, I
IH
, I
OH
OL
= V
DVDDS2
IL
IL
V
DVDDS1
V
DVDDS1
V
DVDDS1
V
DVDD
IL
high-impedance state
IL
IL
V
DVDDS2
V
DVDDS2
V
DVDDS2
V
DVDD
IL
high-impedance state
IL
V
IL
DVDD
V
OUT
V
DVDD
= 1.8V, V
SPKLVDD
= V
SPKRVDD
= 3.7V, TA = +25N C, unless otherwise noted.)
0.7 x
DVDDS1
0.29 x
DVDDS1
= 3.6V, VIN = 0V, 3.6V; TA = +25° C
-1 +1
= 1.65V, IOL = 3mA 0.4 V
= 1.65V, IOH = 3mA
= 2.0V, VIN = 0V, 5.5V; TA = +25° C,
DVDDS1
- 0.4
-1 +1
0.7 x
DVDDS2
0.29 x
DVDDS2
= 3.6V, VIN = 0V, 3.6V; TA = +25° C
-1 +1
= 1.65V, IOL = 3mA 0.4 V
= 1.65V, IOH = 3mA
= 2.0V, VIN = 0V, 5.5V; TA = +25N C,
DVDDS2
- 0.4
-1 +1
0.7 x
DVDD
0.3 x
DVDD
= 2.0V, VIN = 0V, 5.5V; TA = +25N C
= 5.5V, TA = +25° C
= 1.65V, IOL = 3mA
-1 +1
1 mA
0.2 x
DVDD
V
V
F A
V
F A
V
V
F A
V
F A
V
V
F A
V
���������������������������������������������������������������� Maxim Integrated Products 20
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
DIGITAL INPUT/OUTPUT CHARACTERISTICS (continued)
(V
= V
AVDD
(Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DIGMICDATA—INPUT
Input High Voltage V
Input Low Voltage V
Input Hysteresis 125 mV
Input Leakage Current I
Input Capacitance 10 pF
DIGMICCLK—OUTPUT
Output Low Voltage V
Output High Voltage V
PVDD
= V
DVDD
= V
DVDDS1
IH
IH
IL
, I
OL
OH
= V
IL
DVDDS2
V
DVDD
V
DVDD
V
DVDD
= 1.8V, V
= 2.0V, VIN = 0V, 2.0V; TA = +25° C
= 1.65V, IOL = 1mA 0.4 V
= 1.65V, IOH = 1mA
SPKLVDD
= V
SPKRVDD
= 3.7V, TA = +25N C, unless otherwise noted.)
0.65 x
DVDD
0.35 x
DVDD
-25 +25
DVDD -
0.4
V
V
F A
V
INPUT CLOCK CHARACTERISTICS
(V
= V
AVDD
(Note 1)
MCLK Input Frequency f
MCLK Input Duty Cycle
Maximum MCLK Input Jitter 100 ps
LRCLK Sample Rate (Note 8)
DAI1 LRCLK Average Frequency
Error (Note 9)
DAI2 LRCLK Average Frequency
Error (Note 9)
PLL Lock Time
Maximum LRCLK Jitter to Maintain
PLL Lock
Soft-Start/Stop Time 10 ms
= V
PVDD
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DVDD
= V
DVDDS1
= V
MCLK
= 1.8V, V
DVDDS2
PSCLK = 01 40 50 60
PSCLK = 10 or 11 30 70
DHF_ = 0 8 48
DHF_ = 1 48 96
FREQ1 = 0x8 to 0xF 0 0
FREQ1 = 0x0 -0.025 +0.025
Rapid lock mode 2 7
Nonrapid lock mode 12 25
SPKLVDD
= V
SPKRVDD
= 3.7V, TA = +25N C, unless otherwise noted.)
10 60 MHz
-0.025 +0.025 %
100 ns
%
RMS
kHz
%
ms
���������������������������������������������������������������� Maxim Integrated Products 21
Low-Power, Stereo Audio Codec
with FlexSound Technology
AUDIO INTERFACE TIMING CHARACTERISTICS
(V
= V
AVDD
(Note 1)
BCLK Cycle Time t
BCLK High Time t
BCLK Low Time t
BCLK or LRCLK Rise and Fall Time t
SDIN to BCLK Setup Time t
LRCLK to BCLK Setup Time t
SDIN to BCLK Hold Time t
LRCLK to BCLK Hold Time t
Minimum Delay Time from LSB
BCLK Falling Edge to
High-Impedance State
LRCLK Rising Edge to SDOUT
MSB Delay
BCLK to SDOUT Delay t
Delay Time from BCLK to LRCLK t
Delay Time from LRCLK to BCLK
After LSB
PVDD
= V
DVDD
= V
DVDDS1
= V
DVDDS2
= 1.8V, V
SPKLVDD
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
BCLK
BCLKH
BCLKL
, t
R
SETUP
SYNCSET
HOLD
SYNCHOLD
t
HIZOUT
t
SYNCTX
CLKTX
CLKSYNC
t
ENDSYNC
Slave mode 90 ns
Slave mode 20 ns
Slave mode 20 ns
Master mode, CL = 15pF 5 ns
F
Slave mode 20 ns
Slave mode 20 ns
Master mode, TDM_ = 1 42 ns
CL = 30pF, TDM_ = 1, FSW_ = 1 50 ns
CL = 30pF
Master
mode
Master
mode
TDM_ = 1, BCLK rising edge 50
TDM_ = 0 50
TDM_ = 1 -15 +15
TDM_ = 0
TDM_ = 1, FSW_ = 1 20 ns
= V
SPKRVDD
MAX98089
= 3.7V, TA = +25N C, unless otherwise noted.)
20 ns
20 ns
ns
0.8 x
t
BCLKL
ns
t
t
t
HIZOUT
CLKSYNC
F
t
CLKTX
HI-Z MSB
MASTER MODE
t
SETUPtHOLD
MSB LSB
BCLK
(OUTPUT)
LRCLK
(OUTPUT)
SDOUT
(OUTPUT)
SDIN
(INPUT)
t
R
LSB
Figure 1. Non-TDM Audio Interface Timing Diagrams (TDM_ = 0)
���������������������������������������������������������������� Maxim Integrated Products 22
BCLK
(INPUT)
LRCLK
(INPUT)
SDOUT
(OUTPUT)
SDIN
(INPUT)
t
SYNCSET
t
HIZOUT
LSB HI-Z
LSB
SLAVE MODE
t
BCLKH
t
CLKTX
t
BCLK
t
SETUPtHOLD
MSB
t
MSB
BCLKL
Low-Power, Stereo Audio Codec
with FlexSound Technology
t
F
BCLK (OUTPUT)
t
CLKSYNC
LRCLK (OUTPUT)
t
t
SDOUT (OUTPUT)
SDIN (INPUT)
HIZOUT
LSB
CLKTX
HI-Z LSB
MASTER MODE SLAVE MODE
Figure 2. TDM Audio Interface Timing Diagram (TDM_ = 1, FSW_ = 0)
t
R
t
CLKSYNC
MSB
MSB
t
SETUP
t
HOLD
SDOUT (OUTPUT)
BCLK (INPUT)
LRCLK (INPUT)
SDIN (INPUT)
t
SYNCSET
t
HIZOUT
LSB
t
CLKTX
HI-Z LSB
MAX98089
t
BCLK
t
BCLKH
t
SYNCHOLD
MSB
MSB
t
SETUP
t
BCLKL
t
HOLD
BCLK (OUTPUT)
LRCLK (OUTPUT)
SDOUT (OUTPUT)
SDIN (INPUT)
t
F
t
ENDSY NC
t
HIZOUT
LSB M SB
t
SYNCTX
HI-Z LSB MSB
MASTER MODE
t
R
t
CLKSYNC
t
CLKTX
t
SETUP
t
HOLD
BCLK (INPUT)
LRCLK (INPUT)
SDOUT (OUTPUT)
SDIN (INPUT)
Figure 3. TDM Audio Interface Timing Diagram (TDM_ = 1, FSW_ = 1)
DIGITAL MICROPHONE TIMING CHARACTERSTICS
(V
= V
AVDD
(Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DIGMICCLK Frequency f
DIGMICDATA to DIGMICCLK
Setup Time
DIGMICDATA to DIGMICCLK
Hold Time
HPVDD
= V
DVDD
= V
DVDDS1
t
t
= V
MICCLK
SU,MIC
HD,MIC
DVDDS2
= 1.8V, V
SPKLVDD
= V
MICCLK = 00 PCLK/8
MICCLK = 01 PCLK/6
MICCLK = 10
Either clock edge 20 ns
Either clock edge 0 ns
t
HIZOUT
SPKRVDD
t
BCLK
LSB
t
SYNCTX
HI-Z LSB
SLAVE MODE
t
BCLKH
MSB
t
CLKTX
MSB
t
SETUP
t
BCLKL
t
HOLD
= 3.7V, TA = +25N C, unless otherwise noted.)
64 x
f
LRCLK
MHz
���������������������������������������������������������������� Maxim Integrated Products 23
LEFT RIGHT LEFT RIGHT
Figure 4. Digital Microphone Timing Diagram
I2C TIMING CHARACTERISTICS
(V
= V
AVDD
(Note 1)
Serial-Clock Frequency f
Bus Free Time Between STOP and
START Conditions
Hold Time (Repeated) START
Condition
SCL Pulse-Width Low t
SCL Pulse-Width High t
Setup Time for a Repeated START
Condition
Data Hold Time t
Data Setup Time t
SDA and SCL Receiving Rise Time t
SDA and SCL Receiving Fall Time t
SDA Transmitting Fall Time t
Setup Time for STOP Condition t
Bus Capacitance C
Pulse Width of Suppressed Spike t
PVDD
= V
DVDD
= V
DVDDS1
= V
DVDDS2
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SCL
t
BUF
t
HD,STA
LOW
HIGH
t
SU,STA
HD,DAT
SU,DAT
R
F
F
SU,STO
B
SP
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
1/f
MICCLK
t
HD,MICtSU,MIC
t
HD,MICtSU,MIC
= 1.8V, V
SPKLVDD
Guaranteed by SCL pulse-width low and
high
RPU = 475I , CB = 100pF, 400pF
(Note 10)
(Note 10)
RPU = 475I , CB = 100pF, 400pF (Note 10)
Guaranteed by SDA transmitting fall time 400 pF
= V
SPKRVDD
= 3.7V, TA = +25N C, unless otherwise noted.)
0 400 kHz
1.3
0.6
1.3
0.6
0.6
Fs
Fs
Fs
Fs
Fs
0 900 ns
100 ns
20 +
0.1C
20 +
0.1C
20 +
0.05C
0.6
B
B
B
300 ns
300 ns
250 ns
F s
0 50 ns
���������������������������������������������������������������� Maxim Integrated Products 24
Low-Power, Stereo Audio Codec
with FlexSound Technology
I2C TIMING CHARACTERISTICS (continued)
(V
AVDD
(Note 1)
= V
SDA
PVDD
= V
DVDD
= V
t
LOW
DVDDS1
t
SU,DAT
= V
DVDDS2
t
HD,DAT
= 1.8V, V
SPKLVDD
t
SU,STA
= V
SPKRVDD
t
HD,STA
MAX98089
= 3.7V, TA = +25N C, unless otherwise noted.)
t
BUF
t
SP
t
SU,STO
t
HIGH
t
t
R
F
REPEATED START CONDITION
STOP
CONDITION
START
CONDITION
Figure 5. I
SCL
t
HD,STA
START CONDITION
2
C Interface Timing Diagram
Note 1: The IC is 100% production tested at T A = +25N C. Specifications over temperature limits are guaranteed by design.
Note 2:
Analog supply current = I
+ I
DVDDS1
+ I
DVDDS2
.
AVDD
+ I
. Speaker supply current = I
HPVDD
SPKLVDD
+ I
SPKRVDD
. Digital supply current = I
DVDD
Note 3: Clocking all zeros into the DAC.
Note 4: Dynamic range measured using the EIAJ method. -60dBFS, 1kHz output signal, A-weighted and normalized to 0dBFS.
f = 20Hz to 20kHz.
Note 5: Gain measured relative to the 0dB setting.
Note 6: The filter specification is accurate only for synchronous clocking modes, where NI is a multiple of 0x1000.
Note 7: 0dBFS for DAC input. 1V
for INA/INB inputs.
P-P
Note 8: LRCLK may be any rate in the indicated range. Asynchronous or noninteger MCLK/LRCLK ratios may exhibit some full-
scale performance degradation compared to synchronous integer related MCLK/LRCLK ratios.
Note 9: In master-mode operation, the accuracy of the MCLK input proportionally determines the accuracy of the sample clock rate.
Note 10: C B is in pF.
Power Consumption
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
= V
DVDDS2
= 1.8V, V
SPKLVDD
= V
SPKRVDD
= 3.7V, MAS = 0.)
MODE
Playback to Headphone Only
DAC Playback 48kHz Stereo HP
DAC ª HP
Low power mode, 24-bit, music
filters, 256Fs
DAC Playback 48kHz Stereo HP
DAC ª HP
Low power mode, 24-bit, music
filters, 256Fs, 0.1mW/channel,
R
= 32I
HP
���������������������������������������������������������������� Maxim Integrated Products 25
I
AVDD
(mA)
I
PVDD
(mA)
I
SPKVDD
I
SPKLVDD
(mA)
+
I
DVDD
(mA)
I
DVDDS1
I
DVDDS2
(mA)
+
POWER
(mW)
DYNAMIC
RANGE (dB)
1.25 0.47 0.00 1.35 0.01 5.55 97
1.25 1.81 0.00 1.56 0.01 8.32 97
(V
= V
AVDD
DAC Playback to Headphone
DAC Playback 48kHz Stereo HP
DAC ª HP
24-bit, music filters, 256Fs
DAC Playback 48kHz Stereo HP
DAC ª HP
24-bit, music filters, 256Fs, 0.1mW/
channel, R
DAC Playback 44.1kHz Stereo HP
DAC ª HP
24-bit, music filters
DAC Playback 44.1kHz Stereo HP
DAC ª HP
Low power mode, 24-bit, music
filters
DAC Playback 8kHz Stereo HP
DAC ª HP
16-bit, voice filters
DAC Playback 8kHz Stereo HP
DAC ª HP
16-bit, low power mode, voice filters
DAC Playback 8kHz Mono HP
DAC ª HP
16-bit, low power mode, voice filters
Line Playback Stereo HP
INA ª HP
Single-ended inputs
DAC Playback to Class D Speaker
DAC Playback 48kHz Stereo SPK
DAC ª SPK
24-bit, music filters
PVDD
= 32I
HP
= V
MODE
DVDD
= V
DVDDS1
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Power Consumption (continued)
= V
I
AVDD
(mA)
2.04 1.27 0.00 1.53 0.01 8.72 101
2.04 2.11 0.00 1.74 0.01 10.63 101
2.03 1.27 0.00 1.41 0.01 8.46 101
2.31 0.00 6.33 2.14 0.01 31.44 92
= 1.8V, V
DVDDS2
1.25 0.47 0.00 1.25 0.01 5.34 98
2.04 1.27 0.00 1.07 0.00 7.89 96
1.26 0.47 0.00 0.90 0.00 4.72 96
0.77 0.29 0.00 0.79 0.00 3.33 98
2.40 1.27 0.00 0.02 0.00 6.67 95
I
PVDD
(mA)
SPKLVDD
= V
I
SPKVDD
I
SPKLVDD
(mA)
SPKRVDD
+
= 3.7V, MAS = 0.)
I
I
DVDD
(mA)
DVDDS1
I
DVDDS2
(mA)
+
POWER
(mW)
DYNAMIC
RANGE (dB)
���������������������������������������������������������������� Maxim Integrated Products 26
(V
= V
AVDD
DAC Playback 48kHz Mono SPK
DAC ª SPK
24-bit, music filters
Line Playback Mono SPK
INA ª SPKL
Differential inputs
Full Duplex
Full-Duplex 8kHz Mono RCV
MIC1 ª ADC
DAC ª REC
16-bit, voice filters
Full-Duplex 8kHz Stereo HP
MIC1/2 ª ADC
DAC ª HP
16-bit, mixer, voice filters
PVDD
= V
MODE
DVDD
= V
DVDDS1
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Power Consumption (continued)
= V
I
AVDD
(mA)
1.35 0.00 3.23 1.84 0.01 17.69 92
1.01 0.00 3.24 0.03 0.00 13.83 93
11.19 1.27 0.48 1.28 0.01 26.43
= 1.8V, V
DVDDS2
6.32 0.00 1.54 1.24 0.01 19.33
I
PVDD
(mA)
SPKLVDD
= V
I
SPKVDD
I
SPKLVDD
(mA)
SPKRVDD
+
= 3.7V, MAS = 0.)
I
I
DVDD
(mA)
DVDDS1
I
DVDDS2
(mA)
+
POWER
(mW)
DYNAMIC
RANGE (dB)
Record = 93
Playback = 94
Record = 93
Playback = 96
Full-Duplex 8kHz Stereo HP
MIC1/2 ª ADC
DAC ª HP
16-bit, low power mode, voice filters
Line Record
Line Stereo Record 48kHz
INA ª ADC
24-bit, low power, music filters
Line Stereo Record 48kHz
INA ª ADC
Direct pin input, 24bit, low power,
music filters
7.12 0.47 0.48 1.10 0.02 17.44
6.19 0.00 0.20 1.31 0.15 14.47 91
5.69 0.00 0.20 1.31 0.12 13.53 93
Record = 93
Playback = 96
���������������������������������������������������������������� Maxim Integrated Products 27
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
Microphone to ADC
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (MIC TO ADC)
0
MCLK = 13MHz
-10
LRCLK = 8kHz
-20
FREQ MODE
= 1V
V
IN
AV
MICPRE_
P-P
= 0dB
FREQUENCY (Hz)
1k 100 10 10k
-30
-40
-50
-60
THD+N RATIO (dB)
-70
-80
-90
-100
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (MIC TO ADC)
0
MCLK = 12.288MHz
-10
LRCLK = 96kHz
-20
NI MODE
VIN = 1V
-30
-40
-50
-60
THD+N RATIO (dB)
-70
-80
-90
-100
P-P
AV
= 0dB
MICPRE_
10 100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (MIC TO ADC)
0
MCLK = 13MHz
-10
MAX98089 toc01
THD+N RATIO (dB)
LRCLK = 44.1kHz
PLL MODE
-20
= 1V
V
IN
-30
-40
-50
-60
-70
-80
-90
P-P
AV
= 0dB
MICPRE_
10 100k
FREQUENCY (Hz)
10k 1k 100
MAX98089 toc02
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (MIC TO ADC)
0
MCLK = 13MHz
-10
MAX98089 toc04
10k 1k 100
LRCLK = 8kHz
-20
FREQ MODE
= 0.1V
V
IN
-30
AV
MICPRE_
-40
-50
-60
THD+N RATIO (dB)
-70
-80
-90
-100
P-P
= +20dB
FREQUENCY (Hz)
MAX98089 toc05
1k 100 10 10k
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (MIC TO ADC)
0
MCLK = 12.288MHz
-10
LRCLK = 48kHz
-20
NI MODE
= 1V
V
IN
-30
-40
-50
-60
THD+N RATIO (dB)
-70
-80
-90
-100
P-P
AV
= 0dB
MICPRE_
10 100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (MIC TO ADC)
0
MCLK = 13MHz
-10
LRCLK = 8kHz
-20
FREQ MODE
= 0.032V
V
IN
MICPRE_
P-P
= +30dB
FREQUENCY (Hz)
1k 100 10 10k
-30
AV
-40
-50
-60
THD+N RATIO (dB)
-70
-80
-90
-100
MAX98089 toc03
10k 1k 100
MAX98089 toc06
���������������������������������������������������������������� Maxim Integrated Products 28
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
GAIN vs. FREQUENCY (MIC TO ADC)
10
0
-10
-20
-30
-40
-50
MCLK = 13MHz
-60
NORMALIZED GAIN (dB)
LRCLK = 8kHz
FREQ MODE
-70
V
= 1V
IN
AV
MICPRE_
P-P
= 0dB
FREQUENCY (Hz)
-80
-90
FFT, 0dBFS (MIC TO ADC)
20
0
-20
-40
-60
-80
-100
AMPLITUDE (dBFS)
-120
-140
-160
-180
0
FREQUENCY (kHz)
MODE = 1
MODE = 0
1k 100 10 10k
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
= 0dB
AV
MICPRE
3 2 1 4
MAX98089 toc07
CMRR (dB)
MAX98089 toc10
AMPLITUDE (dBFS)
COMMON-MODE REJECTION
RATIO vs. FREQUENCY (MIC TO ADC)
90
80
70
60
50
40
30
20
10
0
10
AV
AV
AV
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
VIN = 1V
P-P
CIN = 1µF
= 20dB
PRE
= 30dB
PRE
= 0dB
PRE
FREQUENCY (Hz)
FFT, -60dBFS (MIC TO ADC)
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
FREQUENCY (Hz)
1k 100 10k
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
= 0dB
AV
MICPRE_
3.5k 3k 2k 2.5k 1k 1.5k 500 0 4k
120
100
MAX98089 toc08
PSRR (dB)
MAX98089 toc11
AMPLITUDE (dBFS)
-100
-120
-140
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (MIC TO ADC)
RIPPLE ON SPKLVDD, SPKRVDD
80
60
40
20
0
RIPPLE ON AVDD, DVDD, HPVDD
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
AV
= 0dB
MICPRE
CIN = 1µF
V
= 200mV
RIPPLE
10 100k
P-P
10k 1k 100
FREQUENCY (Hz)
FFT, 0dBFS (MIC TO ADC)
20
0
-20
-40
-60
-80
0 20
FREQUENCY (kHz)
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
AV
MICPRE_
C
IN
15 10 5
MAX98089 toc09
MAX98089 toc12
= 0dB
= 1µF
���������������������������������������������������������������� Maxim Integrated Products 29
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
0
-20
-40
-60
-80
AMPLITUDE (dBFS)
-100
-120
-140
FFT, -60dBFS (MIC TO ADC)
0
-20
-40
-60
-80
AMPLITUDE (dBFS)
-100
-120
-140
FFT, -60dBFS (MIC TO ADC)
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
AV
MICPRE
15 10 5 0 20
FREQUENCY (kHz)
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
AV
MICPRE_
15 10 5 0 20
FREQUENCY (kHz)
= 0dB
= 0dB
MAX98089 toc13
MAX98089 toc15
20
0
-20
-40
-60
-80
AMPLITUDE (dBFS)
-100
-120
-140
0 20
MCLK = 12.288MHz
AV
FREQUENCY (kHz)
FFT, 0dBFS (MIC TO ADC)
20
FFT, 0dBFS (MIC TO ADC)
0
-20
-40
-60
-80
AMPLITUDE (dBFS)
-100
-120
-140
0 20
MCLK = 12.288MHz
LRCLK = 96kHz
AV
FREQUENCY (kHz)
LRCLK = 48kHz
NI MODE
= 0dB
MICPRE
C
= 1µF
IN
NI MODE
= 0dB
MICPRE
C
= 1µF
IN
MAX98089 toc14
18 16 2 4 6 10 12 8 14
MAX98089 toc16
18 16 2 4 6 10 12 8 14
���������������������������������������������������������������� Maxim Integrated Products 30
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
FFT, -60dBFS (MIC TO ADC)
0
-20
-40
-60
-80
AMPLITUDE (dBFS)
-100
-120
-140
MCLK = 12.288MHz
AV
FREQUENCY (kHz)
LRCLK = 96kHz
NI MODE
MICPRE_
15 10 5 0 20
MAX98089 toc17
= 0dB
SOFTWARE TURN-ON/OFF RESPONSE
(MIC TO ADC)
MAX98089 toc19
ADC ENABLE/DISABLE RESPONSE
(MIC TO ADC)
10ms/div
SCL
1V/div
MAX98089 toc18
SCL
2V/div
ADC
OUTPUT
0.5V/div
ADC
OUTPUT
0.5V/div
10ms/div
���������������������������������������������������������������� Maxim Integrated Products 31
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
SPKLVDD
MICPGA_
REC
= 0dB, AV
= 0dB, AV
Line to ADC
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (LINE TO ADC)
0
-10
-20
-30
-40
-50
-60
THD+N RATIO (dB)
-70
-80
-90
-100
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
0
-10
-20
-30
-40
-50
THD+N (dB)
-60
-70
-80
-90
-100
10 100k
0
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
= 1.4V
V
IN
AV
= -6dB
PGAIN_
= 1µF
C
IN
10k 1k 100 10 100k
P-P
MAX98089 toc20
THD+N RATIO (dB)
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
vs. FREQUENCY (LINE-IN TO ADC)
MCLK = 12.288MHz
LRCLK = 48kHz
VIN = 1V
EXTERNAL GAIN MODE
FREQUENCY (Hz)
R
EXT
10k 1k 100
= 56kI
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (LINE TO ADC)
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
= 1V
V
IN
P-P
= 0dB
PGAIN_
= 1µF
C
IN
10k 1k 100 10 100k
120
100
80
60
PSRR (dB)
40
20
0
RMS
AV
FREQUENCY (Hz)
MAX98089 toc23
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE TO ADC)
0
-10
MAX98089 toc21
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
10 100k
FREQUENCY (Hz)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (LINE TO ADC)
V
= 200mV
RIPPLE
RIPPLE ON SPKLVDD, SPKRVDD
RIPPLE ON AVDD, DVDD, HPVDD
FREQUENCY (Hz)
P-P
10k 1k 100 10 100k
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
V
= 0.1V
IN
AV
= +20dB
PGAIN_
10k 1k 100
MAX98089 toc24
P-P
MAX98089 toc22
���������������������������������������������������������������� Maxim Integrated Products 32
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= V
= 0dB, AV
SPK_
Line-In Pin Direct to ADC
SPKRVDD
DACATTN
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
C1N-C1P
= 0dB,
=
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE TO ADC PIN DIRECT)
0
-10
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
10 100k
MCLK = 12.288MHz
FREQUENCY (Hz)
LRCLK = 48kHz
NI MODE
= 1V
V
IN
AV
PGAIN_
CIN = 1µF
10k 1k 100
FFT, 0dBFS (SDINS1 TO SDINS2
DIGITAL LOOPBACK)
0
-20
-40
-60
-80
-100
AMPLITUDE (dBFS)
-120
-140
-160
-180
0 20
FREQUENCY (kHz)
MCLK = 12.288MHz
LRCLK = 48kHz
15 10 5
MAX98089 toc25
P-P
= 0dB
Digital Loopback
NI MODE
MAX98089 toc27
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (LINE TO ADC PIN DIRECT)
120
V
= 200mV
100
80
60
PSRR (dB)
40
20
0
RIPPLE ON SPKLVDD, SPKRVDD
RIPPLE ON AVDD, DVDD, HPVDD
RIPPLE
10k 1k 100 10 100k
FREQUENCY (Hz)
FFT, -60dBFS (SDINS1 TO SDINS2
DIGITAL LOOPBACK)
0
-20
-40
-60
-80
-100
AMPLITUDE (dBFS)
-120
-140
-160
-180
0 20
MCLK = 12.288MHz
LRCLK = 48kHz
15 10 5
FREQUENCY (kHz)
P-P
NI MODE
MAX98089 toc26
MAX98089 toc28
���������������������������������������������������������������� Maxim Integrated Products 33
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
Analog Loopback
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
(LINE TO ADC TO DAC TO HEADPHONE)
0
MCLK = 13MHz
-10
LRCLK = 44.1kHz
PLL MODE
-20
RHP = 32I
-30
C
= 10µF
IN
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
P
= 0.02W
OUT
P
= 0.01W
OUT
10 100k
FREQUENCY (Hz)
FFT, -60dBFS (LINE TO ADC TO DAC
TO HEADPHONE)
0
-20
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
FREQUENCY (kHz)
MCLK = 13MHz
LRCLK = 44.1kHz
10k 1k 100
PLL MODE
= 32I
R
HP
C
= 1µF
IN
15 10 5 0 20
MAX98089 toc29
MAX98089 toc32
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
(LINE TO ADC TO DAC TO HEADPHONE)
0
MCLK = 12.288MHz
-10
LRCLK = 48kHz
NI MODE
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
= 32I
R
HP
C
= 10µF
IN
P
= 0.02W
OUT
P
= 0.01W
OUT
100 10 100k
1k
FREQUENCY (Hz)
FFT, 0dBFS (LINE TO ADC TO DAC
TO HEADPHONE)
20
0
-20
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
0 20
MCLK = 12.288MHz
FREQUENCY (kHz)
10k
LRCLK = 48kHz
NI MODE
= 32I
R
HP
C
= 1µF
IN
15 10 5
MAX98089 toc30
MAX98089 toc33
(LINE TO ADC TO DAC TO HEADPHONE)
FFT, 0dBFS
20
0
-20
-40
-60
AMPLITUDE (dBV)
-80
-100
-120
FREQUENCY (kHz)
FFT, -60dBFS (LINE TO ADC TO DAC
TO HEADPHONE)
0
MCLK = 12.288MHz
-20
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
FREQUENCY (kHz)
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
RHP = 32I
C
= 1µF
IN
LRCLK = 48kHz
NI MODE
= 32I
R
HP
C
= 1µF
IN
15 10 5 0 20
MAX98089 toc31
18 16 2 4 6 10 12 8 14 0 20
MAX98089 toc34
���������������������������������������������������������������� Maxim Integrated Products 34
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
= V
SPKRVDD
= 0dB, AV
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
MICPGA_
= 0dB, AV
REC
SPKLVDD
DAC to Receiver
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
TOTAL HARMONIC DISTORTION
vs. OUTPUT POWER (DAC TO RECEIVER)
0
MCLK = 13MHz
-10
LRCLK = 8kHz
FREQ MODE
-20
R
= 32I
REC
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
= +8dB
AV
REC
f = 1000Hz
0 0.12
f = 3000Hz
OUTPUT POWER (W)
GAIN vs. FREQUENCY
(DAC TO RECEIVER)
5
MCLK = 13MHz
4
LRCLK = 8kHz
3
FREQ MODE
= 32I
R
REC
2
1
0
-1
-2
NORMALIZED GAIN (dB)
-3
-4
-5
FREQUENCY (Hz)
f = 100Hz
0.10 0.08 0.06 0.04 0.02
0
-10
MAX98089 toc35
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
250
200
MAX98089 toc38
150
100
POWER CONSUMPTION (mW)
50
10k 1k 100 10
0
TOTAL HARMONIC DISTORTION
vs. FREQUENCY (DAC TO RECEIVER)
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
R
= 32I
REC
= +8dB
AV
REC
P
= 0.025W
OUT
P
= 0.05W
OUT
10 10k
FREQUENCY (Hz)
1k 100
POWER CONSUMPTION vs. OUTPUT
POWER (DAC TO RECEIVER)
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
AV
= +8dB
REC
R
= 32I
REC
0 140
OUTPUT POWER PER CHANNEL (mW)
120 80 100 60 40 20
OUTPUT POWER vs. SUPPLY VOLTAGE
(DAC TO RECEIVER)
200
180
MAX98089 toc36
160
140
120
100
OUTPUT POWER PER CHANNEL (mW)
80
60
2.5 5.5
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (DAC TO RECEIVER)
120
V
= 200mV
RIPPLE
100
MAX98089 toc39
80
60
PSRR (dB)
40
20
0
10 100k
RIPPLE ON SPKLVDD, SPKRVDD
RIPPLE ON AVDD, DVDD, HPVDD
THD+N = 10%
MCLK = 13MHz
THD+N = 1%
SUPPLY VOLTAGE (V)
P-P
FREQUENCY (Hz)
LRCLK = 8kHz
FREQ MODE
R
= 32I
REC
AV
= +8dB
REC
5.0 4.5 4.0 3.5 3.0
10k 1k 100
MAX98089 toc37
MAX98089 toc40
���������������������������������������������������������������� Maxim Integrated Products 35
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
SOFTWARE TURN-ON/OFF RESPONSE
(DAC TO RECEIVER, VSEN = 0)
10ms/div
FFT, 0dBFS (DAC TO RECEIVER)
20
0
-20
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
FREQUENCY (kHz)
MAX98089 toc41
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
= 32I
R
REC
15 10 5 0 20
SCL
2V/div
RECEIVER
OUTPUT
0.5V/div
MAX98089 toc43
SOFTWARE TURN-ON/OFF RESPONSE
(DAC TO RECEIVER, VSEN = 1)
10ms/div
FFT, -60dBFS (DAC TO RECEIVER)
0
MCLK = 13MHz
-20
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
FREQUENCY (kHz)
MAX98089 toc42
LRCLK = 8kHz
FREQ MODE
= 32I
R
REC
15 10 5 0 20
SCL
1V/div
RECEIVER
OUTPUT
1V/div
MAX98089 toc44
���������������������������������������������������������������� Maxim Integrated Products 36
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
= V
SPKRVDD
= 0dB, AV
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
MICPGA_
= 0dB, AV
REC
SPKLVDD
Line to Receiver
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
(LINE TO RECEIVER)
0
-10
-20
-30
-40
THD+N RATIO (dB)
-50
-60
-70
f = 100Hz
0 0.10
f = 1000Hz
OUTPUT POWER (W)
AV
f = 6000Hz
GAIN vs. FREQUENCY
(LINE TO RECEIVER)
5
R
= 32I
REC
4
= 1µF
C
IN
3
2
1
0
-1
-2
NORMALIZED GAIN (dB)
-3
-4
-5
10 100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
(LINE TO RECEIVER)
0
R
= 32I
R
= 32I
REC
= +8dB
REC
C
IN
0.08 0.06 0.04 0.02
= 1µF
MAX98089 toc45
REC
-10
AV
= +8dB
REC
= 1µF
C
IN
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
10 100k
P
= 0.025W
OUT
P
= 0.05W
OUT
FREQUENCY (Hz)
MAX98089 toc46
10k 1k 100
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (LINE TO RECEIVER)
120
V
= 200mV
RIPPLE
MAX98089 toc47
10k 1k 100
100
80
60
PSRR (dB)
40
20
0
10 100k
P-P
MAX98089 toc48
RIPPLE ON SPKLVDD, SPKRVDD
RIPPLE ON AVDD, DVDD, HPVDD
10k 1k 100
FREQUENCY (Hz)
���������������������������������������������������������������� Maxim Integrated Products 37
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
DAC-to-Line Output
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
INBAND OUTPUT SPECTRUM,
20
0
-20
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
0 20
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT LEVEL
(LINE-IN TO LINE-OUT)
0
R
= 10kI
LOAD
-10
-20
-30
-40
-50
THD+N (dB)
-60
-70
-80
-90
0 1.4
f = 6kHz
f = 1kHz
OUTPUT LEVEL (V
f = 100Hz
RMS
0dBFS (DAC TO LINE)
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
R
LOAD
FREQUENCY (kHz)
MAX98089 toc51
1.2 1.0 0.6 0.8 0.4 0.2
)
= 10kI
MAX98089 toc49
15 10 5
-20
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
Line-to-Line Output
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE IN TO LINE OUT)
0
= 10kI
R
LINE
-10
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
V
= 0.8V
OUT
RMS
V
= 0.2V
OUT
RMS
10 100k
FREQUENCY (Hz)
10k 1k 100
INBAND OUTPUT SPECTRUM,
-60dBFS (DAC TO LINE)
0
FREQUENCY (kHz)
0
-10
MAX98089 toc52
-20
-30
-40
-50
THD+N (dB)
-60
-70
-80
-90
-100
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
= 10kI
R
LINE
16 2 4 6 10 12 8 14 0 20
MAX98089 toc50
18
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE-IN TO LINE-OUT)
VIN = 1V
RMS
R
= 10kI
LINE
EXTERNAL GAIN MODE
R
= 56kI
EXT
10 100k
FREQUENCY (Hz)
10k 1k 100
MAX98089 toc53
���������������������������������������������������������������� Maxim Integrated Products 38
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
= V
SPKRVDD
= 0dB, AV
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
MICPGA_
= 0dB, AV
REC
SPKLVDD
DAC to Speaker
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
0
V
= 4.2V
SPK_VDD
-10
MCLK = 12.288MHz
LRCLK = 48kHz
-20
NI MODE
Z
= 8I + 68µH
SPK_
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
= +8dB
AV
SPK_
f = 100Hz
0 1.4
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
0
V
= 3.0V
SPK_VDD
MCLK = 12.288MHz
-10
LRCLK = 48kHz
-20
NI MODE
Z
= 8I + 33µH
SPK
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
= +8dB
AV
SPK
f = 6000Hz
f = 1000Hz
f = 100Hz
0 0.8
OUTPUT POWER (W)
f = 6000Hz
f = 1000Hz
OUTPUT POWER (W)
MAX98089 toc56
0.7 0.6 0.1 0.2 0.3 0.4 0.5
-10
MAX98089 toc54
1.2 1.0 0.6 0.8 0.4 0.2
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
0
V
= 5.0V
SPK_VDD
-10
MCLK = 12.288MHz
LRCLK = 48kHz
-20
NI MODE
Z
= 4I + 33µH
SPK_
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
0 3.5
= +8dB
AV
SPK_VOL
TQFN PACKAGE
f = 100Hz
f = 6000Hz
f = 1000Hz
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
0
V
= 3.7V
SPK_VDD
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
Z
= 8I + 68µH
SP_
= +8dB
AV
SPK_
f = 6000Hz
f = 1000Hz
f = 100Hz
0 1.0
OUTPUT POWER (W)
0.8 0.6 0.4 0.2
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
0
V
= 5.0V
SPK_VDD
-10
MCLK = 12.288MHz
MAX98089 toc57a
3.0 2.5 1.5 2.0 1.0 0.5
LRCLK = 48kHz
-20
NI MODE
Z
= 4I + 33µH
SPK_
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
0 3.5
= +8dB
AV
SPK_VOL
WLP PACKAGE
f = 100Hz
f = 6000Hz
f = 1000Hz
OUTPUT POWER (W)
MAX98089 toc55
MAX98089 toc57b
3.0 2.5 1.5 2.0 1.0 0.5
���������������������������������������������������������������� Maxim Integrated Products 39
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
0
V
= 4.2V
SPK_VDD
-10
MCLK = 12.288MHz
LRCLK = 48kHz
-20
NI MODE
-30
Z
= 4I + 33µH
SPK_
= +8dB
AV
SPK_VOL
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
0
f = 100Hz
f = 6000Hz
f = 1000Hz
1.5 2.0 1.0 0.5
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO SPEAKER)
0
V
= 4.2V
SPK_VDD
-10
MCLK = 12.288MHz
LRCLK = 48kHz
-20
NI MODE
Z
= 8I + 68µH
SP_
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
= +8dB
AV
SPK_
P
= 0.25W
OUT
P
= 0.55W
OUT
100 100k
FREQUENCY (Hz)
10k 1k
MAX98089 toc58
2.5
MAX98089 toc61
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
0
V
= 3.7V
SPK_VDD
-10
MCLK = 12.288MHz
LRCLK = 48kHz
-20
NI MODE
-30
Z
= 4I + 33µH
SPK_
= +8dB
AV
SPK_VOL
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
f = 100Hz
f = 6000Hz
f = 1000Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO SPEAKER)
0
V
= 3.7V
SPK_VDD
-10
MCLK = 12.288MHz
LRCLK = 48kHz
-20
NI MODE
Z
= 8I + 68µH
SPK_
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
= +8dB
AV
SPK_
P
= 0.55W
OUT
P
= 0.25W
OUT
100 100k
FREQUENCY (Hz)
10k 1k
1.8 1.6 1.2 1.4 0.4 0.6 0.8 1.0 0.2 0 2.0
MAX98089 toc59
THD+N RATIO (dB)
MAX98089 toc62
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
0
V
= 3.0V
SPK_VDD
-10
MCLK = 12.288MHz
LRCLK = 48kHz
-20
NI MODE
Z
= 4I + 33µH
SP_
-30
-40
-50
-60
-70
-80
-90
AV
SPK_
f = 100Hz
= +8dB
f = 6000Hz
f = 1000Hz
0.8 0.2 0.4 0.6 0 1.2
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO SPEAKER)
0
V
= 4.2V
SPK_VDD
MCLK = 12.288MHz
-10
LRCLK = 48kHz
-20
NI MODE
Z
= 4I + 33µH
SPK_
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
= +8dB
AV
SPK_
P
= 0.55W
OUT
P
= 0.25W
OUT
100 100k
FREQUENCY (Hz)
10k 1k
MAX98089 toc60
1.0
MAX98089 toc63
���������������������������������������������������������������� Maxim Integrated Products 40
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO SPEAKER)
0
MCLK = 12.288MHz
-10
LRCLK = 48kHz
NI MODE
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
Z
AV
SPK_
SPK_
= 4I + 33µH
= +8dB
OUTPUT POWER vs. SUPPLY VOLTAGE
(DAC TO SPEAKER)
2500
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
2000
1500
1000
500
OUTPUT POWER PER CHANNEL (mW)
= 8I + 68µH
Z
SPK_
AV
= +8dB
SPK_
WLP PACKAGE
THD+N = 10%
THD+N = 1%
0
2.5 5.5
SUPPLY VOLTAGE (V)
P
= 0.25W
OUT
P
= 0.55W
OUT
FREQUENCY (Hz)
MAX98089 toc65b
5.0 4.5 4.0 3.5 3.0
MAX98089 toc64
10k 1k 100 10 100k
OUTPUT POWER vs. SUPPLY VOLTAGE
(DAC TO SPEAKER)
4000
MCLK = 12.288MHz
LRCLK = 48kHz
3500
NI MODE
3000
2500
2000
1500
1000
OUTPUT POWER PER CHANNEL (mW)
500
= 4I + 33µH
Z
SPK_
AV
= +8dB
SPK_
TQFN PACKAGE
0
2.5 5.5
THD+N = 10%
THD+N = 1%
SUPPLY VOLTAGE (V)
OUTPUT POWER vs. SUPPLY VOLTAGE
(DAC TO SPEAKER)
2500
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
2000
1500
1000
500
OUTPUT POWER PER CHANNEL (mW)
= 8I + 68µH
Z
SPK_
AV
= +8dB
SPK_
TQFN PACKAGE
THD+N = 10%
THD+N = 1%
0
2.5 5.5
SUPPLY VOLTAGE (V)
OUTPUT POWER vs. SUPPLY VOLTAGE
4000
MCLK = 12.288MHz
LRCLK = 48kHz
3500
MAX98089 toc66
5.0 4.5 3.0 3.5 4.0
NI MODE
3000
2500
2000
1500
1000
OUTPUT POWER PER CHANNEL (mW)
500
= 4I + 33µH
Z
SPK_
AV
= +8dB
SPK_
WLP PACKAGE
0
2.5 5.5
MAX98089 toc65a
5.0 4.5 4.0 3.5 3.0
(DAC TO SPEAKER)
THD+N = 10%
THD+N = 1%
SUPPLY VOLTAGE (V)
MAX98089 toc67
5.0 4.5 3.0 3.5 4.0
���������������������������������������������������������������� Maxim Integrated Products 41
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
100
Z
SPK
90
80
75
60
50
40
EFFICIENCY (%)
30
20
10
0
GAIN vs. FREQUENCY
(DAC TO SPEAKER)
5
MCLK = 12.288MHz
4
LRCLK = 48kHz
3
NI MODE
Z
= 8I + 68µH
SPK_
2
1
0
-1
-2
NORMALIZED GAIN (dB)
-3
-4
-5
FREQUENCY (Hz)
EFFICIENCY vs. OUTPUT
POWER (DAC TO SPEAKER)
= 8I + 68µH
Z
= 4I + 33µH
SPK
V
= 4.2V
SPK_VDD
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
AV
= +8dB
SKP_
1600 1200 400 800 0 2000
OUTPUT POWER PER CHANNEL (mW)
EFFICIENCY vs. OUTPUT
POWER (DAC TO SPEAKER)
100
Z
= 8I + 68µH
SPK
90
MAX98089 toc68
10k 1k 100 10 100k
EFFICIENCY vs. OUTPUT POWER
(DAC TO SPEAKER)
100
Z
= 8I + 68uH
SPK
90
MAX98089 toc70
80
70
Z
60
50
40
EFFICIENCY (%)
30
20
10
0
1800 1400 600 1000 200
OUTPUT POWER PER CHANNEL (mW)
= 4I + 33uH
SPK
80
70
60
50
40
EFFICIENCY (%)
30
20
10
0
0 2.0
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
AV
= +8dB
SKP_
1400 1200 800 1000 400 600 200 0 1600
Z
= 4I + 33µH
SPK
V
= 4.2V
SPK_VDD
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
AV
= +8dB
SKP_
1.5 1.0 0.5
OUTPUT POWER PER CHANNEL (W)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (DAC TO SPEAKER)
120
V
= 200mV
RIPPLE
100
MAX98089 toc71
80
60
PSRR (dB)
40
20
0
MAX98089 toc69
P-P
RIPPLE ON SPKLVDD,
SPKRVDD
RIPPLE ON AVDD,
DVDD, HPVDD
1k
FREQUENCY (Hz)
MAX98089 toc72
100k
10k 100 10
���������������������������������������������������������������� Maxim Integrated Products 42
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
vs. FREQUENCY (DAC TO SPEAKER)
CROSSTALK
0
MCLK = 12.288MHz
LRCLK = 48kHz
-20
NI MODE
Z
= 8I + 68µH
SPK_
-40
-60
CROSSTALK (dB)
-80
-100
-120
LEFT TO RIGHT
RIGHT TO LEFT
1k
FREQUENCY (Hz)
FFT, -60dBFS (DAC TO SPEAKER)
20
MCLK = 12.2888MHz
0
LRCLK = 48kHz
NI MODE
-20
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
= 8I + 68µH
Z
SPK_
0 20
FREQUENCY (kHz)
SOFTWARE TURN-ON/OFF RESPONSE
(DAC TO SPEAKER, VSEN = 0)
MAX98089 toc73
10k 100 10
100k
10ms/div
MAX98089 toc74
SCL
1V/div
SPEAKER
OUTPUT
1V/div
FFT, -60dBFS (DAC TO SPEAKER)
0
MCLK = 13MHz
-20
MAX98089 toc76
15 10 5
LRCLK = 44.1kHz
PLL MODE
Z
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
= 8I + 68µH
SPK_
0 20
FREQUENCY (kHz)
MAX98089 toc77
15 10 5
SOFTWARE TURN-ON/OFF RESPONSE
(DAC TO SPEAKER, VSEN = 1)
10ms/div
WIDEBAND FFT (DAC TO SPEAKER)
0
-20
-40
-60
AMPLITUDE (dBm)
-80
-100
1 100
FREQUENCY (MHz)
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
Z
SPK_
10
MAX98089 toc75
= 8I + 68µH
SCL
1V/div
SPEAKER
OUTPUT
1V/div
MAX98089 toc78
���������������������������������������������������������������� Maxim Integrated Products 43
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
= V
SPKRVDD
= 0dB, AV
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
MICPGA_
= 0dB, AV
REC
SPKLVDD
Line to Speaker
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (LINE TO SPEAKER)
0
Z
= 8I + 68µH
SPK
= +8dB
AV
-10
SPK_
C
= 1µF
IN
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
0 1.0
OUTPUT POWER (W)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (LINE TO SPEAKER)
90
80
70
60
RIPPLE ON AVDD,
50
DVDD, HPVDD
40
PSRR (dB)
30
20
10
0
10 100k
0.8 0.6 0.2 0.4
RIPPLE ON SPKLVDD,
INPUTS AC GROUNDED
V
RIPPLE
FREQUENCY (Hz)
MAX98089 toc79
SPKRVDD
= 200mV
10k 1k 100
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE TO SPEAKER)
0
Z
= 8I + 68µH
SPK_
-10
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
P-P
= +8dB
AV
SPK_
C
= 1µF
IN
P
= 0.5W
OUT
P
= 0.25W
OUT
10 100k
FREQUENCY (Hz)
MAX98089 toc82
10k 1k 100
CROSSTALK (dB)
-100
-120
0
-20
-40
-60
-80
5
Z
= 8I + 68µH
SPK_
4
= 1µF
C
IN
3
MAX98089 toc80
2
1
0
-1
-2
NORMALIZED GAIN (dB)
-3
-4
-5
10 100k
CROSSTALK vs. FREQUENCY
(LINE TO SPEAKER)
ZFN = 8I + 68µH
CIN = 1µF
RIGHT TO LEFT
1k
FREQUENCY (Hz)
GAIN vs. FREQUENCY
(LINE TO SPEAKER)
FREQUENCY (Hz)
MAX98089 toc83
LEFT TO RIGHT
100k
10k 100 10
MAX98089 toc81
10k 1k 100
���������������������������������������������������������������� Maxim Integrated Products 44
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
DAC to Headphone
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO HEADPHONE)
0
MCLK = 13MHz
-10
LRCLK = 8kHz
FREQ MODE
-20
= 32I
R
HP
AV
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
= +3dB
HP_
TQFN PACKAGE
f = 3000Hz
f = 1000Hz
0 0.010 0.020 0.030 0.040
0.005 0.015 0.025 0.035 0.045
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO HEADPHONE)
0
MCLK = 13MHz
-10
LRCLK = 44.1kHz
PLL MODE
-20
= 32I
R
HP
AV
= +3dB
HP_
-30
TQFN PACKAGE
-40
-50
f = 1000Hz
THD+N RATIO (dB)
-60
-70
-80
-90
0 0.010 0.020 0.030 0.040
0.005 0.015 0.025 0.035 0.045
f = 6000Hz
f = 100Hz
OUTPUT POWER (W)
f = 100Hz
MAX98089 toc86
THD+N RATIO (dB)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO HEADPHONE)
0
MCLK = 13MHz
-10
LRCLK = 8kHz
MAX98089 toc84
FREQ MODE
-20
R
AV
-30
WLP PACKAGE
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO HEADPHONE)
0
MCLK = 13MHz
-10
LRCLK = 44.1kHz
PLL MODE
-20
R
= 32I
HP
AV
-30
-40
-50
-60
-70
-80
-90
= +3dB
HP_
WLP PACKAGE
f = 6000Hz
f = 1000Hz
f = 100Hz
0 0.05
OUTPUT POWER (W)
0.04 0.03 0.02 0.01
= 32I
HP
= +3dB
HP_
f = 1000Hz
f = 3000Hz
f = 100Hz
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS NOISE
0
-10
MAX98089 toc87
-20
-30
-40
-50
-60
THD+N RATIO (dB)
-70
-80
-90
-100
MAX98089 toc85
0.03 0.02 0.01 0 0.05
0.04
vs. OUTPUT POWER (DAC TO HEADPHONE)
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
= 32I
R
HP
AV
= +3dB
HP_
TQFN PACKAGE
f = 6000Hz
f = 1000Hz
f = 100Hz
0
0.010 0.020 0.030 0.040 0.050
0.015 0.025 0.005
OUTPUT POWER (W)
0.045 0.035
MAX98089 toc88
���������������������������������������������������������������� Maxim Integrated Products 45
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO HEADPHONE)
0
MCLK = 12.288MHz
-10
LRCLK = 48kHz
NI MODE
-20
-30
-40
-50
-60
THD+N RATIO (dB)
-70
-80
-90
-100
= 32I
R
HP
AV
= +3dB
HP_
WLP PACKAGE
f = 6000Hz
f = 1000Hz
f = 100Hz
0.010 0.020 0.030 0.040 0.050
0
0.015 0.025 0.005
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO HEADPHONE)
0
MCLK = 12.288MHz
-10
LRCLK = 48kHz
NI MODE
-20
= 16I
R
HP
-30
AV
= +3dB
HP_
TQFN PACKAGE
-40
-50
-60
THD+N RATIO (dB)
f = 100Hz
-70
-80
-90
-100
0 0.07
OUTPUT POWER (W)
f = 6000Hz
f = 1000Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO HEADPHONE)
0
MCLK = 12.288MHz
-10
LRCLK = 96kHz
MAX98089 toc89
THD+N RATIO (dB)
-100
0.045 0.035
-30
-40
-50
-60
-70
-80
-90
= 32I
R
HP
AV
= +3dB
HP_
TQFN PACKAGE
f = 6000Hz
f = 1000Hz
f = 100Hz
0.010 0.020 0.030 0.040 0.050
0
0.015 0.025 0.005
OUTPUT POWER (W)
NI MODE
-20
MAX98089 toc90
0.045 0.035
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO HEADPHONE)
0
MCLK = 12.288MHz
-10
LRCLK = 48kHz
MAX98089 toc92
0.06 0.05 0.03 0.04 0.02 0.01
NI MODE
-20
= 16I
R
HP
-30
AV
= +3dB
HP_
WLP PACKAGE
-40
-50
-60
THD+N RATIO (dB)
f = 1000Hz
-70
-80
-90
-100
0 0.07
OUTPUT POWER (W)
f = 6000Hz
f = 100Hz
MAX98089 toc93
0.06 0.05 0.03 0.04 0.02 0.01
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO HEADPHONE)
0
MCLK = 12.288MHz
-10
LRCLK = 96kHz
NI MODE
-20
-30
-40
-50
-60
THD+N RATIO (dB)
-70
-80
-90
-100
= 32I
R
HP
AV
= +3dB
HP_
WLP PACKAGE
f = 6000Hz
f = 1000Hz
f = 100Hz
0.010 0.020 0.030 0.040 0.050
0
0.015 0.025 0.005
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO HEADPHONE)
0
MCLK = 12.288MHz
-10
LRCLK = 48kHz
256F
MODE
S
-20
LOW-POWER MODE
RHP = 16I ,
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
= +3dB
AV
HP_
TQFN PACKAGE
f = 1000Hz
0 0.07
OUTPUT POWER (W)
f = 6000Hz
f = 100Hz
MAX98089 toc91
0.045 0.035
MAX98089 toc94
0.06 0.05 0.03 0.04 0.02 0.01
���������������������������������������������������������������� Maxim Integrated Products 46
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO HEADPHONE)
0
MCLK = 12.288MHz
-10
LRCLK = 48kHz
256F
MODE
S
-20
LOW POWER MODE
RHP = 16I
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
= +3dB
AV
HP_
WLP PACKAGE
f = 6000Hz
f = 1000Hz
0 0.07
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO HEADPHONE)
0
MCLK = 13MHz
-10
LRCLK = 44.1kHz
PLL MODE
-20
= 32I
R
HP
AV
= +3dB
HP_
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
P
= 0.01W
OUT
P
= 0.02W
OUT
10 100k
FREQUENCY (Hz)
10k 1k 100
f = 100Hz
MAX98089 toc97
-10
MAX98089 toc95
0.06 0.05 0.03 0.04 0.02 0.01
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO HEADPHONE)
0
MCLK = 12.288MHz
-10
LRCLK = 48kHz
NI MODE
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
= 32I
R
HP
AV
= +3dB
HP_
P
= 0.02W
OUT
P
OUT
10 100k
FREQUENCY (Hz)
10k 1k 100
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO HEADPHONE)
0
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
= 32I
R
HP
AV
= +3dB
HP_
P
= 0.01W
OUT
P
= 0.02W
OUT
10 10k
FREQUENCY (Hz)
1k 100
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO HEADPHONE)
0
MCLK = 12.288MHz
-10
MAX98089 toc98
= 0.01W
LRCLK = 96kHz
NI MODE
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
= 32I
R
HP
AV
= +3dB
HP_
= 0.02W
FREQUENCY (Hz)
P
P
OUT
10 100k
OUT
MAX98089 toc96
MAX98089 toc99
= 0.02W
10k 1k 100
���������������������������������������������������������������� Maxim Integrated Products 47
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO HEADPHONE)
0
MCLK = 12.288MHz
-10
LRCLK = 48kHz
NI MODE
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
= 16I ,
R
HP
AV
= +3dB
HP_
P
= 0.01W
P
= 0.02W
OUT
10 100k
OUT
10k 1k 100
FREQUENCY (Hz)
NORMALIZED GAIN (dB)
TOTAL HARMONIC DISTORTION PLUS NOISE
0
-10
MAX98089 toc100
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
GAIN vs. FREQUENCY
(DAC TO HEADPHONE)
10
0
-10
-20
-30
-40
-50
MCLK = 13MHz
-60
LRCLK = 8kHz
FREQ MODE
-70
R
= 32I
HP
-80
10 100k
FREQUENCY (Hz)
MODE = 1
MODE = 0
10k 1k 100
vs. FREQUENCY (DAC TO HEADPHONE)
MCLK = 12.288MHz
LRCLK = 48kHz
LOW-POWER MODE
= 16I ,
R
HP
AV
= +3dB
HP_
P
= 0.01W
OUT
P
= 0.02W
OUT
10 100k
FREQUENCY (Hz)
MAX98089 toc102
10k 1k 100
MAX98089 toc101
���������������������������������������������������������������� Maxim Integrated Products 48
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
POWER CONSUMPTION vs. OUTPUT
POWER (DAC TO HEADPHONE)
120
MCLK = 12.288MHz
LRCLK = 48kHz
100
NI MODE
= +3dB
AV
HP_
80
60
40
POWER CONSUMPTION (mW)
20
0
OUTPUT POWER PER CHANNEL (mW)
RPH = 16I
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (DAC TO HEADPHONE)
120
100
80
60
PSRR (dB)
40
20
V
0
10 100k
RPH = 32I
10 1 0.1 100
RIPPLE ON AVDD,
PVDD, DVDD
= 200mV
RIPPLE
MAX98089 toc103
RIPPLE ON SPKLVDD,
SPKRVDD
P-P
FREQUENCY (Hz)
CURRENT CONSUMPTION vs. OUTPUT
POWER (DAC TO HEADPHONE)
120
MCLK = 12.288MHz
LRCLK = 48kHz
100
LOW-POWER MODE
= +3dB
AV
HP_
80
60
40
CURRENT CONSUMPTION (mA)
20
0
OUTPUT POWER PER CHANNEL (mW)
MAX98089 toc106
10k 1k 100
RPH = 16I
RPH = 32I
10 1 0.1 100
CROSSTALK (dB)
0
-20
-40
-60
-80
-100
-120
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (DAC TO HEADPHONE)
120
100
MAX98089 toc104
80
60
PSRR (dB)
40
20
V
RIPPLE
0
10 100k
CROSSTALK vs. FREQUENCY
(DAC TO HEADPHONE)
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
= 32I
R
HP
WLP RIGHT TO LEFT
WLP LEFT TO RIGHT
TQFN LEFT TO RIGHT
TQFN RIGHT TO LEFT
1k
FREQUENCY (kHz)
RIPPLE ON SPKLVDD,
RIPPLE ON AVDD,
DVDD, HPVDD
= 200mV
P-P
FREQUENCY (Hz)
10k 100 10
SPKRVDD
MAX98089 toc105
10k 1k 100
MAX98089 toc107
100k
���������������������������������������������������������������� Maxim Integrated Products 49
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
SOFTWARE TURN-ON/OFF RESPONSE
(DAC TO HEADPHONE, VSEN = 0)
10ms/div
FFT, 0dBFS (DAC TO HEADPHONE)
20
0
-20
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
0 20
FREQUENCY (kHz)
MAX98089 toc108
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
= 32I
R
HP
18 16 2 4 6 10 12 8 14
SCL
1V/div
HEADPHONE
OUTPUT
1V/div
MAX98089 toc110
SOFTWARE TURN-ON/OFF RESPONSE
(DAC TO HEADPHONE, VSEN = 1)
10ms/div
FFT, -60dBFS (DAC TO HEADPHONE)
20
0
-20
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
0 20
FREQUENCY (kHz)
MAX98089 toc109
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
= 32I
R
HP
18 16 2 4 6 10 12 8 14
SCL
1V/div
HEADPHONE
OUTPUT
1V/div
MAX98089 toc111
���������������������������������������������������������������� Maxim Integrated Products 50
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
INBAND FREQUENCY SPECTRUM,
0dBFS (DAC TO HEADPHONE)
20
0
-20
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
0 20
FFT, 0dBFS (DAC TO HEADPHONE)
20
0
-20
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
0 20
FREQUENCY (kHz)
MCLK = 12.288MHz
FREQUENCY (kHz)
LRCLK = 48kHz
NI MODE
= 32I
R
HP
18 16 2 4 6 10 12 8 14
MCLK = 13MHz
LRCLK = 44.1kHz
15 10 5
-20
MAX98089 toc114
-40
-60
-80
-100
AMPLITUDE (dBV)
-120
-140
-160
PLL MODE
= 32I
R
HP
MAX98089 toc112
-20
-40
-60
-80
-100
AMPLITUDE (dBV)
-120
-140
-160
FFT, -60dBFS (DAC TO HEADPHONE)
0
0 20
MCLK = 12.288MHz
FREQUENCY (kHz)
LRCLK = 48kHz
R
HP
15 10 5
FFT, -60dBFS (DAC TO HEADPHONE)
0
0 20
FREQUENCY (kHz)
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
= 32I
R
HP
15 10 5
FFT, 0dBFS (DAC TO HEADPHONE)
20
0
NI MODE
= 32I
MAX98089 toc115
-20
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
0 20
MAX98089 toc113
MCLK = 12.288MHz
FREQUENCY (kHz)
LRCLK = 96kHz
NI MODE
= 32I
R
HP
18 16 2 4 6 10 12 8 14
MAX98089 toc116
���������������������������������������������������������������� Maxim Integrated Products 51
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
FFT, -60dBFS (DAC TO HEADPHONE)
0
-20
-40
-60
-80
-100
AMPLITUDE (dBV)
-120
-140
-160
0 20
MCLK = 12.288MHz
FREQUENCY (kHz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (LINE TO HEADPHONE)
0
RHP = 32I
-10
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
= +3dB
AV
HP_
f = 100Hz
0.010 0.020 0.030 0.040 0.050
0
LRCLK = 96kHz
NI MODE
= 32I
R
HP
15 10 5
0.015 0.025 0.005
OUTPUT POWER (W)
MAX98089 toc117
f = 6000Hz
f = 1000Hz
FFT, 0dBFS (DAC TO HEADPHONE)
20
0
-20
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
0 20
MCLK = 12.288MHz
LOW-POWER MODE
FREQUENCY (kHz)
Line to Headphone
MAX98089 toc120
0.045 0.035
FFT, -60dBFS (DAC TO HEADPHONE)
0
LRCLK = 48kHz
= 32I
R
HP
18 16 2 4 6 10 12 8 14
-20
MAX98089 toc118
-40
-60
-80
AMPLITUDE (dBV)
-100
-120
-140
0 20
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE TO HEADPHONE)
0
RHP = 32I
-10
-20
-30
-40
-50
THD+N RATIO (dB)
-60
-70
-80
-90
= +3dB
AV
HP_
C
= 1µF
IN
P
= 0.02W
OUT
P
= 0.01W
OUT
10 100k
FREQUENCY (Hz)
10k 1k 100
MCLK = 12.288MHz
LOW POWER MODE
FREQUENCY (kHz)
MAX98089 toc121
LRCLK = 48kHz
MAX98089 toc119
RHP = 32I
15 10 5
���������������������������������������������������������������� Maxim Integrated Products 52
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
GAIN vs. FREQUENCY
(LINE TO HEADPHONE)
5
RHP = 32I
4
= 1µF
C
IN
3
2
1
0
-1
-2
NORMALIZED GAIN (dB)
-3
-4
-5
10 100k
FREQUENCY (Hz)
CROSSTALK (dB)
MAX98089 toc122
10k 1k 100
CROSSTALK vs. FREQUENCY
(LINE TO HEADPHONE)
0
RHP = 32I
= 1µF
C
IN
-20
-40
-60
-80
-100
-120
WLP RIGHT TO LEFT
WLP LEFT TO RIGHT
TQFN RIGHT TO LEFT TQFN LEFT TO RIGHT
1k
FREQUENCY (Hz)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (LINE TO HEADPHONE)
120
V
= 200mV
100
PSRR (dB)
10k 100 10
RIPPLE
80
60
40
20
0
MAX98089 toc124
100k
P-P
RIPPLE ON SPKLVDD,
SPKRVDD
FREQUENCY (Hz)
RIPPLE ON AVDD,
DVDD, HPVDD
10k 100 10
1k
MAX98089 toc123
100k
���������������������������������������������������������������� Maxim Integrated Products 53
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
SPK_P and SPK_N. Receiver load (R
to HPGND. Line out (R
1F F, C
AV
ADCGAIN
HPVDD
= C
HPVSS
= 0dB, AV
) connected from LOUTL or LOUTR to SPKLGND, C
LOUT
= 1F F. AV
= 0dB, AV
PGAIN_
= +25N C, unless otherwise noted.)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
= V
) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
REC
MICPRE_
HP_
= 1.8V, V
DVDDS2
= +20dB, AV
= 0dB, AV
MICPGA_
= 0dB, AV
REC
SPKLVDD
= 0dB, AV
Speaker Bypass Switch
= V
SPKRVDD
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
SPK_
= 3.7V. Speaker loads (Z
= 2.2F F, C
REF
DACATTN
= 0dB, AV
MICBIAS
DACGAIN
) connected between
SPK
= C
REG
= 1F F, C
= 0dB, AV
ADCLVL
C1N-C1P
= 0dB,
=
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
(SPEAKER BYPASS SWITCH)
0
RECEIVER AMPLIFIER
-10
DRIVING LOUDSPEAKER
Z
= 8I + 68µH
SPK
-20
-30
-40
THD+N (dB)
f = 1000kHz
-50
-60
-70
-80
0 0.25
f = 100Hz
OUTPUT POWER (W)
MAX98089 toc126
f = 6000Hz
0.20 0.15 0.05 0.10
OFF-ISOLATION vs. FREQUENCY
(SPEAKER BYPASS SWITCH)
0
SPEAKER AMP DRIVING LOUDSPEAKER
SPEAKER BYPASS SWITCH OPEN
-20
MEASURED AT RXIN_
-40
ON-RESISTANCE vs. VCOM
(SPEAKER BYPASS SWITCH)
4.0
ISW = 20mA
3.5
3.0
2.5
(I )
2.0
V
SPK_VDD
ON
R
1.5
1.0
0.5
0
0 6
MAX98089 toc128
= 3.7V
V
V
SPK_VDD
SPK_VDD
V
COM
V
= 4.2V
(V)
SPK_VDD
= 3.0V
MAX98089 toc127
= 5.0V
5 4 1 2 3
-60
50I LOAD ON RXIN_
-80
OFF-ISOLATION (dB)
RECEIVER AMP DRIVING RXIN_
-100
-120
10k 1k 100 10 100k
FREQUENCY (Hz)
���������������������������������������������������������������� Maxim Integrated Products 54
TOP VIEW
(BUMP SIDE DOWN)
1 2 3 4 5 6 7 8 9
A
SPKRN
SPKRGND
Low-Power, Stereo Audio Codec
SPKLVDD SPKLP
MAX98089
with FlexSound Technology
Pin Configuration
RECP/
SPKLN
LOUTL/
RXINP
PVDD HPVSS
HPGND
RECN/
B
C
D
E
F
G
SPKRN
SPKRP
BCLKS1
DVDDS1 SDINS1
DGND
SDOUTS2 DVDDS2 SDINS2 MIC2P
SDOUTS1
MCLK IRQ
BCLKS2 LRCLKS2
SPKLVDD SPKLP SPKRGND SPKLN
SPKRVDD
SPKRVDD LRCLKS1
N.C.
SPKLGND SPKRP SPKLGND N.C
MAX98089
N.C. INB2
SCL SDA REG
AVDD DVDD REF
LOUTR/
RXINN
N.C.
C1P
N.C. HPSNS
N.C.
INB1 JACKSNS
MICBIAS
AGND MIC2N
C1N
MIC1P/
DIGMICDATA
MIC1N/
DIGMICCLK
HPVDD
HPL
HPR
INA2/
EXTMICN
INA1/
EXTMICP
���������������������������������������������������������������� Maxim Integrated Products 55
TOP VIEW
MIC2N
MICBIAS
JACKSNS
N.C.
AGND
REF
REG
AVDD
SCL
SDA
DVDD
SDINS2
DVDDS2
IRQ
Low-Power, Stereo Audio Codec
with FlexSound Technology
HPVDD
HPL
HPSNS
HPR
INB2
INB1
INA2/EXTMICN
INA1/EXTMICP
MIC1P/DIGMICDATA
MIC1N/DIGMICCLK
MIC2P
42 41 40 39 38 37 36 35 34 33 32 31 30 29
43
44
45
46
47
48
49
50
51
52
53
54
55
56
1
2 3 4 5 6 7 8 9 10 11 12 13 14
MAX98089
MAX98089
Pin Configuration (continued)
HPVSS
HPGND
N.C.
28
N.C.
27
CIN
26
C1P
25
PVDD
24
RECP/LOUTL/RXINP
23
RECN/LOUTR/RXINN
22
SPKLN
21
SPKLGND
20
SPKLP
19
SPKLVDD
18
SPKRVDD
17
SPKRP
EP*
16
15
SPKRGND
SPKRN
N.C.
N.C.
BCLKS2
SDOUTS2
DGND
MCLK
LRCLKS2
DVDDS1
SDOUTS1
SDINS1
BCLKS1
N.C.
LRCLKS1
N.C.
TQFN
(7mm x 7mm x 0.75mm)
*EP = EXPOSED PAD. CONNECT TO GROUND PLANE.
���������������������������������������������������������������� Maxim Integrated Products 56
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Pin Description
BUMP
(WLP)
A1, B1 15 SPKRN Negative Right-Channel Class D Speaker Output
A2, B2 16 SPKRGND Right-Speaker Ground
A3, B3 19 SPKLVDD
A4, B4 20 SPKLP Positive Left-Channel Class D Speaker Output
A5, B5 22 SPKLN Negative Left-Channel Class D Speaker Output
A6 24
A7 25 PVDD
A8 31 HPVSS
A9 30 HPGND Headphone Ground
B6 23
B7 26 C1P
B8 27 C1N
B9 32 HPVDD
C1, C2 17 SPKRP Positive Right-Channel Class D Speaker Output
C3, D3 18 SPKRVDD
C4, C5 21 SPKLGND Left-Speaker Ground
C6, C7, D5,
D6, D7, E3
C8 34 HPSNS
C9 33 HPL Left-Channel Headphone Output
D1 8 BCLKS1
D2 7 SDOUTS1
D4 10 LRCLKS1
D8
D9 35 HPR Right-Channel Headphone Output
PIN
(TQFN-EP)
11–14,
28, 29, 46
36 INB2 Single-Ended Line Input B2. Also positive differential line input B.
NAME FUNCTION
Left-Speaker, REF, Receiver Amp Power Supply. Bypass to SPKLGND with a 1F F
and a 10F F capacitor.
RECP/LOUTL/
RXINP
RECN/LOUTR/
RXINN
N.C. No Connection
Positive Receiver Amplifier Output or Left Line Output. Can be positive bypass
switch input when receiver amp is shut down.
Headphone Power Supply. Bypass to HPGND with a 1F F and a 10F F capacitor.
Inverting Charge-Pump Output. Bypass to HPGND with a 1F F ceramic capacitor.
Negative Receiver Amplifier Output or Right Line Output. Can be negative bypass
switch input when receiver amp is shut down.
Charge-Pump Flying Capacitor Positive Terminal. Connect a 1F F ceramic
capacitor between C1N and C1P.
Charge-Pump Flying Capacitor Negative Terminal. Connect a 1F F ceramic
capacitor between C1N and C1P.
Noninverting Charge-Pump Output. Bypass to HPGND with a 1F F ceramic capacitor.
Right-Speaker Power Supply. Bypass to SPKRGND with a 1F F capacitor.
Headphone Amplifier Ground Sense. Connect to the headphone jack ground
terminal for optimal performance or connect to PCB ground.
S1 Digital Audio Bit Clock Input/Output. BCLKS1 is an input when the IC is in slave
mode and an output when in master mode. The input/output voltage is referenced
to DVDDS1.
S1 Digital Audio Serial-Data ADC Output. The output voltage is referenced to
DVDDS1.
S1 Digital Audio Left-Right Clock Input/Output. LRCLKS1 is the audio sample rate
clock and determines whether S1 audio data is routed to the left or right channel.
In TDM mode, LRCLKS1 is a frame sync pulse. LRCLKS1 is an input when the IC
is in slave mode and an output when in master mode.
���������������������������������������������������������������� Maxim Integrated Products 57
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Pin Description (continued)
BUMP
(WLP)
E1 6 DVDDS1
E2 5 MCLK Master Clock Input. Acceptable input frequency range is 10MHz to 60MHz.
E4 9 SDINS1
E5 56
E6 45 JACKSNS
E7 37 INB1 Single-Ended Line Input B1. Also negative differential line input B.
E8 40
E9 38
F1 3 DGND Digital Ground
F2 2 BCLKS2
F3 4 LRCLKS2
F4 52 SDA
F5 51 SCL I
F6 49 REG
F7 44 MICBIAS
F8 41
F9 39
PIN
(TQFN-EP)
NAME FUNCTION
S1 Digital Audio Interface Power-Supply Input. Bypass to DGND with a 1F F capacitor.
S1 Digital Audio Serial-Data DAC Input. The input/output voltage is referenced to
DVDDS1.
Hardware Interrupt Output. IRQ can be programmed to pull low when bits in
IRQ
MIC1P/
DIGMICDATA
INA2/
EXTMICN
MIC1N/
DIGMICCLK
INA1/
EXTMICP
status register 0x00 change state. Read status register 0x00 to clear IRQ once
set. Repeat faults have no effect on IRQ until it is cleared by reading the I
register 0x00. Connect a 10kI pullup resistor to DVDD for full output swing.
Jack Sense. Detects the insertion and removal of a jack. In typical applications,
connect JACKSNS to the MIC pole of the jack. See the Jack Detection section.
Positive Differential Microphone 1 Input. AC-couple a microphone with a series
1F F capacitor. Can be retasked as a digital microphone data input.
Single-Ended Line Input A2. Also positive differential line input A or negative differential external microphone input.
S2 Digital Audio Bit Clock Input/Output. BCLKS2 is an input when the IC is in slave
mode and an output when in master mode. The input/output voltage is referenced
to DVDDS2.
S2 Digital Audio Left-Right Clock Input/Output. LRCLKS2 is the audio sample rate
clock and determines whether audio data on S2 is routed to the left or right channel. In TDM mode, LRCLKS2 is a frame sync pulse. LRCLKS2 is an input when the
IC is in slave mode and an output when in master mode. The input/output voltage
is referenced to DVDDS2.
2
I
C Serial-Data Input/Output. Connect a pullup resistor to DVDD for full output
swing.
2
C Serial-Clock Input. Connect a pullup resistor to DVDD for full output swing.
Common-Mode Voltage Reference. Bypass to AGND with a 1F F capacitor.
Low-Noise Bias Voltage. Outputs a 2.2V microphone bias. An external 2.2kI resistor should be placed between MICBIAS and the microphone output.
Negative Differential Microphone 1 Input. AC-couple a microphone with a series
1F F capacitor. Can be retasked as a digital microphone clock output.
Single-Ended Line Input A1. Also negative differential line input A or positive differential external microphone input.
2
C status
���������������������������������������������������������������� Maxim Integrated Products 58
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Pin Description (continued)
BUMP
(WLP)
G1 1 SDOUTS2
G2 55 DVDDS2
G3 54 SDINS2
G4 53 DVDD
G5 50 AVDD
G6 48 REF
G7 47 AGND Analog Ground
G8 43 MIC2N
G9 42 MIC2P
— — EP Exposed Pad (TQFN Only). Connect the exposed pad to the PCB ground plane.
PIN
(TQFN-EP)
NAME FUNCTION
S2 Digital Audio Serial-Data ADC Output. The output voltage is referenced to
DVDDS2.
S2 Digital Audio Interface Power-Supply Input. Bypass to DGND with a 1F F capacitor.
S2 Digital Audio Serial-Data DAC Input. The input voltage is referenced to
DVDDS2.
Digital Power Supply. Supply for the digital core and I
DGND with a 1F F capacitor.
Analog Power Supply. Bypass to AGND with a 1F F capacitor.
Converter Reference. Bypass to AGND with a 2.2F F capacitor.
Negative Differential Microphone 2 Input. AC-couple a microphone with a series
1F F capacitor.
Positive Differential Microphone 2 Input. AC-couple a microphone with a series 1FF
capacitor.
2
C interface. Bypass to
���������������������������������������������������������������� Maxim Integrated Products 59
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Detailed Description
The MAX98089 is a fully integrated stereo audio codec
with FLEXSOUND technology and integrated amplifiers.
Two differential microphone amplifiers can accept signals
from three analog inputs. One input can be retasked to
support two digital microphones. Any combination of two
microphones (analog or digital) can be recorded simultaneously. The analog signals are amplified up to 50dB
and recorded by the stereo ADC. The digital record path
supports voice filtering with selectable preset highpass
filters and high stopband attenuation at f
ic gain control (AGC) circuit monitors the digitized signal
and automatically adjusts the analog microphone gain
to make best use of the ADC’s dynamic range. A noise
gate attenuates signals below the user-defined threshold
to minimize the noise output by the ADC.
The IC includes two analog line inputs. One of the line
inputs can be optionally retasked as a third analog microphone input. Both line inputs support either stereo singleended input signals or mono differential signals. The line
inputs are preamplified and then routed to the ADC for
recording and/or to the output amplifiers for playback.
The single-ended line inputs signals from INA1 and INA2
can bypass the PGAs, and be connected directly to the
ADC input to provide the best dynamic range.
Integrated analog switches allow two differential microphone signals to be routed out the third microphone input
to an external device. This eliminates the need for an
external analog switch in systems that have two devices
recording signals from the same microphone.
Through two digital audio interfaces, the device can
transmit one stereo audio signal and receive two stereo
audio signals in a wide range of formats including I
PCM, and up to four mono slots in TDM. Each interface
can be connected to either of two audio ports (S1 and
S2) for communication with external devices. Both audio
interfaces support 8kHz to 96kHz sample rates. Each
input signal is independently equalized using 5-band
parametric equalizers. A multiband automatic level control (ALC) boosts signals by up to 12dB. One signal path
additionally supports the same voiceband filtering as the
ADC path.
The IC includes a stereo Class D speaker amplifier, a
high-efficiency Class H stereo headphone amplifier, and
a differential receiver amplifier that can be configured as
a single-ended stereo line output.
/2. An automat-
S
2
S,
When the receiver amplifier is disabled, analog switches
allow RECP/RXINP and RECN/RXINN to be reused for
signal routing. In systems where a single transducer is
used for both the loudspeaker and receiver, an external receiver amplifier can be routed to the left speaker
through RECP/RXINP and RECN/RXINN, bypassing the
Class D amplifier. If the internal receiver amplifier is used,
then leave RECP/RXINP and RECN/RXINN unconnected.
In systems where an external amplifier drives both the
receiver and the MAX98089’s line input, one of the differential signals can be disconnected from the receiver
when not needed by passing it through the analog switch
that connects RECP/RXINP to RECN/RXINN.
The stereo Class D amplifier provides efficient amplification for two speakers. The amplifier includes active emissions limiting to minimize the radiated emissions (EMI)
traditionally associated with Class D. In most systems,
no output filtering is required to meet standard EMI limits.
To optimize speaker sound quality, the IC includes an
excursion limiter, a distortion limiter, and a power limiter.
The excursion limiter is a dynamic highpass filter with
variable corner frequency that increases in response
to high signal levels. Low-frequency energy typically
causes more distortion than useful sound at high signal levels, so attenuating low frequencies allows the
speaker to play louder without distortion or damage. At
lower signal levels, the filter corner frequency reduces
to pass more low frequency energy when the speaker
can handle it. The distortion limiter reduces the volume
when the output signal exceeds a preset distortion level.
This ensures that regardless of input signal and battery
voltage, excessive distortion is never heard by the user.
The power limiter monitors the continuous power into the
loudspeaker and lowers the signal level if the speaker is
at risk of overheating.
The stereo Class H headphone amplifier uses a dualmode charge pump to maximize efficiency while outputting a ground-referenced signal. This eliminates the
need for DC-blocking capacitors or a midrail bias for the
headphone jack ground return. Ground sense reduces
output noise caused by ground return current.
The IC integrates jack detection allowing the detection
of insertion and removal of accessories as well as button
presses.
���������������������������������������������������������������� Maxim Integrated Products 60
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
I2C Slave Address
Configure the MAX98089 using the I2C control bus. The
IC uses a slave address of 0x20 or 00100000 for write
operations and 0x21 or 00100001 for read operations.
2
See the I
C Serial Interface section for a complete inter-
face description.
Table 1 lists all of the registers, their addresses, and
power-on-reset states. Registers 0x00 to 0x03 and 0xFF
are read-only while all of the other registers are read/
write. Write zeros to all unused bits in the register table
when updating the register, unless otherwise noted.
Registers
Table 1. Register Map
REGISTER B7 B6 B5 B4 B3 B2 B1 B0 ADDRESS DEFAULT R/W PAGE
STATUS
Status CLD SLD ULK — — — JDET — 0x00 — R 117
Microphone
AGC/NG
Jack Status JKSNS — — — — — — 0x02 — R 115
Battery
Voltage
Interrupt
Enable
MASTER CLOCK CONTROL
Master Clock 0 0 PSCLK 0 0 0 0 0x10 0x00 R/W 85
DAI1 CLOCK CONTROL
Clock Mode SR1 FREQ1 0x11 0x00 R/W 85, 86
Any Clock
Control
DAI1 CONFIGURATION
Format MAS1 WCI1 BCI1 DLY1 0 TDM1 FSW1 WS1 0x14 0x00 R/W 80
Clock ADC_OSR1
I/O
Configuration
Time-Division
Multiplex
Filters MODE1 AVFLT1 DHF1 DVFLT1 0x18 0x00 R/W 90
DAI2 CLOCK CONTROL
Clock Mode SR2 0 0 0 0 0x19 0x00 R/W 85
Any Clock
Control
DAI2 CONFIGURATION
Format MAS2 WCI2 BCI2 DLY2 0 TDM2 FSW2 WS2 0x1C 0x00 R/W 80
Clock 0 0
I/O
Configuration
— — — VBAT 0x03 — R/W 116
ICLD ISLD IULK 0 0 0 IJDET 0 0x0F 0x00 R/W 117
PLL1 NI1[14:8] 0x12 0x00 R/W 86
PLL2 NI2[14:8] 0x1A 0x00 R/W 86
NG AGC 0x01 — R 74
NI1[7:1] NI1[0] 0x13 0x00 R/W 86
DAC_ORS1
SEL1 LTEN1 LBEN1 DMONO1 HIZOFF1 SDOEN1 SDIEN1 0x16 0x00 R/W 81, 82
SLOTL1 SLOTR1 SLOTDLY1 0x17 0x00 R/W 82
DAC_
ORS2
SEL2 0 LBEN2 DMONO2 HIZOFF2 SDOEN2 SDIEN2 0x1E 0x00 R/W 81, 82
0 0 BSEL1 0x15 0x00 R/W 81
NI2[7:1] NI2[0] 0x1B 0x00 R/W 86
0 0 BSEL2 0x1D 0x00 R/W 81
���������������������������������������������������������������� Maxim Integrated Products 61
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 1. Register Map (continued)
REGISTER B7 B6 B5 B4 B3 B2 B1 B0 ADDRESS DEFAULT R/W PAGE
Time-Division
Multiplex
Filters 0 0 0 0 DHF2 0 0 DCB2 0x20 0x00 R/W 96
SRC
Sample Rate
Converter
MIXERS
DAC Mixer MIXDAL MIXDAR 0x22 0x00 R/W 96
Left ADC
Mixer
Right ADC
Mixer
Left
Headphone
Amplifier
Mixer
Right
Headphone
Amplifier
Mixer
Headphone
Amplifier
Mixer Control
Left Receiver
Amplifier
Mixer
Right
Receiver
Amplifier
Mixer
Receiver
Amplifier
Mixer Control
Left Speaker
Amplifier
Mixer
Right
Speaker
Amplifier
Mixer
Speaker
Amplifier
Mixer Control
SLOTL2 SLOTR2 SLOTDLY2 0x1F 0x00 R/W 82
0 0 0
0 0
LINE_
MODE
0 0 0 0 MIXSPR_GAIN MIXSPL_GAIN 0x2D 0x00 R/W 101
MIXHPR_
PATHSEL
0 0 0 MIXRECR_GAIN MIXRECL_GAIN 0x2A 0x00 R/W 98
SRMIX_
MODE
MIXHPL_
PATHSEL
SRMIX_
ENL
MIXADL 0x23 0x00 R/W 73
MIXADR 0x24 0x00 R/W 73
MIXHPL 0x25 0x00 R/W 110
MIXHPR 0x26 0x00 R/W 110
MIXHPR_GAIN MIXHPL_GAIN 0x27 0x00 R/W 110
MIXRECL 0x28 0x00 R/W 98
MIXRECR 0x29 0x00 R/W 98
MIXSPL 0x2B 0x00 R/W 101
MIXSPR 0x2C 0x00 R/W 101
SRMIX_
ENR
SRC_
ENL
SRC_
ENR
0x21 0x00 R/W 89
���������������������������������������������������������������� Maxim Integrated Products 62
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 1. Register Map (continued)
REGISTER B7 B6 B5 B4 B3 B2 B1 B0 ADDRESS DEFAULT R/W PAGE
LEVEL CONTROL
Sidetone DSTS 0 DVST 0x2E 0x00 R/W 78
DAI1
Playback
Level
DAI1
Playback
Level
DAI2
Playback
Level
DAI2
Playback
Level
Left ADC
Level
Right ADC
Level
Microphone 1
Input Level
Microphone 2
Input Level
INA Input
Level
INB Input
Level
Left
Headphone
Amplifier
Volume
Control
Right
Headphone
Amplifier
Volume
Control
Left Receiver
Amplifier
Volume
Control
Right
Receiver
Amplifier
Volume
Control
DV1M 0 DV1G DV1 0x2F 0x00 R/W 95
0 0 0 EQCLP1 DVEQ1 0x30 0x00 R/W 94
DV2M 0 0 0 DV2 0x31 0x00 R/W 95
0 0 0 EQCLP2 DVEQ2 0x32 0x00 R/W 94
0 0 AVLG AVL 0x33 0x00 R/W 77
0 0 AVRG AVR 0x34 0x00 R/W 77
0 PA1EN PGAM1 0x35 0x00 R/W 70
0 PA2EN PGAM2 0x36 0x00 R/W 70
0 INAEXT 0 0 0 PGAINA 0x37 0x00 R/W 72
0 INBEXT 0 0 0 PGAINB 0x38 0x00 R/W 72
HPLM 0 0 HPVOLL 0x39 0x00 R/W 111
HPRM 0 0 HPVOLR 0x3A 0x00 R/W 111
RECLM 0 0 RECVOLL 0x3B 0x00 R/W 99
RECRM 0 0 RECVOLR 0x3C 0x00 R/W 99
���������������������������������������������������������������� Maxim Integrated Products 63
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 1. Register Map (continued)
REGISTER B7 B6 B5 B4 B3 B2 B1 B0 ADDRESS DEFAULT R/W PAGE
Left Speaker
Amplifier
Volume
Control
Right
Speaker
Amplifier
Volume
Control
MICROPHONE AGC
Configuration AGCSRC AGCRLS AGCATK AGCHLD 0x3F 0x00 R/W 74, 75
Threshold ANTH AGCTH 0x40 0x00 R/W 75
SPEAKER SIGNAL PROCESSING
Excursion
Limiter Filter
Excursion
Limiter
Threshold
ALC ALCEN ALCRLS ALCMB ALCTH 0x43 0x00 R/W 93, 104
Power Limiter PWRTH 0 PWRK 0x44 0x00 R/W 105
Power Limiter PWRT2 PWRT1 0x45 0x00 R/W 106
Distortion
Limiter
CONFIGURATION
Audio Input INADIFF INBDIFF 0 0 0 0 0 0 0x47 0x00 R/W 72
Microphone MICCLK DIGMICL DIGMICR 0
Level Control VS2EN VSEN ZDEN 0 0 0 EQ2EN EQ1EN 0x49 0x00 R/W 94, 113
Bypass
Switches
Jack
Detection
POWER MANAGEMENT
Input Enable INAEN INBEN 0 0 MBEN 0 ADLEN ADREN 0x4C 0x00 R/W 67
Output
Enable
Top-Level
Bias Control
DAC Low
Power Mode 1
DAC Low
Power Mode 2
System
Shutdown
SPLM 0 0 SPVOLL 0x3D 0x00 R/W 102
SPRM 0 0 SPVOLR 0x3E 0x00 R/W 102
0 DHPUCF 0 0 DHPLCF 0x41 0x00 R/W 104
0 0 0 0 0 DHPTH 0x42 0x00 R/W 104
THDCLP 0 0 0 THDT1 0x46 0x00 R/W 107
0 EXTMIC 0x48 0x00 R/W 70
INABYP 0 0 MIC2BYP 0 0 RECBYP SPKBYP 0x4A 0x00 R/W
JDETEN 0 0 0 0 0 JDEB 0x4B 0x00 R/W 115
HPLEN HPREN SPLEN SPREN RECLEN RECREN DALEN DAREN 0x4D 0x00 R/W 68
BGEN
SHDN VBATEN 0 0
SPREGEN
0 0 0 0
VCMEN BIASEN 0 0 0 JDWK 0x4E 0xF0 R/W 68
DAI2_DAC_LP DAI1_DAC_LP 0x4F 0x00 R/W 87
DAC2_IP_
DITH_EN
PERFMODE HPPLYBACK
DAC1_IP_
DITH_EN
CGM2_ENCGM1_
EN
PWRSV8K
PWRSV 0x51 0x00 R/W
0x50 0x0F R/W 87
71,
112
67,
116
���������������������������������������������������������������� Maxim Integrated Products 64
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 1. Register Map (continued)
REGISTER B7 B6 B5 B4 B3 B2 B1 B0 ADDRESS DEFAULT R/W PAGE
DSP COEFFICIENTS
EQ Band 1
(DAI1/DAI2)
EQ Band 2
(DAI1/DAI2)
EQ Band 3
(DAI1/DAI2)
EQ Band 4
(DAI1/DAI2)
K_1[15:8] 0x52/0x84 0xXX R/W 93
K_1[7:0] 0x53/0x85 0xXX R/W
K1_1[15:8] 0x54/0x86 0xXX R/W
K1_1[7:0] 0x55/0x87 0xXX R/W
K2_1[15:8] 0x56/0x88 0xXX R/W
K2_1[7:0] 0x57/0x89 0xXX R/W
c1_1[15:8] 0x58/0x8A 0xXX R/W
c1_1[7:0] 0x59/0x8B 0xXX R/W
c2_1[15:8] 0x5A/0x8C 0xXX R/W
c2_1[7:0] 0x5B/0x8D 0xXX R/W
K_2[15:8] 0x5C/0x8E 0xXX R/W
K_2[7:0] 0x5D/0x8F 0xXX R/W
K1_2[15:8] 0x5E/0x90 0xXX R/W
K1_2[7:0] 0x5F/0x91 0xXX R/W
K2_2[15:8] 0x60/0x92 0xXX R/W
K2_2[7:0] 0x61/0x93 0xXX R/W
c1_2[15:8] 0x62/0x94 0xXX R/W
c1_2[7:0] 0x63/0x95 0xXX R/W
c2_2[15:8] 0x64/0x96 0xXX R/W
c2_2[7:0] 0x65/0x97 0xXX R/W
K_3[15:8] 0x66/0x98 0xXX R/W
K_3[7:0] 0x67/0x99 0xXX R/W
K1_3[15:8] 0x68/0x9A 0xXX R/W
K1_3[7:0] 0x69/0x9B 0xXX R/W
K2_3[15:8] 0x6A/0x9C 0xXX R/W
K2_3[7:0] 0x6B/0x9D 0xXX
c1_3[15:8] 0x6C/0x9E 0xXX R/W
c1_3[7:0] 0x6D/0x9F 0xXX R/W
c2_3[15:8] 0x6E/0xAE 0xXX R/W
c2_3[7:0] 0x6F/0xA1 0xXX R/W
K_4[15:8] 0x70/0xA2 0xXX R/W
K_4[7:0] 0x71/0xA3 0xXX R/W
K1_4[15:8] 0x72/0xA4 0xXX R/W
K1_4[7:0] 0x73/0xA5 0xXX R/W
K2_4[15:8] 0x74/0xA6 0xXX R/W
K2_4[7:0] 0x75/0xA7 0xXX R/W
c1_4[15:8] 0x76/0xA8 0xXX R/W
c1_4[7:0] 0x77/0xA9 0xXX R/W
c2_4[15:8] 0x78/0xAA 0xXX R/W
c2_4[7:0] 0x79/0xAB 0xXX R/W
R/W
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
���������������������������������������������������������������� Maxim Integrated Products 65
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 1. Register Map (continued)
REGISTER B7 B6 B5 B4 B3 B2 B1 B0 ADDRESS DEFAULT R/W PAGE
K_5[15:8] 0x7A/0xAC 0xXX R/W
K_5[7:0] 0x7B/0xAD 0xXX R/W
K1_5[15:8] 0x7C/0xAE 0xXX R/W
K1_5[7:0] 0x7D/0xAF 0xXX R/W
EQ Band 5
(DAI1/DAI2)
Excursion
Limiter
Biquad
(DAI1/DAI2)
REVISION ID
Rev ID REV 0xFF 0x40 R 118
K2_5[15:8] 0x7E/0xB0 0xXX R/W
K2_5[7:0] 0x7F/0xB1 0xXX R/W
c1_5[15:8] 0x80/0xB2 0xXX R/W
c1_5[7:0] 0x81/0xB3 0xXX R/W
c2_5[15:8] 0x82/0xB4 0xXX R/W
c2_5[7:0] 0x83/0xB5 0xXX R/W
a1[15:8] 0xB6/0xC0 0xXX R/W
a1[7:0] 0xB7/0xC1 0xXX R/W
a2[15:8] 0xB8/0xC2 0xXX R/W
a2[7:0] 0xB9/0xC3 0xXX R/W
b0[15:8] 0xBA/0xC4 0xXX R/W
b0[7:0] 0xBB/0xC5 0xXX R/W
b1[15:8] 0xBC/0xC6 0xXX R/W
b1[7:0] 0xBD/0xC7 0xXX R/W
b2[15:8] 0xBE/0xC8 0xXX R/W
b2[7:0] 0xBF/0xC9 0xXX R/W
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
93
���������������������������������������������������������������� Maxim Integrated Products 66
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Power Management
The IC includes comprehensive power management to allow the disabling of all unused circuits, minimizing supply
current.
Table 2. Power Management Registers
REGISTER BIT NAME DESCRIPTION
Global Shutdown. Disables everything except the headset detection circuitry, which is
controlled separately.
0 = Device Shutdown
1 = Device Enabled
Performance Mode. Selects DAC to headphone playback performance mode.
0 = High performance playback mode.
1 = Low power playback mode.
Headphone Only Playback Mode. Configures System Bias Control register bits for low
power playback when using DAC to headphone playback path only. When enabled, this
bit overrides the System Bias Control register settings. When disabled, the System Bias
Control register is used to enable system bias blocks. Set both HPPLYBCK and PERFMODE for lowest power consumption when using DAC to headphone playback path
only.
0 = Disabled
1 = Enabled
8kHz Power Save Mode. PWRSV8K configures the ADC for reduced power consumption when f
for more power savings.
0 = Normal, high-performance mode.
1 = Low power mode.
Power Save Mode. PWRSV configures the ADC for reduced power consumption for all
sample rates. PWRSV can be used in conjunction with PWRSV8K for more power savings.
0 = Normal, high-performance mode.
1 = Low-power mode.
Line Input A Enable
0 = Disabled
1 = Enabled
Line Input B Enable
0 = Disabled
1 = Enabled
Microphone Bias Enable
0 = Disabled
1 = Enabled
Left ADC Enable
0 = Disabled
1 = Enabled
Right ADC Enable
0 = Disabled
1 = Enabled
= 8kHz. PWRSV8K can be used in conjunction with PWRSV when fS = 8kHz
S
0x51
0x4C
7
6 VBATEN See the Battery Measurement section.
3 PERFMODE
2 HPPLYBCK
1 PWRSV8K
0 PWRSV
7 INAEN
6 INBEN
3 MBEN
1 ADLEN
0 ADREN
SHDN
���������������������������������������������������������������� Maxim Integrated Products 67
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 2. Power Management Registers (continued)
REGISTER BIT NAME DESCRIPTION
Left Headphone Enable
7 HPLEN
6 HPREN
5 SPLEN
4 SPREN
0x4D
3 RECLEN
2 RECREN
1 DALEN
0 DAREN
7 BGEN
6 SPREGEN
0x4E
5 VCMEN
4 BIASEN
0 JDWK See the Jack Detection section.
0 = Disabled
1 = Enabled
Right Headphone Enable
0 = Disabled
1 = Enabled
Left Speaker Enable
0 = Disabled
1 = Enabled
Right Speaker Enable
0 = Disabled
1 = Enabled
Receiver/Left Line Output Enable. Use this bit to enable the differential receiver output
or left line output.
0 = Disabled
1 = Enabled
Right Line Output Enable. Use this bit to enable the right line output.
0 = Disabled
1 = Enabled
Left DAC Enable
0 = Disabled
1 = Enabled
Right DAC Enable
0 = Disabled
1 = Enabled
Bandgap Enable. Must be enabled for proper operation of the 2.5V regulator and associated circuitry.
0 = Disabled
1 = Enabled
2.5V Regulator Enable. SPREGEN enables a 2.5V internal regulator required for the
ADC, speaker and receiver/line out amplifier. The 2.5V regulator is powered by SPKLVDD.
0 = Disabled
1 = Enabled
Common-Mode Voltage Resistor String Enable. VCMEN enables the common mode
voltage for the input and output amplifiers in the codec.
0 = Disabled
1 = Enabled
Chip Bias Enable. BIASEN needs to be set for the codec amplifiers to be enabled.
0 = Disabled
1 = Enabled
MAX98089
���������������������������������������������������������������� Maxim Integrated Products 68
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Microphone Inputs
The device includes three differential microphone inputs
and a low-noise microphone bias for powering the microphones (Figure 6). One microphone input can also be configured as a digital microphone input accepting signals
from up to two digital microphones. Any two microphones,
analog or digital, can be recorded simultaneously.
In the typical application, one microphone input is used
for the handset microphone and the other is used as an
accessory microphone. In systems using a background
noise microphone, INA can be retasked as another
microphone input.
In systems where the codec is not the only device
recording microphone signals, connect microphones to
MCLK
MICBIAS
MIC1P/
DIGMICDATA
MIC1N/
DIGMICCLK
MBEN
MIC2BYP
REG
CLOCK
CONTROL
EXTMIC PA1EN:
0/20/30dB
MIC2P/MIC2N and EXTMICP/EXTMICN. MIC1P/MIC1N
then become outputs that route the microphone signals
to an external device as needed. Two devices can then
record microphone signals without needing external
analog switches.
Analog microphone signals are amplified by two stages
of gain and then routed to the ADCs. The first stage offers
selectable 0dB, 20dB, or 30dB settings. The second
stage is a programmable-gain amplifier (PGA) adjustable
from 0dB to 20dB in 1dB steps. To maximize the signalto-noise ratio, use the gain in the first stage whenever
possible. Zero-crossing detection is included on the PGA
to minimize zipper noise while making gain changes.
PGAM1:
+20dB TO 0dB
AGC CONTROL
MIC2P
MIC2N
INABYP
INA1/EXTMICP
INA2/EXTMICN
Figure 6. Microphone Input Block Diagram
���������������������������������������������������������������� Maxim Integrated Products 69
EXTMIC PA2EN:
0/20/30dB
PGAINA:
+20dB TO -6dB
PGAM1:
+20dB TO 0dB
PGAINA:
+20dB TO -6dB
INADIFF
MIX
MIXADL
MIX
MIXADR
ADLEN
ADCL
ADCR
ADREN
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 3. Microphone Input Registers
REGISTER BIT NAME DESCRIPTION
MIC1/MIC2 Preamplifier Gain
0x35/0x36
0x48
6
PA1EN/PA2EN
5
4
3
2
PGAM1/PGAM2
1
0
7
MICCLK
6
5 DIGMICL
4 DIGMICR
1
EXTMIC
0
Course microphone gain adjustment.
00 = Preamplifier disabled
01 = 0dB
10 = 20dB
11 = 30dB
MIC1/MIC2 PGA
Fine microphone gain adjustment.
VALUE GAIN (dB) VALUE GAIN (dB)
0x00 +20 0x0B +9
0x01 +19 0x0C +8
0x02 +18 0x0D +7
0x03 +17 0x0E +6
0x04 +16 0x0F +5
0x05 +15 0x10 +4
0x06 +14 0x11 +3
0x07 +13 0x12 +2
0x08 +12 0x13 +1
0x09 +11 0x14 to 0x1F 0
0x0A +10
Digital Microphone Clock Frequency
Select a frequency that is within the digital microphone’s clock frequency range. Set
OSR1 = 1 when using a digital microphone.
00 = PCLK/8
01 = PCLK/6
10 = 64 x LRCLK
11 = Reserved
Left Digital Microphone Enable
Set PA1EN = 00 for proper operation.
0 = Disabled
1 = Enabled
Right Digital Microphone Enable
Set PA1EN = 00 for proper operation.
0 = Disabled
1 = Enabled
External Microphone Connection
Routes INA_/EXTMIC_ to the microphone preamplifiers. Set INAEN = 0 when using
INA_/EXTMIC_ as a microphone input.
00 = Disabled
01 = MIC1 input
10 = MIC2 input
11 = Reserved
MAX98089
���������������������������������������������������������������� Maxim Integrated Products 70
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 3. Microphone Input Registers (continued)
REGISTER BIT NAME DESCRIPTION
INA�/EXTMIC� to MIC1� Bypass Switch
7 INABYP
4 MIC2BYP
0x4A
1 RECBYP
0 SPKBYP
0 = Disabled
1 = Enabled
MIC1� to MIC2� Bypass Switch
0 = Disabled
1 = Enabled
See the Output Bypass Switches section.
MAX98089
Line Inputs
The device includes two sets of line inputs (Figure 7).
Each set can be configured as a stereo single-ended
input or as a mono differential input. Each input includes
adjustable gain to match a wide range of input signal
levels. If a custom gain is needed, the external gain
mode provides a trimmed feedback resistor. Set the gain
INABYP
PGAINA:
INA1/
EXTMICP
INA2/
EXTMICN
INB1
INB2
+20dB TO -6dB
PGAINA:
+20dB TO -6dB
PGAINB:
+20dB TO -6dB
PGAINB:
+20dB TO -6dB
INADIFF
INBDIFF
by choosing the appropriate input resistor and using the
following formula:
AV
= 20 x log (20kI /RIN)
PGAIN
The external gain mode also allows summing multiple
signals into a single input, by connecting multiple input
resistors as show in Figure 8, and/or inputting signals
larger than 1V
by adjusting the ration of the 20kI /R
P-P
IN
less than 1.
LEFT
INPUT 1
LEFT
INPUT 2
RIGHT
INPUT 1
RIGHT
INPUT 2
INA1/EXTMICP
VCM
INA2/EXTMICN
VCM
20kI
20kI
1V
(max)
P-P
1V
(max)
P-P
Figure 7. Line Input Block Diagram
���������������������������������������������������������������� Maxim Integrated Products 71
Figure 8. Summing Multiple Input Signals into INA/INB
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 4. Line Input Registers
REGISTER BIT NAME DESCRIPTION
Line Input A/B External Gain
Switches out the internal input resistor and selects a trimmed 20kI feedback resistor.
Use an external input resistor to set the gain of the line input.
0 = Disabled
1 = Enabled
Line Input A/B Internal Gain Settings
000 = +20dB
001 = +14dB
010 = +3dB
011 = 0dB
100 = -3dB
101 = -6dB
110 = -6dB
111 = -6dB
Line Input A Differential Enable
0 = Stereo single-ended input
1 = Mono differential input
Line Input B Differential Enable
0 = Stereo single-ended input
1 = Mono differential input
0x37/0x38
0x47
6 INAEXT/INBEXT
2
1
PGAINA/PGAINB
0
7 INADIFF
6 INBDIFF
MAX98089
ADC Input Mixers
The IC’s stereo ADC accepts input from the microphone
amplifiers, line inputs amplifiers, and directly from the
INA1 and INA2. The ADC mixer routes any combination of the eight audio inputs to the left and right ADCs
(Figure 9).
PGAM1:
+20dB TO 0dB
PA1EN:
0/20/30dB
PGAM2:
+20dB TO 0dB
PA2EN:
0/20/30dB
PGAINA:
+20dB TO -6dB
INADIFF
PGAINA:
+20dB TO -6dB
+
PGAINB:
+20dB TO -6dB
INBDIFF
PGAINB:
+20dB TO -6dB
+
Figure 9. ADC Input Mixer Block Diagram
MIX
MIXADL
MIX
MIXADR
ADLEN
ADCL
ADCR
ADREN
���������������������������������������������������������������� Maxim Integrated Products 72
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 5. ADC Input Mixer Register
REGISTER BIT NAME DESCRIPTION
0x23/0x24
7
6
5
4
MIXADL/MIXADR
3
2
1
0
Left/Right ADC Input Mixer
Selects which analog inputs are recorded by the left/right ADC.
1xxxxxxx = MIC1
x1xxxxxx = MIC2
xx1xxxxx = INA1 pin direct
xxx1xxxx = INA2 pin direct
xxxx1xxx = INA1
xxxxx1xx = INA2 (INADIFF = 0) or INA2 - INA1 (INADIFF = 1)
xxxxxx1x = INB1
xxxxxxx1 = INB2 (INBDIFF = 0) or INB2 - INB1 (INBDIFF = 1)
MAX98089
Record Path Signal Processing
The device’s record signal path includes both automatic
gain control (AGC) for the microphone inputs and a digital noise gate at the output of the ADC (Figure 10).
Microphone AGC
The IC’s AGC monitors the signal level at the output of the
ADC and then adjusts the MIC1 and MIC2 analog PGA
settings automatically. When the signal level is below
the predefined threshold, the gain is increased up to its
maximum (20dB). If the signal exceeds the threshold,
the gain is reduced to prevent the output signal level
exceeding the threshold. When AGC is enabled, the
microphone PGA is not user programmable. The AGC
provides a more constant signal level and improves the
available ADC dynamic range.
PA1EN:
0/20/30dB
PA2EN:
0/20/30dB
PGAM1:
+20dB TO -6dB
PGAM2:
+20dB TO 0dB
MIX
MIXADL
MIX
ADLEN
ADREN
ADCL
ADCR
AUTOMATIC
GAIN
CONTROL
AVLG: 0/6/
12/18dB
AVL:0dB
TO -15dB
MODE1
SRMIX_
MODE
AVFLT
NOISE GATE
AUDIO/
VOICE
FILTERS
SAMPLE RATE
CONVERTER
AVRG: 0/6/
12/18dB
AVR:0dB
TO -15dB
Noise Gate
Since the AGC increases the levels of all signals below
a user-defined threshold, the noise floor is effectively
increased by 20dB. To counteract this, the noise gate
reduces the gain at low signal levels. Unlike typical noise
gates that completely silence the output below a defined
level, the noise gate in the IC applies downward expansion. The noise gate attenuates the output at a rate of
1dB for each 2dB the signal is below the threshold with a
maximum attenuation of 12dB.
The noise gate can be used in conjunction with the AGC
or on its own. When the AGC is enabled, the noise gate
reduces the output level only when the AGC has set the
gain to the maximum setting. Figure 11 shows the gain
response resulting from using the AGC and noise gate.
AGC AND NOISE GATE
AMPLITUDE RESPONSE
0
-20
AGC AND NOISE GATE
-40
-60
-80
OUTPUT AMPLITUDE (dBFS)
-100
AGC ONLY
AGC AND NOISE
GATE DISABLED
NOISE GATE ONLY
MIXADR
-120
-120 0
INPUT AMPLITUDE (dBFS)
-20 -40 -60 -80 -100
Figure 10. Record Path Signal Processing Block Diagram Figure 11. AGC and Noise Gate Input vs. Output Gain
���������������������������������������������������������������� Maxim Integrated Products 73
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 6. Record Path Signal Processing Registers
REGISTER BIT NAME DESCRIPTION
Noise Gate Attenuation
Reports the current noise gate attenuation.
000 = 0dB
001 = 1dB
010 = 2dB
011 = 3dB to 5dB
100 = 6dB to 7dB
101 = 8dB to 9dB
110 = 10dB to 11dB
111 = 12dB
AGC Gain
Reports the current AGC gain setting.
VALUE GAIN (dB) VALUE GAIN (dB)
0x00 +20 0x0B +9
0x01 +19 0x0C +8
0x02 +18 0x0D +7
0x03 +17 0x0E +6
0x04 +16 0x0F +5
0x05 +15 0x10 +4
0x06 +14 0x11 +3
0x07 +13 0x12 +2
0x08 +12 0x13 +1
0x09 +11 0x14 to 0x1F 0
0x0A +10
AGC/Noise Gate Signal Source
Determines which ADC channel the AGC and noise gates analyze. Gain is adjusted on
both channels regardless of the AGCSRC setting.
0 = Left ADC output
1 = Maximum of either the left or right ADC output
AGC Release Time
Defined as the duration from start to finish of gain increase in the region shown in Figure
12.
000 = 78ms
001 = 156ms
010 = 312ms
011 = 625ms
100 = 1.25s
101 = 2.5s
110 = 5s
111 = 10s
0x01
0x3F
7
6
5
4
3
2
1
0
7 AGCSRC
6
5
4
NG
AGC
AGCRLS
MAX98089
���������������������������������������������������������������� Maxim Integrated Products 74
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 6. Record Path Signal Processing Registers (continued)
REGISTER BIT NAME DESCRIPTION
AGC Attack Time
3
AGCATK
2
0x3F
1
AGCHLD
0
7
6
ANTH
5
4
0x40
3
2
AGCTH
1
0
Defined as the time required to reduce gain by 63% of the total gain reduction (one time
constant of the exponential response). Attack times are longer for low AGC threshold
levels. See Figure 12 for details.
00 = 2ms
01 = 7.2ms
10 = 31ms
11 = 123ms
AGC Hold Time
The delay before the AGC release begins. The hold time counter starts whenever the signal drops below the AGC threshold and is reset by any signal that exceeds the threshold.
Set AGCHLD to enable the AGC circuit. See Figure 12 for details.
00 = AGC disabled
01 = 50ms
10 = 100ms
11 = 400ms
Noise Gate Threshold
Gain is reduced for signals below the threshold to quiet noise. The thresholds are relative
to the ADC’s full-scale output voltage.
VALUE
0x0 Noise gate disabled 0x8 -45
0x1 Reserved 0x9 -41
0x2 Reserved 0xA -38
0x3 -64 0xB -34
0x4 -62 0xC -30
0x5 -58 0xD -27
0x6 -53 0xE -22
0x7 -50 0xF -16
AGC Threshold
Gain is reduced when signals exceed the threshold to prevent clipping. The thresholds
are relative to the ADC’s full-scale voltage.
VALUE
0x0 -3 0x8 -11
0x1 -4 0x9 -12
0x2 -5 0xA -13
0x3 -6 0xB -14
0x4 -7 0xC -15
0x5 -8 0xD -16
0x6 -9 0xE -17
0x7 -10 0xF -18
THRESHOLD
(dBFS)
THRESHOLD
(dBFS)
VALUE
VALUE
MAX98089
THRESHOLD
(dBFS)
THRESHOLD
(dBFS)
���������������������������������������������������������������� Maxim Integrated Products 75
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Figure 12. AGC Timing
ATTACK TIME
HOLD TIME RELEASE TIME
The IC includes separate digital level control for the left
and right ADC outputs (Figure 13). To optimize dynamic
range, use analog gain to adjust the signal level and set
NOISE GATE
ADLEN
ADCL
AUTOMATIC
GAIN
CONTROL
MODE1
AVFLT
AVLG: 0/6/
12/18dB
AVL:0dB
TO -15dB
SRMIX_
MODE
AUDIO/
VOICE
FILTERS
AVRG: 0/6/
12/18dB
AVR:0dB
TO -15dB
SAMPLE RATE
CONVERTER
ADC Record Level Control
ADCR
ADREN
Figure 13. ADC Record Level Control Block Diagram
���������������������������������������������������������������� Maxim Integrated Products 76
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 7. ADC Record Level Control Register
REGISTER BIT NAME DESCRIPTION
Left/Right ADC Gain
00 = 0dB
01 = 6dB
10 = 12dB
11 = 18dB
Left/Right ADC Level
VALUE GAIN (dB) VALUE GAIN (dB)
0x0 +3 0x8 -5
0x1 +2 0x9 -6
0x2 +1 0xA -7
0x3 0 0xB -8
0x4 -1 0xC -9
0x5 -2 0xD -10
0x6 -3 0xE -11
0x7 -4 0xF -12
0x33/0x34
5
4
3
2
1
0
AVLG/AVRG
AVL/AVR
MAX98089
the digital level control to 0dB whenever possible. Digital
level control is primarily used when adjusting the record
level for digital microphones.
Sidetone
DVST:
0dB TO -60dB
ADLEN
ADREN
ADCL
ADCR
AUTOMATIC
GAIN
CONTROL
SIDETONE
AVLG: 0/6/
12/18dB
AVL:0dB
TO -15dB
SRMIX_
MODE1
AVFLT
MODE
DSTS
NOISE GATE
AUDIO/
VOICE
FILTERS
SAMPLE RATE
CONVERTER
MIX
AVRG: 0/6/
12/18dB
AVR:0dB
TO -15dB
Enable sidetone during full-duplex operation to add a
low-level copy of the recorded audio signal to the playback audio signal (Figure 14). Sidetone is commonly
used in telephony to allow the speaker to hear himself
speak, providing a more natural user experience. The
DV1G:
0/6/12/18dB
+
MULTI BAND ALC
DVEQ1:
0dB TO -15dB
5-BAND
PARAMETRIC
EQ
EQ1EN EQ2EN
EXCURSION LIMITER
5-BAND
PARAMETRIC
EQ
DV2:
0dB TO -15dB
DV1:
0dB TO -15dB
DVEQ2:
0dB TO -15dB
DCB2
AUDIO/
FILTERS
AUDIO/
VOICE
FILTERS
MODE1
DVFLT
MIX
MIXDAL
MIX
MIXDAR
DACL
DALEN
DACR
DAREN
Figure 14. Sidetone Block Diagram
���������������������������������������������������������������� Maxim Integrated Products 77
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 8. Sidetone Register
REGISTER BIT NAME DESCRIPTION
Sidetone Source
Selects which ADC output is fed back as sidetone. When mixing the left and right ADC
outputs, each is attenuated by 6dB to prevent full-scale signals from clipping.
00 = Sidetone disabled
01 = Left ADC
10 = Right ADC
11 = Left + Right ADC
Sidetone Level
Adjusts the sidetone signal level. All levels are referenced to the ADC’s full-scale output.
VALUE LEVEL (dB) VALUE LEVEL (dB)
0x00 Sidetone disabled 0x10 -30.5
0x01 -0.5 0x11 -32.5
0x02 -2.5 0x12 -34.5
0x03 -4.5 0x13 -36.5
0x04 -6.5 0x14 -38.5
0x05 -8.5 0x15 -40.5
0x06 -10.5 0x16 -42.5
0x07 -12.5 0x17 -44.5
0x08 -14.5 0x18 -46.5
0x09 -16.5 0x19 -48.5
0x0A -18.5 0x1A -50.5
0x0B -20.5 0x1B -52.5
0x0C -22.5 0x1C -54.5
0x0D -24.5 0x1D -56.6
0x0E -26.5 0x1E -58.5
0x0F -28.5 0x1F -60.5
0x2E
7
DSTS
6
4
3
2
1
0
DVST
MAX98089
IC implements sidetone digitally. Doing so helps prevent
unwanted feedback into the playback signal path and
better matches the playback audio signal.
Digital Audio Interfaces
The IC includes two separate playback signal paths and
one record signal path. Digital audio interface 1 (DAI1)
is used to transmit the recorded stereo audio signal and
receive a stereo audio signal for playback. Digital audio
interface 2 (DAI2) is used to receive a second stereo
audio signal. Use DAI1 for all full-duplex operations and
for all voice signals. Use DAI2 for music and to mix two
playback audio signals. The digital audio interfaces are
separate from the audio ports to enable either interface
to communicate with any external device connected to
either audio port.
���������������������������������������������������������������� Maxim Integrated Products 78
Each audio interface can be configured in a variety of for-
2
mats including left justified, I
S, PCM, and time division
multiplexed (TDM). TDM mode supports up to 4 mono
audio slots in each frame. The IC can use up to 2 mono
slots per interface, leaving the remaining two slots available for another device. Table 9 shows how to configure
the device for common digital audio formats. Figures 16
and 17 show examples of common audio formats. By
default, SDOUTS1 and SDOUTS2 are set high impedance when the IC is not outputting data to facilitate sharing the bus. Configure the interface in TDM mode using
only slot 1 to transmit and receive mono PCM voice data.
The IC’s digital audio interfaces support both ADC to DAC
loop-through and digital loopback. Loop-through allows
the signal converted by the ADC to be routed to the DAC
for playback. The signal is routed from the record path to
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
the playback path in the digital audio interface to allow
the IC’s full complement of digital signal processing to
be used. Loopback allows digital data input to either
SDINS1 or SDINS2 to be routed from one interface to the
other for output on SDOUTS2 or SDOUTS1. Both inter-
BCLKS1
LRCLKS1 SDOUTS1 SDINS1 DVDDS1 BCLKS2 LRCLKS2 SDOUTS2 SDINS2 DVDDS2
SEL1 SEL2
SDIN1
HIZOFF1
SDOEN1
DATA
INPUT
DAI1
MAS1
BCLK1
BIT
CLOCK
LRCLK1
FRAME
CLOCK
SDOUT1
MAS1
DATA
OUTPUT
faces must be configured for the same sample rate, but
the interface format need not be the same. This allows
the IC to route audio data from one device to another,
converting the data format as needed. Figure 15 shows
the available digital signal routing options.
BCLK2
DAI2
SDIEN1 SDIEN2
MAS2
BIT
CLOCK
LRCLK2
FRAME
CLOCK
SDOUT2
MAS2
DATA
OUTPUT
SDIN2
HIZOFF2
SDOEN2
DATA
INPUT
LBEN1
LBEN2
MUX
+
LTEN1
DAI1
RECORD PATH
Figure 15. Digital Audio Signal Routing
Table 9. Common Digital Audio Formats
MODE WCI1/WCI2 BCI1/BCI2 DLY1/DLY2 TDM1/TDM2 SLOTL1/SLOTL2 SLOTR1/SLOTR2
Left Justified 1 0 0 0 X X
2
S 0 0 1 0 X X
I
PCM X 1 X 1 0 0
TDM X 1 X 1 Set as desired
X = Don’t care.
���������������������������������������������������������������� Maxim Integrated Products 79
DAI1
PLAYBACK PATH
DAI2
PLAYBACK PATH
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 10. Digital Audio Interface Registers
REGISTER BIT NAME DESCRIPTION
DAI1/DAI2 Master Mode
In master mode, DAI1/DAI2 outputs LRCLK and BCLK. In slave mode, DAI1/DAI2 ac-
7 MAS1/MAS2
6 WCI1/WCI2
5 BCI1/BCI2
0x14/0x1C
4 DLY1/DLY2
2 TDM1/TDM2
1 FSW1/FSW2
0 WS1/WS2
cept LRCLK and BCLK as inputs.
0 = Slave mode
1 = Master mode
DAI1/DAI2 Word Clock Invert
TDM1/TDM2 = 0:
0 = Left-channel data is transmitted while LRCLK is low.
1 = Right-channel data is transmitted while LRCLK is low.
TDM1/TDM2 = 1:
Always set WCI = 0.
DAI1/DAI2 Bit Clock Invert
BCI1/BCI2 must be set to 1 when TDM1/TDM2 = 1.
0 = SDIN is accepted on the rising edge of BCLK.
SDOUT is valid on the rising edge of BCLK.
1 = SDIN is accepted on the falling edge of BCLK.
SDOUT is valid on the falling edge of BCLK.
Master Mode:
0 = LRCLK transitions on the falling edge of BCLK.
1 = LRCLK transitions on the rising edge of BCLK.
DAI1/DAI2 Data Delay
DLY1/DLY2 has no effect when TDM1/TDM2 = 1.
0 = The most significant data bit is clocked on the first active BCLK edge after an
LRCLK transition.
1 = The most significant data bit is clocked on the second active BCLK edge after an
LRCLK transition.
DAI1/DAI2 Time-Division Multiplex Mode (TDM Mode)
Set TDM1/TDM2 when communicating with devices that use a frame synchronization
pulse on LRCLK instead of a square wave.
0 = Disabled
1 = Enabled (BCI1/BCI2 must be set to 1)
DAI1/DAI2 Wide Frame Sync Pulse
Increases the width of the frame sync pulse to the full data width when TDM1/TDM2 =
1. FSW1/FSW2 has no effect when TDM1/TDM2 = 0.
0 = Disabled
1 = Enabled
DAI1/DAI2 Audio Data Bit Depth
Determines the maximum bit depth of audio being transmitted and received. Data is
always 16 bit when TDM1/TMD2 = 0.
0 = 16 bits
1 = 24 bits
MAX98089
���������������������������������������������������������������� Maxim Integrated Products 80
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 10. Digital Audio Interface Registers (continued)
REGISTER BIT NAME DESCRIPTION
ADC Oversampling Ratio
Use the higher setting for maximum performance. Use the lower setting for reduced
power consumption at the expense of performance.
00 = 96x
01 = 64x
10 = Reserved
11 = Reserved
DAC Oversample Clock (Select PCLK/2 for higher performance. Select PCLK/4 for
lower power consumption.)
1 = DAC input clock = PCLK/2
0 = DAC input clock = PCLK/4
DAI1/DAI2 BCLK Output Frequency
When operating in master mode, BSEL1/BSEL2 set the frequency of BCLK. When operating in slave mode, BSEL1/BSEL2 have no effect. Select the lowest BCLK frequency
that clocks all data input to the DAC and output by the ADC.
000 = BCLK disabled
001 = 64 x LRCLK
010 = 48 x LRCLK
011 = 128 x LRCLK (invalid for DHF1/DHF2 = 1)
100 = PCLK/2
101 = PCLK/4
110 = PCLK/8
111 = PCLK/16
DAI1/DAI2 Audio Port Selector
Selects which port is used by DAI1/DAI2.
00 = None
01 = Port S1
10 = Port S2
11 = Reserved
DAI1 Digital Loopthrough
Connects the output of the record signal path to the input of the playback path. Data
input to DAI1 from an external device is mixed with the recorded audio signal.
0 = Disabled
1 = Enabled
DAI1/DAI2 Digital Audio Interface Loopback
LBEN1 routes the digital audio input to DAI1 back out on DAI2. LBEN2 routes the digital
audio input to DAI2 back out on DAI1. Selecting LBEN2 disables the ADC output data.
0 = Disabled
1 = Enabled
0x15/0x1D
0x16/0x1E
7
OSR1
6
DAC_OSR1/
5
DAC_OSR2
2
1
0
7
6
5 LTEN1
4
BSEL1/
BSEL2
SEL1/SEL2
LBEN1/
LBEN2
MAX98089
DAI1/DAI2 DAC Mono Mix
Mixes the left and right digital input to mono and routes the combined signal to the left
3
���������������������������������������������������������������� Maxim Integrated Products 81
DMONO1/
DMONO2
and right playback paths. The left and right input data is attenuated by 6dB prior to the
mono mix.
0 = Disabled
1 = Enabled
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 10. Digital Audio Interface Registers (continued)
REGISTER BIT NAME DESCRIPTION
Disable DA1/DAI2 Output High-Impedance Mode
Normally SDOUT is set high impedance between data words. Set HIZOFF1/HIZOFF2 to
force a level on SDOUT at all times.
0 = Disabled
1 = Enabled
DAI1/DAI2 Record Path Output Enable
DAI2 outputs data only if LBEN1 = 1.
0 = Disabled
1 = Enabled
DAI1/DAI2 Playback Path Input Enable
0 = Disabled
1 = Enabled
TDM Left Time Slot
Selects which of the four slots is used for left data on DAI1/DAI2. If the same slot is
selected for left and right audio, left audio is placed in the slot.
00 = Slot 1
01 = Slot 2
10 = Slot 3
11 = Slot 4
TDM Right Time Slot
Selects which of the four slots is used for right data on DAI1/DAI2. If the same slot is
selected for left and right audio, left audio is placed in the slot.
00 = Slot 1
01 = Slot 2
10 = Slot 3
11 = Slot 4
TDM Slot Delay
Adds 1 BCLK cycle delay to the data in the specified TDM slot.
1xxx = Slot 4 delayed
x1xx = Slot 3 delayed
xx1x = Slot 2 delayed
xxx1 = Slot 1 delayed
0x16/0x1E
0x17/0x1F
2
1
0
7
6
5
4
3
2
1
0
HIZOFF1/
HIZOFF2
SDOEN1/
SDOEN2
SDIEN1/
SDIEN2
SLOTL1/
SLOTL2
SLOTR1/
SLOTR2
SLOTDLY1/
SLOTDLY2
MAX98089
���������������������������������������������������������������� Maxim Integrated Products 82
Low-Power, Stereo Audio Codec
with FlexSound Technology
WCI_ = 0, BCI_ = 0, DLY_ = 0, TDM_ = 0, FSW_ = 0, WS_ = 0, HIZOFF_ = 1, SLOTL_ = 0, SLOTR_ = 0
MAX98089
LRCLK
SDOUT
BCLK
SDIN
LRCLK
SDOUT
BCLK
SDIN
LRCLK
SDOUT
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
WCI_ = 1, BCI_ = 0, DLY_ = 0, TDM_ = 0, FSW_ = 0, WS_ = 0, HIZOFF_ = 1, SLOTL_ = 0, SLOTR_ = 0
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
WCI_ = 0, BCI_ = 1, DLY_ = 0, TDM_ = 0, FSW_ = 0, WS_ = 0, HIZOFF_ = 1, SL
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
LEFT
LEFT
LEFT
OTL_ =
RIGHT
RIGHT
0, SLOTR_ = 0
RIGHT
BCLK
SDIN
LRCLK
SDOUT
BCLK
SDIN
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
WCI_ = 0, BCI_ = 0, DLY_ = 1, TDM_ = 0, FSW_ = 0, WS_ = 0, HIZOFF_ = 1, SLOTL_ = 0, SLOTR_ = 0
LEFT
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Figure 16. Non-TDM Data Format Examples
���������������������������������������������������������������� Maxim Integrated Products 83
RIGHT
Low-Power, Stereo Audio Codec
WCI_ = 0, BCI_ = 1, DLY_ = 0, TDM_ = 1, FSW_ = 0, WS_ = 0, HIZOFF_ = 0, SLOTL_ = 0, SLOTR_ = 1
LRCLK
MAX98089
with FlexSound Technology
HI-Z
SDOUT
BCLK
SDIN
LRCLK
SDOUT
BCLK
SDIN
LRCLK
SDOUT
BCLK
SDIN
L15 L14 L13 L12 L11 L10 L9 L8 L7 L6 L5 L4 L3 L2 L1 L0 R15 R14 R13 R12 R11 R10 R9 R8 R7 R6 R5 R4 R3 R2 R1 R0
L15 L14 L13 L12 L11 L10 L9 L8 L7 L6 L5 L4 L3 L2 L1 L0 R15 R14 R13 R12 R11 R10 R9 R8 R7 R6 R5 R4 R3 R2 R1 R0
WCI_ = 0, BCI_ = 1, DLY_ = 0, TDM_ = 1, FSW_ = 1, WS_ = 0, HIZOFF_ = 0, SLOTL_ = 0, SLOTR_ = 1
HI-Z
L15 L14 L13 L12 L11 L10 L9 L8 L7 L6 L5 L4 L3 L2 L1 L0 R15 R14 R13 R12 R11 R10 R9 R8 R7 R6 R5 R4 R3 R2 R1 R0
L15 L14 L13 L12 L11 L10 L9 L8 L7 L6 L5 L4 L3 L2 L1 L0 R15 R14 R13 R12 R11 R10 R9 R8 R7 R6 R5 R4 R3 R2 R1 R0
WCI_ = 0, BCI_ = 1, DLY_ = 0, TDM_ = 1, FSW_ = 0, WS_ = 0, HIZOFF_ = 1, SLOTL_ = 0, SLOTR_ = 1
L15 L14 L13 L12 L11 L10 L9 L8 L7 L6 L5 L4 L3 L2 L1 L0 R15 R14 R13 R12 R11 R10 R9 R8 R7 R6 R5 R4 R3 R2 R1 R0
L15 L14 L13 L12 L11 L10 L9 L8 L7 L6 L5 L4 L3 L2 L1 L0 R15 R14 R13 R12 R11 R10 R9 R8 R7 R6 R5 R4 R3 R2 R1 R0
HI-Z
HI-Z
WCI_ = 0, BCI_ = 1, DLY_ = 0, TDM_ = 1, FSW_ = 0, WS_ = 0, HIZOFF_ = 0, SLOTL_ = 2, SLOTR_ = 3
LRCLK
SDOUT
BCLK
SDIN
LRCLK
SDOUT
BCLK
SDIN
HI-Z
32 CYCLES
WCI_ = 0, BCI_ = 1, DLY_ = 0, TDM_ = 1, FSW_ = 0, WS_ = 0, HIZOFF_ = 0, SLOTL_ = 0, SLOTR_ = 1
HI-Z
L L L L L L L L R R R R R R R R
HI-Z
L L L L L L L L R R R R R R R R
L15 L14 L13 L12 L11 L10 L9 L8 L7 L6 L5 L4 L3 L2 L1 L0 R15 R14 R13 R12 R11 R10 R9 R8 R7 R6 R5 R4 R3 R2 R1 R0
L15 L14 L13 L12 L11 L10 L9 L8 L7 L6 L5 L4 L3 L2 L1 L0 R15 R14 R13 R12 R11 R10 R9 R8 R7 R6 R5 R4 R3 R2 R1 R0
16 CYCLES 16 CYCLES 16 CYCLES 16 CYCLES
Figure 17. TDM Mode Data Format Examples
���������������������������������������������������������������� Maxim Integrated Products 84
HI-Z
HI-Z
Low-Power, Stereo Audio Codec
with FlexSound Technology
Clock Control
The digital signal paths in the IC require a master clock
(MCLK) between 10MHz and 60MHz to function. The
MAX98089 requires an internal clock between 10MHz
and 20MHz. A prescaler divides MCLK by 1, 2, or 4 to
create the internal clock (PCLK). PCLK is used to clock
all portions of the IC.
The MAX98089 includes two digital audio signal paths,
both capable of supporting any sample rate from 8kHz
to 96kHz. Each path is independently configured to allow
different sample rates. To accommodate a wide range
of system architectures, four main clocking modes are
supported:
PLL Mode: When operating in slave mode, enable the
U
PLL to lock onto any LRCLK input. This mode requires
the least configuration, but provides the lowest performance. Use this mode to simplify initial setup or
when normal mode and exact integer mode cannot
be used.
MAX98089
Normal Mode: This mode uses a 15-bit clock divider
U
to set the sample rate relative to PCLK. This allows
high flexibility in both the PCLK and LRCLK frequencies and can be used in either master or slave mode.
Exact Integer Mode (DAI1 only): In both master and
U
slave modes, common MCLK frequencies (12MHz,
13MHz, 16MHz, and 19.2MHz) can be programmed
to operate in exact integer mode for both 8kHz and
16kHz sample rates. In these modes, the MCLK and
LRCLK rates are selected by using the FREQ1 bits
instead of the NI, and PLL control bits.
DAC Low-Power Mode: This mode bypasses the
U
PLL for reduce power consumptions and uses fixed
counters to generate the clocks. The DAI__DAC_LP
bits override the other clock settings.
Table 11. Clock Control Registers
REGISTER BIT NAME DESCRIPTION
MCLK Prescaler
0x10
0x11/0x19
5
PSCLK
4
7
6
SR1/SR2
5
4
Generates PCLK, which is used by all internal circuitry.
00 = PCLK disabled
01 = 10MHz P MCLK P 20MHz (PCLK = MCLK)
10 = 20MHz P MCLK P 40MHz (PCLK = MCLK/2)
11 = 40MHz P MCLK P 60MHz (PCLK = MCLK/4)
DAI1/DAI2 Sample Rate
Used by the ALC to correctly set the dual-band crossover frequency and the excursion
limiter to set the predefined corner frequencies.
VALUE
0x0 Reserved 0x8 48
0x1 8 0x9 88.2
0x2 11.025 0xA 96
0x3 16 0xB Reserved
0x4 22.05 0xC Reserved
0x5 24 0xD Reserved
0x6 32 0xE Reserved
0x7 44.1 0xF Reserved
SAMPLE RATE
(kHz)
VALUE
SAMPLE RATE
(kHz)
���������������������������������������������������������������� Maxim Integrated Products 85
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 11. Clock Control Registers (continued)
REGISTER BIT NAME DESCRIPTION
Exact Integer Mode
Overrides PLL1 and NI1 and configures a specific PCLK to LRCLK ratio.
0x11
0x12/0x1A
0x13/0x1B
3
2
1
7 PLL1/PLL2
6
5
4
3
2
1
7
6
4
3
2
1
0 NI1[0]/NI2[0]
FREQ1
NI1/
NI2
VALUE SAMPLE RATE VALUE SAMPLE RATE
0x0 Disabled 0x8
0x1 Reserved 0x9
0x2 Reserved 0xA
0x3 Reserved 0xB
0x4 Reserved 0xC
0x5 Reserved 0xD
0x6 Reserved 0xE
0x7 Reserved 0xF
PLL Mode Enable (Slave Mode Only)
PLL1/PLL2 enables a digital PLL that locks on to the externally supplied LRCLK frequency and automatically sets the LRCLK divider (NI1/NI2).
0 = Disabled
1 = Enabled
Normal Mode LRCLK Divider
When PLL1/PLL2 = 0, the frequency of LRCLK is determined by NI1/NI2. See Table 12
for common NI values.
SAMPLE RATE DHF1/DHF2 NI1/NI2 FORMULA
8kHz P LRCLK P 48kHz
48kHz < LRCLK P 96kHz
= LRCLK frequency
f
LRCLK
f
= Prescaled MCLK frequency (PCLK)
PCLK
Rapid Lock Mode
Program NI1/NI2 to the nearest valid ratio and set NI1[0]/NI2[0] when PLL1/PLL2 = 1
to enable rapid lock mode. Normally, the PLL automatically calculates and dynamically
adjusts NI1/NI2. When rapid lock mode is properly configured, the PLL starting point is
much closer to the correct value, thus speeding up lock time. Wait one LRCLK period
after programming NI1/NI2 before setting PLL1/PLL2 = 1.
0 0
1 5
MAX98089
PCLK = 12MHz,
LRCLK = 8kHz
PCLK = 12MHz,
LRCLK = 16kHz
PCLK = 13MHz,
LRCLK = 8kHz
PCLK = 13MHz,
LRCLK = 16kHz
PCLK = 16MHz,
LRCLK = 8kHz
PCLK = 16MHz,
LRCLK = 16kHz
PCLK = 19.2MHz,
LRCLK = 8kHz
PCLK = 19.2MHz,
LRCLK = 16kHz
65,536 x 96 x f
NIf=
65,536 x 48 x f
NIf=
LRCLK
PCLK
LRCLK
PCLK
���������������������������������������������������������������� Maxim Integrated Products 86
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 11. Clock Control Registers (continued)
REGISTER BIT NAME DESCRIPTION
DAI� DAC Low Power Select.
These bits setup the clocks to be generated from fixed counters that bypass the PLL for
DAC low power mode.
VALUE SETTING
0x0
0x3
0x4
DAI2 DAC Input Dither Enable
DAC2DITHEN is recommended to be set when DAI2_DAC_LP = 0000.
0 = Disabled
1 = Enabled
DAI1 DAC Input Dither 1 Enable
DAC1DITHEN is recommended to be set when DAI1_DAC_LP = 0000.
0 = Disabled
1 = Enabled
DAI2 Clock Gen Module Enable
CGM1_EN has to be set along with CGM2_EN to enable the clock generation for the
DAI2 DAC playback path.
0 = Disabled
1 = Enabled
PLL derived
clock
PCLK = 128
x LRCLK
PCLK = 192
x LRCLK
PCLK = 256
x LRCLK
PCLK = 384
x LRCLK
PCLK = 768
x LRCLK
PCLK = 1152
x LRCLK
PCLK = 1536
x LRCLK
FILTER
SELECT
— 0x8
Audio 96kHz 0x9 Reserved —
Audio 96kHz 0xA Reserved —
Audio 48kHz 0xB Reserved —
Audio 48kHz 0xC Reserved —
Voice 0xD Reserved —
Voice 0xE Reserved —
Voice 0xF Reserved —
0x4F
0x50
7
6
DAI2_DAC_LP
5 0x1
4 0x2
3
DAI1_DAC_LP
2 0x5
1 0x6
0 0x7
3 DAC2DITHEN
2 DAC1DITHEN
1 CGM2_EN
MAX98089
VALUE SETTING
PCLK = 2304
x LRCLK
FILTER
SELECT
Voice
DAI1/Device Clock Gen Module Enable
CGM1_EN enables the device clock generation, and needs to be set for DAC playback
0 CGM1_EN
���������������������������������������������������������������� Maxim Integrated Products 87
or ADC record.
0 = Disabled
1 = Enabled
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 12. Common NI1/NI2 Values
LRCLK (kHz)
PCLK (MHz)
8 11.025 12 16 22.05 24 32 44.1 48 64 88.2 96
10
11
11.2896
12
12.288 1000
13
16
16.9344
18.432
20
13A9 1B18 1D7E 2752 3631 3AFB 4EA5 6C61 75F7 4EA5 6C61 75F7
11E0 18A2 1ACF 23BF 3144 359F 477E 6287 6B3E 477E 6287 6B3E
116A
1800
1A1F 22D4
1062 1694 1893 20C5 2D29 3127 4189 5A51 624E 4189 5A51 624E
160D
1800 2000
0F20 14D8 16AF 1E3F 29AF 2D5F 3C7F 535F 5ABE 3C7F 535F 5ABE
0C4A 10EF 126F 1893 21DE 24DD 3127 43BD 49BA 3127 43BD 49BA
0B9C
0AAB 0EB3
1000
116A 1738
1000
09D5 0D8C 0EBF 13A9 1B18 1D7E 2752 3631 3AFB 2752 3631 3AFB
Note: Values in bold are exact integers that provide maximum full-scale performance.
Sample Rate Converter
The sample rate conversion circuit allows for both sample rate conversion and mixing of asynchronous audio
data from DAI1 (SDIN1) and DAI2 (SDIN2). The resulting
DHF1/2 = 0 DHF1/2 = 1
3000
2C1A
2000
1555 1D66
343F 45A9
3000 4000
22D4 2E71
2000
2AAB 3ACD
audio can be output through DAI1 to either SDOUTS1 or
SDOUTS2. The sample rate converter can be enabled on
a per channel basis, allowing for one channel of DAI1 to
output microphone data while the other channel is outputting
sample rate converted data.
6000
5833
4000
MAX98089
687D 45A9
6000 4000
45A9 2E71
4000
2AAB 3ACD
6000
5833
4000
687D
6000
45A9
4000
AUTOMATIC
GAIN
CONTROL
ADLEN
ADCL
ADCR
ADREN
Figure 18. Sample Rate Converter
���������������������������������������������������������������� Maxim Integrated Products 88
SIDETONE
AVLG: 0/6/
12/18dB
AVL:0dB
TO -15dB
SRMIX_
MODE1
AVFLT
MIX
DSTS
NOISE GATE
AUDIO/
VOICE
FILTERS
SAMPLE RATE
CONVERTER
DVST:
0dB TO -60dB
AVRG: 0/6/
12/18dB
AVR:0dB
TO -15dB
DV1G:
0/6/12/18dB
+
MULTI BAND ALC
DVEQ1:
0dB TO -15dB
5-BAND
PARAMETRIC
EQ
EQ1EN EQ2EN
EXCURSION LIMITER
5-BAND
PARAMETRIC
EQ
DV2:
0dB TO -15dB
DV1:
0dB TO -15dB
DVEQ2:
0dB TO -15dB
DCB2
MODE1
DVFLT
AUDIO/
FILTERS
AUDIO/
VOICE
FILTERS
MIX
MIXDAL
MIX
MIXDAR
DACL
DALEN
DACR
DAREN
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 13. Sample Rate Converter Register
REGISTER BIT NAME DESCRIPTION
Sample Rate Mix Mode. Sets mixing configuration applied to the sample rate con-
4 SRMIX_MODE
3 SRMIX_ENL
0x21
2 SRMIX_ENR
1 SRC_ENL
0 SRC_ENR
verted channel(s).
0 = (DAI1 + DAI2)
1 = (DAI1 + DAI2)/2
Sample Rate Mix Enable. If enabled, mixes data on DAI1 and DAI2. If cleared, SCR
data source is DAI2 only.
0 = SRC mix disable
1 = SRC mix enable
Sample Rate Converter Enable. Select if the SCR is enabled on a per channel
basis.
0 = Sample rate converter disable
1 = Sample rate converter enable
MAX98089
Passband Filtering
Each digital signal path in the IC includes options for
defining the path bandwidth (Figure 19). The playback
and record paths connected to DAI1 support both voice
and music filtering while the playback path connected to
DAI2 supports music filtering only.
The voice IIR filters provide greater than 70dB stopband
attenuation at frequencies above f
/2 to reduce aliasing.
S
Three selectable highpass filters eliminate unwanted lowfrequency signals.
DVST:
0dB TO -60dB
ADLEN
ADREN
ADCL
ADCR
AUTOMATIC
GAIN
CONTROL
SIDETONE
AVLG: 0/6/
12/18dB
AVL:0dB
TO -15dB
SRMIX_
MODE1
AVFLT
MODE
DSTS
NOISE GATE
AUDIO/
VOICE
FILTERS
SAMPLE RATE
CONVERTER
MIX
AVRG: 0/6/
12/18dB
AVR:0dB
TO -15dB
Use music mode when processing high-fidelity audio
content. The music FIR filters reduce power consumption and are linear phase to maintain stereo imaging.
An optional DC-blocking filter is available to eliminate
unwanted DC offset.
In music mode, a second set of FIR filters are available to
support sample rates greater than 50kHz. The filters can
be independently selected for DAI1 and DAI2 and support both the playback and record audio paths.
DV1G:
0/6/12/18dB
+
MULTI BAND ALC
DVEQ1:
0dB TO -15dB
5-BAND
PARAMETRIC
EQ
EQ1EN EQ2EN
EXCURSION LIMITER
5-BAND
PARAMETRIC
EQ
DV2:
0dB TO -15dB
DV1:
0dB TO -15dB
DVEQ2:
0dB TO -15dB
DCB2
MODE1
DVFLT
AUDIO/
FILTERS
AUDIO/
VOICE
FILTERS
MIX
MIXDAL
MIX
MIXDAR
DACL
DALEN
DACR
DAREN
Figure 19. Digital Passband Filtering Block Diagram
���������������������������������������������������������������� Maxim Integrated Products 89
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 14. Passband Filtering Registers
REGISTER BIT NAME DESCRIPTION
DAI1 Passband Filtering Mode
0 = Voice filters
1 = Music filters (recommended for f
DAI1 ADC Highpass Filter Mode
MODE1 AVFLT1
0 See Table 15.
1
DAI1 High Sample Rate Mode
Selects the sample rate range.
0 = 8kHz P LRCLK P 48kHz
1 = 48kHz P LRCLK P 96kHz
DAI1 DAC Highpass Filter Mode
MODE1 DVFLT1
0 See Table 15.
DAI2 High Sample Rate Mode
Selects the sample rate range.
0 = 8kHz P LRCLK P 48kHz
1 = 48kHz < LRCLK P 96kHz
DAI2 DC Blocking Filter
Enables a DC-blocking filter on the DAI2 playback audio path.
0 = Disabled
1 = Enabled
> 24kHz)
S
0x18
0x20
7 MODE1
6
5
AVFLT1
4
3 DHF1
2
1
0 1
3 DHF2
0 DCB2
DVFLT1
MAX98089
Select a nonzero value to enable
the DC- blocking filter.
Select a nonzero value to enable the DCblocking filter.
���������������������������������������������������������������� Maxim Integrated Products 90
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 15. Voice Highpass Filters
AVFTL/DVFLT VALUE INTENDED SAMPLE RATE FILTER RESPONSE
000 N/A Disabled
10
0
-10
-20
MAX98089
001/011 16kHz/8kHz
010/100 16kHz/8kHz
-30
AMPLITUDE (dB)
-40
-50
-60
0 1000
FREQUENCY (Hz)
10
0
-10
-20
-30
AMPLITUDE (dB)
-40
-50
-60
0 1000
FREQUENCY (Hz)
10
0
-10
800 600 400 200
800 600 400 200
-20
101 8kHz to 48kHz
-30
AMPLITUDE (dB)
-40
-50
-60
0 1000
FREQUENCY (Hz)
110/111 N/A Reserved
���������������������������������������������������������������� Maxim Integrated Products 91
LRCLK = 48kHz
800 600 400 200
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Playback Path Signal Processing
The IC playback signal path includes automatic level
control (ALC) and a 5-band parametric equalizer (EQ)
(Figure 20). The DAI1 and DAI2 playback paths include
separate ALCs controlled by a single set of registers.
Two completely separate parametric EQs are included
for the DAI1 and DAI2 playback paths.
Automatic Level Control
The automatic level control (ALC) circuit ensures maximum signal amplitude without producing audible clipping. This is accomplished by a variable gain stage that
works on a sample by sample basis to increase the gain
up to 12dB. A look-ahead circuit determines if the next
sample exceeds full scale and reduces the gain so that
the sample is exactly full scale.
A programmable low signal threshold determines the
minimum signal amplitude that is amplified. Select a
threshold that prevents the amplification of background
noise. When the signal level drops below the low signal
threshold, the ALC reduces the gain to 0dB until the signal increases above the threshold. Figure 21 shows an
example of ALC input vs. output curves.
The ALC can optionally be configured in dual-band
mode. In this mode, the input signal is filtered into two
bands with a 5kHz center frequency. Each band is
routed through independent ALCs and then summed
together. In multiband mode, both bands use the same
parameters.
OUTPUT SIGNAL
(dBFS)
0
INPUT
SIGNAL
(dBFS)
OUTPUT SIGNAL
(dBFS)
0
LOW-LEVEL
THRESHOLD
ALC W ITH ALCTH ≠ 000
-12 0
DV1G:
0/6/12/18dB
+
MULTI BAND ALC
DVEQ1:
0dB TO -15dB
5-BAND
PARAMETRIC
EQ
EQ1EN EQ2EN
EXCURSION LIMITER
Figure 20. Playback Path Signal Processing Block Diagram
���������������������������������������������������������������� Maxim Integrated Products 92
5-BAND
PARAMETRIC
EQ
DV2:
0dB TO -15dB
DV1:
0dB TO -15dB
DVEQ2:
0dB TO -15dB
DCB2
MODE1
DVFLT
AUDIO/
FILTERS
AUDIO/
VOICE
FILTERS
MIX
MIXDAL
MIX
MIXDAR
DACL
DALEN
DACR
DAREN
OUTPUT SIGNAL
(dBFS)
0
LOW-LEVEL
THRESHOLD
LOW-LEVEL
THRESHOLD
-12 0
ALC W ITH ALCTH = 000
-12 0
ALC D ISABLED
Figure 21. ALC Input vs. Output Examples
INPUT
SIGNAL
(dBFS)
INPUT
SIGNAL
(dBFS)
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 16. Automatic Level Control Registers
REGISTER BIT NAME DESCRIPTION
ALC Enable
Enables ALC on both the DAI1 and DAI2 playback paths.
0 = Disabled
1 = Enabled
ALC and Excursion Limiter Release Time
Sets the release time for both the ALC and Excursion Limiter. See the Excursion Limiter
section for Excursion Limiter release times. ALC release time is defined as the time
required to adjust the gain from 12dB to 0dB.
VALUE ALC RELEASE TIME (s)
000 8
001 4
010 2
011 1
100 0.5
101 0.25
110 Reserved
111 Reserved
Multiband Enable
Enables dual-band processing with a 5kHz center frequency. SR1 and SR2 must be
configured properly to achieve the correct center frequency for each playback path.
0 = Single-band ALC
1 = Dual-band ALC
Low Signal Threshold
Selects the minimum signal level to be boosted by the ALC.
000 = -J dB (low-signal threshold disabled)
001 = -12dB
010 = -18dB
011 = -24dB
100 = -30dB
101 = -36dB
110 = -42dB
111 = -48dB
0x43
7 ALCEN
6
5
4
3 ALCMB
2
1
0
ALCRLS
ALCTH
MAX98089
Parametric Equalizer
The parametric EQ contains five independent biquad
filters with programmable gain, center frequency, and
bandwidth. Each biquad filter has a gain range of Q 12dB
and a center frequency range from 20Hz to 20kHz. Use a
filter Q less than that shown in Figure 22 to achieve ideal
frequency responses. Setting a higher Q results in nonideal frequency response. The biquad filters are series
connected, allowing a total gain of Q 60dB.
���������������������������������������������������������������� Maxim Integrated Products 93
1000
fs = 8kHz
100
10
1
MAXIMUM RECOMMENDED FILTER Q
0.1
100 100,000
Figure 22. Maximum Recommended Filter Q vs. Frequency
CENTER FREQUENCY (Hz)
fs = 48kHz
fs = 96kHz
10,000 1000
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Use the attenuator at the EQ’s input to avoid clipping
the signal. The attenuator can be programmed for fixed
attenuation or dynamic attenuation based on signal level.
If the dynamic EQ clip detection is enabled, the signal
The MAX98089 EV kit software includes a graphical interface for generating the EQ coefficients. The coefficients
are sample rate dependent and stored in registers 0x52
through 0xB5.
level from the EQ is fed back to the attenuator circuit to
determine the amount of gain reduction necessary to
avoid clipping.
Table 17. EQ Registers
REGISTER BIT NAME DESCRIPTION
DAI1/DAI2 EQ Clip Detection
Automatically controls the EQ attenuator to prevent clipping in the EQ.
0 = Enabled
1 = Disabled
DAI1/DAI2 EQ Attenuator
Provides attenuation to prevent clipping in the EQ when full-scale signals are
boosted. DVEQ1/DVEQ2 operates only when EQ1EN/EQ2EN = 1 and EQCLP1 /EQ-
CLP2 = 1.
VALUE GAIN (dB) VALUE GAIN (dB)
0x0 0 0x8 -8
0x1 -1 0x9 -9
0x2 -2 0xA -10
0x3 -3 0xB -11
0x4 -4 0xC -12
0x5 -5 0xD -13
0x6 -6 0xE -14
0x7 -7 0xF -15
See the Click-and-Pop Reduction section. 6
DAI2 EQ Enable
0 = Disabled
1 = Enabled
DAI1 EQ Enable
0 = Disabled
1 = Enabled
0x30/0x32
0x49
4
3
2
1
0
7
5
1 EQ2EN
0 EQ1EN
EQCLP1/
EQCLP2
DVEQ1/DVEQ2
VS2EN
VSEN
ZDEN
���������������������������������������������������������������� Maxim Integrated Products 94
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Playback Level Control
The IC includes separate digital level control for the DAI1
and DAI2 playback audio paths. The DAI1 signal path
DV1G:
0/6/12/18dB
+
MULTI BAND ALC
DVEQ1:
0dB TO -15dB
5-BAND
PARAMETRIC
EQ
Figure 23. Playback Level Control Block Diagram
EQ1EN EQ2EN
EXCURSION LIMITER
5-BAND
PARAMETRIC
EQ
DV2:
0dB TO -15dB
DV1:
0dB TO -15dB
allows boost when MODE1 = 0 and attenuation in any
mode. The DAI2 signal path allows attenuation only.
DVEQ2:
0dB TO -15dB
DACL
MIX
MIXDAL
MIX
MIXDAR
DALEN
DACR
DAREN
DCB2
MODE1
DVFLT
AUDIO/
FILTERS
AUDIO/
VOICE
FILTERS
Table 18. DAC Playback Level Control Register
REGISTER BIT NAME DESCRIPTION
DAI1/DAI2 Mute
0 = Disabled
1 = Enabled
DAI1 Voice Mode Gain
DV1G only applies when MODE1 = 0.
00 = 0dB
01 = 6dB
10 = 12dB
11 = 18dB
DAI1/DAI2 Attenuation
VALUE GAIN (dB) VALUE GAIN (dB)
0x0 0 0x8 -8
0x1 -1 0x9 -9
0x2 -2 0xA -10
0x3 -3 0xB -11
0x4 -4 0xC -12
0x5 -5 0xD -13
0x6 -6 0xE -14
0x7 -7 0xF -15
0x2F/0x31
7 DV1M/DV2M
5
DV1G
4
3
2
DV1/DV2
1
0
���������������������������������������������������������������� Maxim Integrated Products 95
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
DAC Input Mixers
The IC’s stereo DAC accepts input from two digital audio paths. The DAC mixer routes any audio path to the left and
right DACs (Figure 24).
DV1G:
0/6/12/18dB
+
MULTI BAND ALC
DVEQ1:
0dB TO -15dB
5-BAND
PARAMETRIC
EQ
EQ1EN EQ2EN
EXCURSION LIMITER
PARAMETRIC
5-BAND
EQ
DV2:
0dB TO -15dB
DV1:
0dB TO -15dB
DVEQ2:
0dB TO -15dB
DCB2
MODE1
DVFLT
AUDIO/
FILTERS
AUDIO/
VOICE
FILTERS
MIX
MIXDAL
MIX
MIXDAR
Figure 24. DAC Input Mixer Block Diagram
Table 19. DAC Input Mixer Register
REGISTER BIT NAME DESCRIPTION
0x22
7
6
5
MIXDAL
4
3
2
1
MIXDAR
0
Left DAC Input Mixer
1xxx = DAI1 left channel
x1xx = DAI1 right channel
xx1x = DAI2 left channel
xxx1 = DAI2 right channel
Right DAC Input Mixer
1xxx = DAI1 left channel
x1xx = DAI1 right channel
xx1x = DAI2 left channel
xxx1 = DAI2 right channel
DACL
DALEN
DACR
DAREN
���������������������������������������������������������������� Maxim Integrated Products 96
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Receiver Amplifier
The IC includes a single differential receiver amplifier. The receiver amplifier is designed to drive a 32I earpiece
speaker. In cases where a single transducer is used for the loudspeaker and receiver, use the SPKBYP switch to route
the receiver amplifier output to the left speaker outputs. The receiver amplifier can also be configured as stereo singleended line outputs using the I
2
C interface.
DACL
DALEN
DACR
DAREN
MIX
MIXRECL
MIX
MIXRECR
LINEMODE
RECVOLL:
+8dB TO -62dB
RECVOLR:
+8dB TO -62dB
+6dB
SPLEN
0dB
RECLEN
0dB
RECREN
RECBYP
RECP/
LOUTL/
RXINP
RECN/
LOUTR/
RXINN
SPKBYP
SPKLP
SPKLN
Figure 25. Receiver Amplifier Block Diagram
���������������������������������������������������������������� Maxim Integrated Products 97
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Receiver Output Mixer
The IC’s receiver amplifier accepts input from the stereo DAC, the line inputs (single-ended or differential), and the MIC
inputs. Configure the mixer to mix any combination of the available sources. When more than one signal is selected, the
mixed signal can be configured to attenuate 6dB, 9dB, or 12dB.
Table 20. Receiver Output Mixer Register
REGISTER BIT NAME DESCRIPTION
0x28
0x29
0x2A
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7 LINE_MODE
3
2
1
0
0
MIXRECL
MIXRECR
MIXRECR
_GAIN
MIXRECL
_GAIN
Left Receiver Output Mixer
1xxxxxxx = Right DAC
x1xxxxxx = MIC2
xx1xxxxx = MIC1
xxx1xxxx = INB2 (INBDIFF = 0) or INB2-INB1 (INADIFF = 1)
xxxx1xxx = INB1
xxxxx1xx = INA2 (INADIFF = 0) or INA2-INA1 (INADIFF = 1)
xxxxxx1x = INA1
xxxxxxx1 = Left DAC
Right Receiver Output Mixer
1xxxxxxx = Left DAC
x1xxxxxx = MIC2
xx1xxxxx = MIC1
xxx1xxxx = INB2 (INBDIFF = 0) or INB2-INB1 (INBDIFF = 1)
xxxx1xxx = INA1
xxxxx1xx = INA2 (INADIFF = 0) or INA2-INA1 (INADIFF = 1)
xxxxxx1x = INA1
xxxxxxx1 = Right DAC
Receiver Output Mode . Configures receive path output mode between BTL and
stereo line output.
0 = BTL
1 = Stereo line output
Right Receiver Mixer Gain Select
00 = 0dB
01 = -6dB
10 = -9dB
11 = -12dB
Left Receiver Mixer Gain Select
00 = 0dB
01 = -6dB
10 = -9dB
11 = -12dB
���������������������������������������������������������������� Maxim Integrated Products 98
Low-Power, Stereo Audio Codec
with FlexSound Technology
Receiver Output Volume
Table 21. Receiver Output Level Register
REGISTER BIT NAME DESCRIPTION
Receiver Output Mute
0 = Disabled
1 = Enabled
Receiver Output Volume Level
VALUE VOLUME (dB) VALUE VOLUME (dB)
0x00 -62 0x10 -10
0x01 -58 0x11 -8
0x02 -54 0x12 -6
0x03 -50 0x13 -4
0x04 -46 0x14 -2
0x05 -42 0x15 0
0x06 -38 0x16 +1
0x07 -35 0x17 +2
0x08 -32 0x18 +3
0x09 -29 0x19 +4
0x0A -26 0x1A +5
0x0B -23 0x1B +6
0x0C -20 0x1C +6.5
0x0D -17 0x1D +7
0x0E -14 0x1E +7.5
0x0F -12 0x1F +8
0x3B/0x3C
7
4
3
2
1
0
RECLM/
RECRM
RECVOLL/
RECVOLR
MAX98089
���������������������������������������������������������������� Maxim Integrated Products 99
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Speaker Amplifiers
The IC integrates a stereo filterless Class D amplifier that
offers much higher efficiency than Class AB without the
typical disadvantages.
The high efficiency of a Class D amplifier is due to the
switching operation of the output stage transistors. In a
Class D amplifier, the output transistors act as current
steering switches and consume negligible additional
power. Any power loss associated with the Class D out-
2
put stage is mostly due to the I
R loss of the MOSFET
on-resistance, and quiescent current overhead.
SPVOLL:
+8dB TO -62dB
MIX
DACL
DALEN
DACR
DAREN
MIXSPL
MIX
MIXSPR
SPVOLR:
+8dB TO -62dB
The theoretical best efficiency of a linear amplifier is 78%,
however, that efficiency is only exhibited at peak output
power. Under normal operating levels (typical music
reproduction levels), efficiency falls below 30%, whereas
the IC’s Class D amplifier still exhibits 80% efficiency
under the same conditions.
Traditional Class D amplifiers require the use of external LC filters or shielding to meet EN55022B and FCC
electromagnetic-interference (EMI) regulation standards.
Maxim’s patented active emissions limiting edge-rate
control circuitry reduces EMI emissions, allowing operation without any output filtering in typical applications.
SPKLVDD
SPKLP
+6dB
SPLEN
POWER/
DISTORTION LIMITER
+6dB
SPREN
SPKLN
SPKLGND
SPKRVDD
SPKRP
SPKRN
SPKRGND
Figure 26. Speaker Amplifier Path Block Diagram
��������������������������������������������������������������� Maxim Integrated Products 100