Rainbow Electronics MAX98088 User Manual

19-5335; Rev 0; 6/10

EVALUATION KIT

AVAILABLE

with FLEXSOUND Technology

General Description

The MAX98088 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.

Three differential analog microphone inputs are available as well as support for two PDM digital microphones. Integrated switches allow 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 -40NC to +85NC extended temperature range.

FLEXSOUND is a trademark of Maxim Integrated Products, Inc.

Stereo Audio Codec

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

950mW/Channel (8I, V

Efficient Class H Headphone Amplifier

S

Differential Receiver Amplifier/Stereo Line Outputs

S

2 Stereo Single-Ended/Mono Differential Line

S

SPKVDD_

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)

Ordering Information

PART TEMP RANGE PIN-PACKAGE

MAX98088EWY+ -40NC to +85NC 63 WLP

+Denotes lead(Pb)-free/RoHS-compliant package.

< 96kHz)

S

< 96kHz)

S

= 4.2V)

MAX98088

Simplified Block Diagram

I2C

CONTROL

ADC

MIX

ADC

LINEIN A1

LINEIN A2

LINEIN B1

LINEIN B2

DIGITAL MICROPHONE

+

INPUT

_______________________________________________________________ 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.

2

I2S/PCM

S/PCM

I

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

MAX98088

AUDIO

INTERFACE

RECEIVER/LINEOUT AMPS

DAC

SPEAKER AMP

MIX

HEADPHONE AMP

Stereo Audio Codec with FLEXSOUND Technology

TABLE OF CONTENTS

General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Simplified Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Functional Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

MAX98088

Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Digital Input/Output Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Input Clock Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Audio Interface Timing Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Digital Microphone Timing Characterstics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2

C Timing Characterstics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

I

Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Typical Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Microphone to ADC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Line to ADC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Line In Pin Direct to ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Digital Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Analog Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

DAC to Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Line to Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

DAC to Line Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Line to Line Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

DAC to Speaker. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Line to Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

DAC to Headphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Lint to Headphone. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Speaker Bypass Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Detailed Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

2

C Slave Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

I

Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

Microphone Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Line Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

ADC Input Mixers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

2

Stereo Audio Codec

with FLEXSOUND Technology

TABLE OF CONTENTS (continued)

Record Path Signal Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Microphone AGC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

Noise Gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

ADC Record Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Sidetone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

Digital Audio Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Clock Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Sample Rate Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Passband Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Playback Path Signal Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Automatic Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Parametric Equalizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Playback Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

DAC Input Mixers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Receiver Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

Receiver Output Mixer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

Receiver Output Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Speaker Amplifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96

Speaker Output Mixers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Speaker Amplifier Signal Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98

Excursion Limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98

Speaker Output Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Power Limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Distortion Limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Headphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

DirectDrive Headphone Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Charge Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Class H Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

Headphone Output Mixers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Headphone Output Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Output Bypass Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Click-and-Pop Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Jack Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Jack Detection and Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

MAX98088

3

Stereo Audio Codec with FLEXSOUND Technology

TABLE OF CONTENTS (continued)

Battery Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Device Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

2

C Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

I

Bit Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

START and STOP Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

MAX98088

Early STOP Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Device Revision. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Slave Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Write Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Read Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Application Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

Typical Operating Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Filterless Class D Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

RF Susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Startup/Shutdown Sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Component Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Optional Ferrite Bead Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Input Capacitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Charge-Pump Capacitor Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Charge-Pump Flying Capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Charge-Pump Holding Capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Unused Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Recommended PCB Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Supply Bypassing, Layout, and Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

WLP Applications Information (MAX98088) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Package Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

4

Stereo Audio Codec

with FLEXSOUND Technology

Functional Diagram

MAX98088

F6

REF G6

REG

BIAS

MAX98088

G5

AVDD

G4

DVDD

SDIN2

DATA

INPUT

HIZOFF2

SDOUT2

DATA

OUTPUT

BCLK2

SDIN1

BCLK1

LRCLK2

SDOUT1

LRCLK1

MAS2

FRAME

CLOCK

BIT

CLOCK

MAS2

DAI2

DATA

INPUT

HIZOFF1

DATA

OUTPUT

MAS1

FRAME

CLOCK

BIT

CLOCK

MAS1

DAI1

PORT S2PORT S1

LRCLKS2 SDOUTS2 SDINS2 DVDDS2

LRCLKS1 SDOUTS1 SDINS1 DVDDS1 BCLKS2

D1 D4 D2 E4 E1 F2 F3 G1 G3 G2

BCLKS1

MCLK

SEL1 SEL2

RECP/

RECVOLL:

LBEN1

MUX

LOUTL/

+8dB TO -62dB

LBEN2

RXINPA6RECP/

RECBYP

RECLEN

0dB

RECVOLR:

MIX

MIXRECL

DV1G:

0/6/12/18dB

+

LTEN1

DVST:

LOUTR/

+8dB TO -62dB

TM

FLEXSOUND

0dB TO -60dB

CLOCK

RXINP B6

0dB

MIX

TECHNOLOGY

+

MIX

SIDETONE

CONTROL

SPKBYP

RECREN

LINEMODE

MULTI BAND ALC

DSTS

A3, B3

SPKLVDD

SPVOLL:

MIXRECR

DVEQ2:

DVEQ1:

A4, B4

A5, B5

SPKLP

SPKLN

+6dB

+8dB TO -62dB

MIX

0dB TO -15dB

5-BAND

0dB TO -15dB

5-BAND

NOISE GATE

GAIN

AUTOMATIC

PARAMETRIC

CONTROL

SPLEN

EQ

C4, C5

SPKLGND

MIXSPL

EQ1EN EQ2EN

AUDIO/

MODE1

C9

C8

+8dB TO -62dB

MIXSPR

CONVERTER

MODE

MIXHPL_

AUDIO/

HPVOLL:

+3dB TO -67dB

PATH SEL

MIX

VOICE

FILTERS

DV1:

ADCR

MIX

HPL

DACR

DAREN

MIX

MODE1

DVFLT

0dB TO -15dB

ADREN

HPLEN

MIXDAR

MIXADR

MIXHPL

HPSNS

MIXHPR_

HPVOR:

+3dB TO -67dB

PATH SEL

MIX

SPKRP C1, C2

SPKRN A1, B1

SPKRVDD C3, D3

SPKRGND A2, B2

POWER/

DISTORTION LIMITER

SPREN

+6dB

SPVOLR:

MIX

DACL

DALEN

MIX

MIXDAL

AUDIO/

FILTERS

DCB2

DV2:

0dB TO -15dB

EXCURSION LIMITER

AVRG: 0/6/

12/18dB

AVR:0dB

TO -15dB

VOICE

FILTERS

SAMPLE RATE

AVFLT

12/18dB

AVLG: 0/6/

ADLEN

AVL:0dB

ADCL

MIX

TO -15dB

SRMIX_

MIXADL

A9

HPR D9

PVDD A7

HPGND

B7B8A8

HPREN

HPVSS

PUMP

CHARGE

B9

HPVDD C1N C1P

MIXHPR

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

E5F5F4 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

5

Stereo Audio Codec with FLEXSOUND Technology

ABSOLUTE MAXIMUM RATINGS

(Voltages with respect to AGND.)

DVDD, AVDD, HPVDD .........................................-0.3V to +2.2V

SPKLVDD, SPKRVDD, DVDDS1, DVDDS2 ..........-0.3V to +6.0V

DGND, HPGND, SPKLGND, SPKRGND ..............-0.1V to +0.1V

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)

MCLK, SDINS1, SDINS2, JACKSNS,

MAX98088

SDA, SCL, IRQ .................................................-0.3V to +6.0V

LRCLKS1, BCLKS1, SDOUTS1 ......... -0.3V to (DVDDS1 + 0.3V)

LRCLKS2, BCLKS2, SDOUTS2 ......... -0.3V to (DVDDS2 + 0.3V)

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.

ELECTRICAL CHARACTERISTICS

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R HPL or HPR to HPGND. Line out loads (R = J, C

REF

AV

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. 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

= V

PVDD

= 2.2FF, C

= 0dB, AV

DVDD

MICBIAS

DACGAIN

= V

DVDDS1

= C

= 0dB, AV

REG

I

VDD

= V

LOAD

= 1FF, C

ADCLVL

= +1.8V, V

DVDDS2

) connected between RECP and RECN. Headphone loads (RHP) connected from

REC

) connected from LOUTL and LOUTR to ground. R

C1N-C1P

= 1FF, C

= 0dB, AV

Full-duplex 8kHz mono, receiver output

DAC playback 48kHz stereo, headphone outputs

DAC playback 48kHz stereo, speaker outputs

T

= +25NC

A

SLEW = 0 SLEW = 1

ADCGAIN

= +25NC, unless otherwise noted.) (Note 1)

A

REG, INA1, INA2, INB1, INB2, MIC1P/DIGMICDATA,

MIC1N/DIGMICCLK, MIC2P, MIC2N ...............-0.3V to +2.2V

HPSNS ...............................(HPGND - 0.3V) to (HPGND + 0.3V)

HPL, HPR ............................ (HPVSS - 0.3V) to (HPVDD + 0.3V)

RECP, RECN ..............(SPKLGND - 0.3V) to (SPKLVDD + 0.3V)

SPKLP, SPKLN ...........(SPKLGND - 0.3V) to (SPKLVDD + 0.3V)

SPKRP, SPKRN .........(SPKRGND - 0.3V) to (SPKRVDD + 0.3V)

Continuous Power Dissipation (T

= +70NC)

A

63-Bump WLP (derate 25.6mW/NC above +70NC) ........2.05W

Operating Temperature Range .......................... -40NC to +85NC

Storage Temperature Range ............................ -65NC to +150NC

Soldering Temperature (reflow) ......................................+260NC

SPKLVDD

= C

HPVDD

= 0dB, AV

V

SPKLVDD

DVDD

V

DVDDS1

= V

HPVSS

, V

AVDD

, V

SPKRVDD

, V

DVDDS2

= 3.7V. Speaker loads (Z

LOAD

= 1FF. AV

PGAIN_

SPKRVDD

, V

PVDD

MICPRE_

= 0dB, AV

2.8 5.5

1.65 1.8 2

1.65 3.6

= RHP = J, R

= +20dB, AV

= 0dB, AV

HP_

SPK

REC

MICPGA_

= 0dB, AV

REC

) connected

= J, Z

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

SPK

= 0dB,

SPK_

VV

mA

FA

ms

6

Stereo Audio Codec

with FLEXSOUND Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R HPL or HPR to HPGND. Line out loads (R = J, C

REF

AV

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. 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

= V

PVDD

= 2.2FF, C

= 0dB, AV

DVDD

MICBIAS

DACGAIN

= V

DVDDS1

= C

= 0dB, AV

THD+N

CMRR V

PSRR

= V

LOAD

= 1FF, C

REG

ADCLVL

f

S

0dB (Note 4)

V

IN

AV

IN

V

AVDD

MIC inputs floating

f = 217Hz, V AV

f = 1kHz, V AV

f = 10kHz, V AV

= +1.8V, V

DVDDS2

) connected between RECP and RECN. Headphone loads (RHP) connected from

REC

SPKLVDD

) connected from LOUTL and LOUTR to ground. R

C1N-C1P

= 1FF, C

= 0dB, AV

A

HPVDD

ADCGAIN

= +25NC, unless otherwise noted.) (Note 1)

= 8kHz, MODE = 0 (IIR voice), AV

= 0.1V

MICPRE_

= 100mV

, fS = 8kHz, f = 1kHz -77

P-P

= 0dB, VIN = 1V

= +30dB, VIN = 32mV

, f = 217Hz 62 dB

P-P

= 1.65V to 1.95V, input referred,

= 100mV

RIPPLE

= 0dB, input referred

ADC

= 100mV

RIPPLE

= 0dB, input referred

ADC

= 100mV

RIPPLE

= 0dB, input referred

ADC

= V

SPKRVDD

= C

HPVSS

= 0dB, AV

P-P

PGAIN_

MICPRE_

, f = 1kHz -84

, f = 1kHz -70

P-P

= 3.7V. Speaker loads (Z

LOAD

= 1FF. AV

= 0dB, AV

MICPRE_

= +20dB, AV

= 0dB, AV

HP_

=

50 62

,

P-P

,

P-P

,

P-P

= RHP = J, R

REC

88 dB

62

53

) connected

SPK

= J, Z

REC

MICPGA_

= 0dB, AV

SPK

= 0dB,

SPK_

dBAV

dB

MAX98088

1kHz, 0dB input, high-

Path Phase Delay

pass filter disabled measured from analog input to digital output

MICROPHONE PREAMP

Full-Scale Input AV

Preamplifier Gain AV

PGA Gain AV

MIC Input Resistance R

MICPRE_

MICPGA_

IN_MIC

(Note 5)

All gain settings, measured at MIC1P/ MIC1N/MIC2P/MIC2N

MICPRE_

MODE = 0 (IIR voice) 8kHz 2.2

MODE = 0 (IIR voice) 16kHz

MODE = 1 (FIR audio) 8kHz

MODE = 1 (FIR audio) 48kHz

1.1

4.5

0.76

= 0dB 1.05 V

PA1EN/PA2EN = 01 0

PA1EN/PA2EN = 11 29.5 30 30.5 PGAM1/PGAM2 = 0x00 19 20 21 PGAM1/PGAM2 = 0x14 0

50

ms

P-P

dBPA1EN/PA2EN = 10 19.5 20 20.5

dB

kI

7

Stereo Audio Codec with FLEXSOUND Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R HPL or HPR to HPGND. Line out loads (R = J, C

REF

AV

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

MICROPHONE BIAS

MAX98088

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 DC accuracy 1 %

Power-Supply Rejection Ratio

= V

PVDD

= 2.2FF, C

= 0dB, AV

DVDD

MICBIAS

DACGAIN

= V

DVDDS1

= C

REG

= 1FF, C

= 0dB, AV

MICBIASILOAD

ON

THD+N

THD+N V

PSRR

= V

LOAD

ADCLVL

= +1.8V, V

DVDDS2

) connected between RECP and RECN. Headphone loads (RHP) connected from

REC

SPKLVDD

) connected from LOUTL and LOUTR to ground. R

C1N-C1P

= 1FF, C

= 0dB, AV

A

HPVDD

ADCGAIN

= +25NC, unless otherwise noted.) (Note 1)

= V

= C

HPVSS

= 0dB, AV

SPKRVDD

= 1FF. AV

PGAIN_

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV

= 0dB, AV

HP_

REC

= 1mA 2.15 2.2 2.25 V = 1mA to 2mA 0.5 4.5 mV

LOAD

SPKLVDD

f = 217Hz, V f = 10kHz, V

= 2.8V to 5.5V 110

RIPPLE (SPKLVDD)

= 100mV

P-P

92

83 A-weighted, f = 20Hz to 20kHz 3.9 P-weighted, f = 20Hz to 4kHz 2.1 f = 1kHz 50

I

= 100mA, INABYP = MIC2BYP = 1,

MIC1_

V

MIC2_

V

IN

= V

= 2V

= 0V, AVDD, TA = +25NC

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

MIC2_/VINA_

[AVDD, 0V]

INA pin direct, f

= 48kHz, MODE = 1

S

(FIR audio)

IN

V

AVDD

= 1V

, f = 1kHz 82 74 dB

P-P

= 1.65V to 1.95V, input referred,

line inputs floating

f = 217Hz, V AV

= 0dB, input referred

ADC

f = 1kHz, V AV

= 0dB, input referred

ADC

f = 10kHz, V AV

= 0dB, input referred

ADC

RIPPLE

= 100mV

P-P

,

=

-1 +1

57 68

5 30

-80 dB

60 dB

93 dB

72

70

60

SPK

REC

MICPGA_

= 0dB, AV

) connected

= J, Z

SPK

= 0dB,

SPK_

FV

dB

FV

RMS

nV/√Hz

I

FA

dB

8

Stereo Audio Codec

with FLEXSOUND Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R HPL or HPR to HPGND. Line out loads (R = J, C

REF

AV

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. 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)

= V

PVDD

= 2.2FF, C

= 0dB, AV

DVDD

MICBIAS

DACGAIN

= V

DVDDS1

= C

= 0dB, AV

ADCLVL

ADCGAIN

REG

IN

PGAIN_

IN

IN_FB

PLP

SLP

= V

LOAD

= 1FF, C

ADCLVL

AV

PGAIN_

AV

PGAIN_

= +1.8V, V

DVDDS2

) connected between RECP and RECN. Headphone loads (RHP) connected from

REC

SPKLVDD

) connected from LOUTL and LOUTR to ground. R

C1N-C1P

= 1FF, C

= 0dB, AV

A

HPVDD

ADCGAIN

= +25NC, unless otherwise noted.) (Note 1)

= V

= C

HPVSS

= 0dB, AV

SPKRVDD

= 1FF. AV

PGAIN_

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV

= 0dB, AV

HP_

SPK

REC

MICPGA_

= 0dB, AV

REC

) connected

= 0dB 1 = -6dB 1.4

= J, Z

PGAINA/PGAINB = 0x0 19 20 21 PGAINA/PGAINB = 0x1 13 14 15

TA = +25NC (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

PGAINA/PGAINB = 0x2 2 3 4 PGAINA/PGAINB = 0x3 0 PGAINA/PGAINB = 0x4 -4 -3 -2

PGAINA/PGAINB = 0x5, 0x6, 0x7

= +25NC

T

A

T

= T

MIN

to T

MAX

A

-7 -6 -5

18 20 22 16 24

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

-0.1 +0.1 dB

0.47 x fSHz

f > f

SLP

74 dB

= 0dB,

V

SPK

SPK_

P-P

dB

kI

Hz

MAX98088

9

Stereo Audio Codec with FLEXSOUND Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R HPL or HPR to HPGND. Line out loads (R = J, C

REF

AV

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

VOICE MODE IIR HIGHPASS FILTER (MODE1 = 0)

MAX98088

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

= V

PVDD

= 2.2FF, C

= 0dB, AV

DVDD

MICBIAS

DACGAIN

= V

DVDDS1

= C

= 0dB, AV

f

AHPPB

f

AHPSB

REG

ATTEN

PLP

SLP

PLP

SLP

= V

DVDDS2

LOAD

= 1FF, C

ADCLVL

= +1.8V, V

) connected between RECP and RECN. Headphone loads (RHP) connected from

REC

SPKLVDD

= V

SPKRVDD

) connected from LOUTL and LOUTR to ground. R

C1N-C1P

= 0dB, AV

= 1FF, C

ADCGAIN

= +25NC, unless otherwise noted.) (Note 1)

A

HPVDD

= 0dB, AV

= C

HPVSS

PGAIN_

= 1FF. AV

AVFLT = 0x1 (Elliptical tuned for fS = 16kHz + 217Hz notch)

AVFLT = 0x2 (500Hz Butterworth tuned for f

=

S

16kHz)

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)

AVFLT = 0x3 (Elliptical tuned for fS = 8kHz + 217Hz notch)

AVFLT = 0x4 (500Hz Butterworth tuned for fS = 8kHz)

AVFLT = 0x5 (fS/240 Butterworth)

AVFLT ≠ 000

Ripple limit cutoff 0.43 x f

-6.02dB cutoff 0.5 x f

PLP

f < f

SLP

Ripple limit cutoff 0.208 x f

-3dB cutoff 0.28 x f

PLP

SLP

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV = 0dB, AV

HP_

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

-0.1 +0.1 dB

60 dB

S

-0.1 +0.1 dB

60 dB

) connected

SPK

= J, Z

REC

MICPGA_

= 0dB, AV

REC

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 f

= 0dB,

S

SPK

SPK_

Hz

Hz-3dB cutoff 0.48 x f

Hz

10

Stereo Audio Codec

with FLEXSOUND Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R HPL or HPR to HPGND. Line out loads (R = J, C

REF

AV

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

ADC 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

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

= V

PVDD

= 2.2FF, C

= 0dB, AV

DVDD

MICBIAS

DACGAIN

= V

DVDDS1

= C

= 0dB, AV

f

AHPPB

AV

THD+N

DACATTN

DACGAIN

REG

= V

LOAD

= 1FF, C

ADCLVL

= +1.8V, V

DVDDS2

) connected between RECP and RECN. Headphone loads (RHP) connected from

REC

SPKLVDD

) connected from LOUTL and LOUTR to ground. R

C1N-C1P

= 1FF, C

= 0dB, AV

A

HPVDD

ADCGAIN

= +25NC, unless otherwise noted.) (Note 1)

= V

= C

HPVSS

= 0dB, AV

SPKRVDD

= 1FF. AV

PGAIN_

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV

= 0dB, AV

HP_

REC

AVFLT ≠ 000

Atten

AVFLT ≠ 000

90 dB

AGCHLD = 01 50 AGCHLD = 11 400 AGCATK = 00 2 AGCATK = 11 123 AGCRLS = 000 0.078 AGCRLS = 111 10

DVST = 0x01 -0.5

STGA

DVST = 0x1F -60.5

2 dB

1kHz, 0dB input, highpass filter disabled

= 48kHz, MCLK = 12.288MHz, MODE = 1

f

S

(FIR audio), MIC to HP output, T

f = 1kHz, f

= 48kHz, MCLK = 12.288MHz, MODE

S

= 1 (FIR audio), MIC to HP output

8kHz 2.2 16kHz 1.1

= +25NC

A

83 93 dB

81 dB

DV1DV2 = 0xF to 0x0 (Note 5) -15 0 dB

DV1G = 00 to 11 (Note 5) 0 18 dB

) connected

SPK

= J, Z

REC

MICPGA_

= 0dB, AV

0.000125 x f

S

= 0dB,

SPK

SPK_

Hz

ms

s

dB

ms

MAX98088

11

Stereo Audio Codec with FLEXSOUND Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R HPL or HPR to HPGND. Line out loads (R = J, C

REF

AV

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DAC DIGITAL FILTERS

MAX98088

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)

= V

PVDD

= 2.2FF, C

= 0dB, AV

DVDD

MICBIAS

DACGAIN

= V

DVDDS1

= C

= 0dB, AV

f

DHPPB

f

DHPSB

REG

PLP

SLP

ATTEN

PLP

SLP

= V

LOAD

= 1FF, C

ADCLVL

= +1.8V, V

DVDDS2

) connected between RECP and RECN. Headphone loads (RHP) connected from

REC

SPKLVDD

= V

SPKRVDD

) connected from LOUTL and LOUTR to ground. R

C1N-C1P

= 0dB, AV

= 1FF, C

ADCGAIN

= +25NC, unless otherwise noted.) (Note 1)

A

HPVDD

= 0dB, AV

= C

HPVSS

PGAIN_

= 1FF. AV

= 0dB, AV

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)

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)

DVFLT = 0x3 (Elliptical tuned for fS = 8kHz + 217Hz notch)

DVFLT = 0x4 (500Hz Butterworth tuned for fS = 8kHz)

DVFLT = 0x5 (fS/240 Butterworth)

DVFLT ≠ 000

Ripple limit cutoff 0.43 x f

-6.02dB cutoff 0.5 x f

PLP

f > f

SLP

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= +20dB, AV

= 0dB, AV

HP_

S

REC

-0.1 +0.1 dB

0.476 x f

75 dB

0.0139 x f

S

0.0156 x f

S

0.0279 x f

S

0.0312 x f

S

0.0021 x f

S

85 dB

S

-0.1 +0.1 dB

60 dB

) connected

SPK

= J, Z

REC

MICPGA_

= 0dB, AV

SPK

= 0dB,

SPK_

Hz

S

0.0161 x f

S

0.0312 x f

S

0.0321 x f

Hz

S

0.0625 x f

S

0.0042 x f

S

Hz

Hz-3dB cutoff 0.47 x f

0.58 x fSHz

12

Stereo Audio Codec

with FLEXSOUND Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R HPL or HPR to HPGND. Line out loads (R = J, C

REF

AV

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. 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

Click-and-Pop Level K

= V

PVDD

= 2.2FF, C

= 0dB, AV

DVDD

MICBIAS

DACGAIN

= V

DVDDS1

= C

= 0dB, AV

f

DHPPB

THD+N

PSRR

REG

PLP

SLP

ATTEN

CP

= V

LOAD

= 1FF, C

ADCLVL

Ripple limit cutoff 0.24 x f

-3dB cutoff 0.31 x f

= +1.8V, V

DVDDS2

) connected between RECP and RECN. Headphone loads (RHP) connected from

REC

SPKLVDD

) connected from LOUTL and LOUTR to ground. R

C1N-C1P

PLP

= 1FF, C

= 0dB, AV

A

HPVDD

ADCGAIN

= +25NC, unless otherwise noted.) (Note 1)

= V

= C

HPVSS

= 0dB, AV

SPKRVDD

= 1FF. AV

PGAIN_

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV

= 0dB, AV

HP_

S

-0.1 +0.1 dB

SPK

REC

MICPGA_

= 0dB, AV

REC

) connected

= J, Z

0.477 x fSHz

f < f

SLP

DVFLT ≠ 000 (DAI1), DCB2 = 1 (DAI2)

60 dB

0.000104 x f

S

90 dB

ALCMB = 1 5 kHz

ALCRLS = 101 0.25

ALCRLS = 000 8

= 48kHz, f = 1kHz (Note 4) 96 dB

S

f = 1kHz, P

V

SPKLVDD

f = 217Hz, V

f = 1kHz, V

f = 10kHz, V

= 15mW, R

OUT

REC

= 2.8V to 5.5V 64 75

= 100mV

RIPPLE

= 100mV

RIPPLE

= 100mV

P-P

Peak voltage, A-weighted, 32 samples per second, AV

REC

= 0dB

= 32I

P-P

Into shutdown 68

Out of shutdown 72

70 63 dB

-59

SPK

= 0dB,

SPK_

Hz

s

dB

dBV

MAX98088

13

Stereo Audio Codec with FLEXSOUND Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R HPL or HPR to HPGND. Line out loads (R = J, C

REF

AV

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

LINE INPUT TO RECEIVER AMPLIFIER PATH

MAX98088

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 AV Mute Attenuation f = 1kHz 85 dB Output Offset Voltage V Capacitive Drive Capability

= V

PVDD

= 2.2FF, C

= 0dB, AV

DVDD

MICBIAS

DACGAIN

= V

DVDDS1

= C

= 0dB, AV

REG

= V

DVDDS2

LOAD

= 1FF, C

ADCLVL

= +1.8V, V

) connected between RECP and RECN. Headphone loads (RHP) connected from

REC

SPKLVDD

) connected from LOUTL and LOUTR to ground. R

C1N-C1P

= 1FF, C

= 0dB, AV

A

HPVDD

ADCGAIN

= +25NC, unless otherwise noted.) (Note 1)

= V

= C

HPVSS

= 0dB, AV

SPKRVDD

= 1FF. AV

PGAIN_

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV

= 0dB, AV

HP_

SPK

REC

MICPGA_

= 0dB, AV

REC

THD+N 64 dB

CP

OUT

REC

Peak voltage, A-weighted, 32 samples per second, AV = 0dB

R

= 32I, f = 1kHz, THD = 1%

REC

RECVOL = 0x00 -62 RECVOL = 0x1F 8

Into shutdown -51

REC

Out of shutdown -49

83 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

Q3.0

500 pF

THD+N

OS

= 32I

R

REC

R

= J

REC

= 48kHz, f = 1kHz 83 96 dB

S

f = 1kHz, R

HP

= 1kI

L

= 10kI

L

= 0dB, AV

= 0 dB (Note 7) 2 V

OUT

AVHP = -67dB No sustained oscillations, R

= 1kI

L

) connected

= J, Z

SPK

= 0dB,

SPK_

dBV

RMS

dB

pF

P-P

4 mV

14

Stereo Audio Codec

with FLEXSOUND Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R HPL or HPR to HPGND. Line out loads (R = J, C

REF

AV

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. 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

Volume Control Step Size

Mute Attenuation f = 1kHz 86 dB Output Offset Voltage V

= V

PVDD

= 2.2FF, C

= 0dB, AV

DVDD

MICBIAS

DACGAIN

= V

DVDDS1

= C

= 0dB, AV

THD+N

REG

CP

OUT

SPK_

OS

= V

LOAD

= 1FF, C

ADCLVL

f = 1kHz, P

= +1.8V, V

DVDDS2

) connected between RECP and RECN. Headphone loads (RHP) connected from

REC

SPKLVDD

) connected from LOUTL and LOUTR to ground. R

C1N-C1P

= 1FF, C

= 0dB, AV

A

= 200mW, Z

OUT

HPVDD

ADCGAIN

= +25NC, unless otherwise noted.) (Note 1)

= V

= C

HPVSS

= 0dB, AV

= 8I + 68FH

SPK

SPKRVDD

= 1FF. AV

PGAIN_

= 3.7V. Speaker loads (Z

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV

= 0dB, AV

HP_

SPKL to SPKR and SPKR to SPKL, P

= 640mW, f = 1kHz

OUT

Peak voltage, A-weighted,

Into shutdown 65

32 samples per second, AV

= 0dB

SPK_

f = 1kHz, P

= 200mW, RL = 8I + 68FH

OUT

Peak voltage, A-weighted, 32 samples per second, AV

SPK_

= 0dB

V

f = 1kHz, THD = 1%, Z

= 8I +

SPK

68FH

(Note 5)

SPKLVDD

V

SPKLVDD

V

SPKLVDD

V

SPKLVDD

SPVOLL/SPVOLR = 0x00 -62 SPVOLL/SPVOLR = 0x1F +8

Out of shutdown 66

= 0dB 82 dB

SPK_

Into shutdown 55

Out of shutdown 52

= V = V = V = V

SPKRVDD

= 5.0V 1323 = 4.2V 914 = 3.7V 700 = 3.2V 514

+8dB to +6dB 0.5 +6dB to +0dB 1 0dB to -14dB 2

-14dB to -38dB 3

-38dB to -64dB 4

AV

= -61dB, TA = +25NC Q0.5 Q3

SPK_

SPK

= RHP = J, R

REC

MICPGA_

= 0dB, AV

REC

-68 dB

-88 dB

71 dB

) connected

= J, Z

= 0dB,

FV

dBV

SPK

SPK_

RMS

mW

RMS

dB

mV

MAX98088

15

Stereo Audio Codec with FLEXSOUND Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R HPL or HPR to HPGND. Line out loads (R = J, C

REF

AV

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

EXCURSION LIMITER

MAX98088

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 k

DISTORTION LIMITER

Distortion Limit

Release Time Constant

= V

PVDD

= 2.2FF, C

= 0dB, AV

DVDD

MICBIAS

DACGAIN

= V

DVDDS1

= C

= 0dB, AV

PWR1

PWR2

REG

PWR

= V

LOAD

= 1FF, C

ADCLVL

= +1.8V, V

DVDDS2

) connected between RECP and RECN. Headphone loads (RHP) connected from

REC

SPKLVDD

) connected from LOUTL and LOUTR to ground. R

C1N-C1P

= 1FF, C

= 0dB, AV

A

HPVDD

ADCGAIN

= +25NC, unless otherwise noted.) (Note 1)

= V

= C

HPVSS

= 0dB, AV

SPKRVDD

= 1FF. AV

PGAIN_

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV

= 0dB, AV

HP_

SPK

REC

MICPGA_

= 0dB, AV

REC

) connected

DHPUCF = 001 to 100 400 1000 Hz

DHPUCF = 000 (fixed mode) 100 DHPUCF = 001 200 DHPUCF = 010 300 DHPUCF = 011 400 DHPUCF = 100 500

= 8I + 68FH,

Z

SPK

V

SPKLVDD

5.5V, AV

= V

SPK_

SPKRVDD

= 8dB

DHPTH = 000 0.34

=

DHPTH = 111 0.95

ALCRLS = 101 0.25 ALCRLS = 000 4

= 8I + 68FH,

Z

SPK

V

SPKLVDD

5.5V, AV

= V

SPK_

SPKRVDD

= 8dB

PWRTH = 0x1 0.08

=

PWRTH = 0xF 1.23

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 %

THDCLP = 0x1 < 1

THDCLP = 0xF 24

THDT1 = 000 0.76

THDT1 = 111 6.2

= J, Z

= 0dB,

SPK

SPK_

Hz

V

P

s

W

s

min

%

s

16

Stereo Audio Codec

with FLEXSOUND Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R HPL or HPR to HPGND. Line out loads (R = J, C

REF

AV

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. 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

DAC Path Phase Delay

Gain Error 1 5 %

Channel Gain Mismatch 1 %

Click-and-Pop Level K

LINE INPUT TO HEADPHONE AMPLIFIER PATH

Total Harmonic Distortion + Noise

Dynamic Range (Note 4) 92.5 dB

Click-and-Pop Level K

= V

PVDD

= 2.2FF, C

= 0dB, AV

DVDD

MICBIAS

DACGAIN

= V

DVDDS1

= C

= 0dB, AV

REG

= V

LOAD

= 1FF, C

ADCLVL

= 48kHz

S

THD+N f = 1kHz, P

HPL to HPR and HPR to HPL, P f = 1kHz, R

V

AVDD

f = 217Hz, V AV

VOL

PSRR

f = 1kHz, V AV

VOL

f = 10kHz, V AV

VOL

1kHz, 0dB input, highpass filter disabled measured from digital input to analog output

Peak voltage, A-weighted, 32 samples per second,

CP

AV

HP_

THD+N

V

IN

Peak voltage, A-weighted, 32 samples per second,

CP

AV

HP_

= +1.8V, V

DVDDS2

) connected between RECP and RECN. Headphone loads (RHP) connected from

REC

SPKLVDD

) connected from LOUTL and LOUTR to ground. R

C1N-C1P

= 1FF, C

= 0dB, AV

A

HPVDD

ADCGAIN

= +25NC, unless otherwise noted.) (Note 1)

= V

= C

HPVSS

= 0dB, AV

SPKRVDD

= 1FF. AV

PGAIN_

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV

= 0dB, AV

HP_

SPK

REC

MICPGA_

= 0dB, AV

REC

Master or slave mode 101

Low power mode 95 97

OUT

HP

= V

PVDD

= 0dB

RIPPLE

= 0dB

= 16I

R

= 20mW

R

HP

OUT

= 32I

= 5mW,

= 32I

= 1.65V to 2.0V 46 54

RIPPLE

= 200mV

P-P

,

MODE = 0 (voice) 8kHz

MODE = 0 (voice) 16kHz

MODE = 1 (music) 8kHz

MODE = 1 (music) 48kHz

-84 -64

-83

83 dB

72

63

43

2.2

1.1

4.5

0.76

Into shutdown -62

= 0dB

= 1V

, f =1kHz, RL = 32I

P-P

Out of shutdown -63

81 dB

Into shutdown -62

= 0dB

Out of shutdown -63

) connected

= J, Z

= 0dB,

SPK_

dBSlave mode 97

dB

ms

dBV

MAX98088

SPK

17

Stereo Audio Codec with FLEXSOUND Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R HPL or HPR to HPGND. Line out loads (R = J, C

REF

AV

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

HEADPHONE AMPLIFIER

MAX98088

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)

Full-Scale Output (Note 7) 1 V

Volume Control AV

Volume Control Step Size

Mute Attenuation f = 1kHz 100 dB

Output Offset Voltage V

Capacitive Drive Capability No sustained oscillations

SPEAKER BYPASS SWITCH

On-Resistance R

Total Harmonic Distortion + Noise

Off-Isolation

Off-Leakage Current

= V

PVDD

= 2.2FF, C

= 0dB, AV

DVDD

MICBIAS

DACGAIN

= V

DVDDS1

= C

= 0dB, AV

HPVDD

HPVSS

VTH2

THD+N

REG

OUT

HP_

OS

ON

= V

DVDDS2

LOAD

= 1FF, C

ADCLVL

f = 1kHz, THD = 1%

V

OUT

V

OUT

V

OUT

V

OUT

= +1.8V, V

) connected between RECP and RECN. Headphone loads (RHP) connected from

REC

SPKLVDD

) connected from LOUTL and LOUTR to ground. R

C1N-C1P

= 1FF, C

= 0dB, AV

A

HPVDD

ADCGAIN

= +25NC, unless otherwise noted.) (Note 1)

= V

= C

HPVSS

= 0dB, AV

= 32I

R

L

R

= 16I

L

SPKRVDD

= 1FF. AV

PGAIN_

= 3.7V. Speaker loads (Z

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV = 0dB, AV

HP_

= 0.2V, RL = J = 0.5V, RL = J = 0.2V, RL = J = 0.5V, RL = J

RL = J

(Note 5)

HPVOL_ = 0x00 -67

HPVOL_ = 0x1F +3 +3dB to +1dB 0.5 +1dB to -5dB 1

-5dB to -19dB 2

-19dB to -43dB 3

-43dB to -67dB 4

= +25NC Q0.5 Q1

T AV

= -67dB

HP_

I

= 100mA, SPKBYP = 1,

SPKL_

V

= [0V, V

RXIN_

= 2V

V

IN

Z

= 8I + 68FH, f = 1kHz,

SPK

, VCM = V

P-P

SPKLVDD

SPKBYP = 1

V

IN

= 2V

, VCM = V

P-P

]

SPKLVDD

A

T

= T

MIN

= 32I = J

= 10I

R

S

R

= 0I

S

to T

MAX

R

/2,

A

HP

/2, ZL = 8I + 68FH,

f = 1kHz

V

RXIN_

V

SPKL_

= [0V, V

= [V

SPKLVDD

, 0V]

],

-20 +20

SPK

= RHP = J, R

REC

MICPGA_

= 0dB, AV

REC

30 38

PVDD/2

PVDD

-PVDD/2

-PVDD

QPVIN

x 0.25

500 100

2.8

60

96 dB

) connected

Q3

= J, Z

= 0dB,

SPK

SPK_

mW

V

RMS

dB

mV

pF

I

dB

FA

18

Stereo Audio Codec

with FLEXSOUND Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R HPL or HPR to HPGND. Line out loads (R = J, C

REF

AV

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. 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 Threshold

= V

PVDD

= 2.2FF, C

= 0dB, AV

DVDD

MICBIAS

DACGAIN

= V

DVDDS1

= C

= 0dB, AV

THD+N

= V

DVDDS2

) connected between RECP and RECN. Headphone loads (RHP) connected from

REC

) connected from LOUTL and LOUTR to ground. R

LOAD

= 1FF, C

REG

ON

C1N-C1P

= 0dB, AV

ADCLVL

I

= 100mA, RECBYP = 1, V

RECP

V

SPKLVDD

V

IN

= 2V

]

P-P

f = 1kHz, RECBYP = 1, R

V

= 2V

IN

P-P

f = 1kHz

V

= [0V, V

RECP

[V

SPKLVDD

, 0V]

SHDN = 1, JACKSNS rising

SHDN = 0, JKSNS

= +1.8V, V

= 1FF, C

, VCM = V

SPKLVDD

HPVDD

ADCGAIN

= +25NC, unless otherwise noted.) (Note 1)

A

SPKLVDD

], V

= V

SPKRVDD

= C

HPVSS

= 0dB, AV

RECN

PGAIN_

= [0V,

/2, ZL = 8I + 68FH,

= 0I

S

/2, ZL = 8I + 68FH,

=

RECN

= 3.7V. Speaker loads (Z

= 1FF. AV

= 0dB, AV

= RHP = J, R

LOAD

MICPRE_

= +20dB, AV = 0dB, AV

HP_

REC

2

60 %

84 dB

-15 +15

0.92 x

V

MICBIAS

0.95 x

V

MICBIAS

SPKLVDD - 0.7

) connected

SPK

= J, Z

REC

MICPGA_

= 0dB, AV

0.98 x

V

MICBIAS

SPK

= 0dB,

SPK_

I

FA

V

MAX98088

JACKSNS Sense Voltage JACKSNS Sense Current V

SHDN = 0

JACKSNS

= 0V 4 10

SPKLVDD V

BATTERY ADC

Input Voltage Range 2.6 5.6 V LSB Size 0.1 V

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

SDINS1, BCLKS1, LRCLKS1—INPUT

Input High Voltage V

Input Low Voltage V

Input Hysteresis 200 mV Input Leakage Current I Input Capacitance 10 pF

HPVDD

= V

DVDD

= V

DVDDS1

IH

IL

, I

IH

IL

, I

= V

IL

DVDDS2

V

DVDD

V

DVDDS1

= +1.8V, V

SPKLVDD

= V

SPKRVDD

= 2.0V, VIN = 0V, 5.5V; TA = +25°C

= 3.6V, VIN = 0V, 3.6V; TA = +25°C

= 3.7V, TA = +25NC, unless otherwise noted.)

1.2 V

0.6 V

-1 +1

0.7 x

DVDDS1

0.29 x

DVDDS1

-1 +1

FA

V

FA

19

Stereo Audio Codec with FLEXSOUND Technology

DIGITAL INPUT/OUTPUT CHARACTERISTICS (continued)

(V

= V

AVDD

(Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

BCLKS1, LRCLKS1, SDOUTS1—OUTPUT

Output Low Voltage V

Output High Voltage V

MAX98088

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

DIGMICDATA—INPUT

Input High Voltage V

Input Low Voltage V

Input Hysteresis 125 mV Input Leakage Current I Input Capacitance 10 pF

HPVDD

= V

DVDD

= V

DVDDS1

IH

OH

IH

= V

DVDDS2

V

OL

OH

, I

IH

IL

, I

OL

OH

, I

IH

IL

, I

OL

IH

IL

, I

DVDDS1

V

DVDDS1

V

DVDD

IL

high-impedance state

IL

V

DVDDS2

V

DVDDS2

V

DVDDS2

V

DVDD

IL

high-impedance state

V

IL

DVDD

V

OUT

V

DVDD

IL

V

DVDD

= +1.8V, V

SPKLVDD

= V

SPKRVDD

= 3.7V, TA = +25NC, unless otherwise noted.)

= 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 = +25NC,

DVDDS2

- 0.4

-1 +1

0.7 x

DVDD

0.3 x

DVDD

= 2.0V, VIN = 0V, 5.5V; TA = +25NC

= 5.5V, TA = +25°C

= 1.65V, IOL = 3mA

-1 +1

1 mA

0.2 x

DVDD

0.65 x

DVDD

0.35 x DVDD

= 2.0V, VIN = 0V, 2.0V; TA = +25°C

-25 +25

V

FA

V

FA

V

FA

V

FA

V

FA

20

Stereo Audio Codec

with FLEXSOUND Technology

DIGITAL INPUT/OUTPUT CHARACTERISTICS (continued)

(V

= V

AVDD

(Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DIGMICCLK—OUTPUT

Output Low Voltage V

Output High Voltage 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

HPVDD

= V

HPVDD

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DVDD

= V

DVDDS1

= V

OL

OH

= V

MCLK

= +1.8V, V

DVDDS2

V

= 1.65V, IOL = 1mA 0.4 V

DVDD

V

= 1.65V, IOH = 1mA

DVDD

= +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 = +25NC, unless otherwise noted.)

DVDD -

0.4

= 3.7V, TA = +25NC, unless otherwise noted.)

10 60 MHz

-0.025 +0.025 %

kHz

100 ns

MAX98088

V

%

RMS

%

ms

21

Stereo Audio Codec with FLEXSOUND Technology

AUDIO INTERFACE TIMING CHARACTERISTICS

(V

= V

AVDD

(Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

BCLK Cycle Time t BCLK High Time t BCLK Low Time t BCLK or LRCLK Rise and Fall Time t

MAX98088

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

HPVDD

= V

DVDD

= V

DVDDS1

SYNCSET

SYNCHOLD

t

CLKSYNC

t

ENDSYNC

= V

BCLK

BCLKH

BCLKL

, t

R

SETUP

HOLD

t

HIZOUT

SYNCTX

CLKTX

DVDDS2

= +1.8V, V

SPKLVDD

= V

Slave mode 90 ns Slave mode 20 ns Slave mode 20 ns Master mode, CL = 15pF ns

F

Slave mode 20 ns

Master mode, TDM_ = 1 42 ns

CL = 30pF, TDM_ = 1, FSW_ = 1 50 ns

CL = 30pF

Master mode

TDM_ = 1, BCLK rising edge 50 TDM_ = 0 50 TDM_ = 1 -15 +15

TDM_ = 0

TDM_ = 1, FSW_ = 1 20 ns

SPKRVDD

= 3.7V, TA = +25NC, unless otherwise noted.)

20 ns

ns

0.8 x

t

BCLKL

ns

t

CLKSYNC

t

HIZOUT

F

t

CLKTX

HI-Z MSB

MASTER MODE

t

SETUPtHOLD

MSBLSB

BCLK

(OUTPUT)

LRCLK

(OUTPUT)

SDOUT

(OUTPUT)

SDIN

(INPUT)

t

R

LSB

Figure 1. Non-TDM Audio Interface Timing Diagrams (TDM_ = 0)

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

with FLEXSOUND Technology

t

F

BCLK (OUTPUT)

t

CLKSYNC

LRCLK (OUTPUT)

t

SDOUT (OUTPUT)

SDIN (INPUT)

HIZOUT

LSB

CLKTX

HI-ZLSB

MASTER MODE SLAVE MODE

Figure 2. TDM Audio Interface Timing Diagram (TDM_ = 1, FSW_ = 0)

t

R

t

CLKSYNC

MSB

t

SETUP

t

HOLD

SDOUT (OUTPUT)

BCLK (INPUT)

LRCLK (INPUT)

SDIN (INPUT)

Stereo Audio Codec

t

BCLK

t

SYNCSET

t

HIZOUT

LSB

t

CLKTX

HI-ZLSB

t

BCLKH

t

SYNCHOLD

MSB

t

SETUP

t

BCLKL

t

HOLD

MAX98088

BCLK (OUTPUT)

LRCLK (OUTPUT)

SDOUT (OUTPUT)

SDIN (INPUT)

t

F

t

ENDSY NC

t

HIZOUT

LSB MSB

t

SYNCTX

HI-ZLSB 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)

DIGMICCLK Frequency f

DIGMICDATA to DIGMICCLK Setup Time

DIGMICDATA to DIGMICCLK Hold Time

HPVDD

= V

DVDD

= V

DVDDS1

= V

DVDDS2

= +1.8V, V

SPKLVDD

= V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

MICCLK

t

SU,MIC

t

HD,MIC

MICCLK = 00 MCLK/8 MICCLK = 01 MCLK/6

Either clock edge 20 ns

Either clock edge 0 ns

t

HIZOUT

SPKRVDD

t

BCLK

LSB

t

SYNCTX

HI-ZLSB

SLAVE MODE

t

BCLKH

MSB

t

CLKTX

MSB

t

SETUP

t

BCLKL

t

HOLD

= 3.7V, TA = +25NC, unless otherwise noted.)

MHz

23

Stereo Audio Codec with FLEXSOUND Technology

1/f

MICCLK

t

HD,MICtSU,MIC

t

HD,MICtSU,MIC

LEFT RIGHT LEFT RIGHT

Figure 4. Digital Microphone Timing Diagram

MAX98088

I2C TIMING CHARACTERSTICS

(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

HPVDD

= V

DVDD

= V

DVDDS1

= V

DVDDS2

= +1.8V, V

SPKLVDD

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

SCL

t

BUF

t

HD,STA

LOW

HIGH

t

SU,STA

HD,DAT

SU,DAT

SU,STO

SP

Guaranteed by SCL pulse-width low and high

RPU = 475I, CB = 100pF, 400pF

(Note 10)

R

(Note 10)

F

RPU = 475I, CB = 100pF, 400pF (Note 10)

F

Guaranteed by SDA transmitting fall time 400 pF

B

= V

SPKRVDD

= 3.7V, TA = +25NC, unless otherwise noted.)

0 400 kHz

1.3

0.6

1.3

0.6

Fs

Fs Fs

Fs

0 900 ns

100 ns

20 +

0.1C

20 +

0.1C

20 +

0.05C

0.6

B

300 ns

250 ns

Fs

0 50 ns

24

with FLEXSOUND Technology

I2C TIMING CHARACTERISTICS (continued)

(V

AVDD

(Note 1)

= V

SDA

HPVDD

= V

DVDD

= V

t

LOW

DVDDS1

t

SU,DAT

= V

DVDDS2

t

HD,DAT

= +1.8V, V

SPKLVDD

t

SU,STA

Stereo Audio Codec

= V

SPKRVDD

t

= 3.7V. TA = +25NC, unless otherwise noted.)

t

HD,STA

t

SP

t

SU,STO

BUF

MAX98088

SCL

t

HD,STA

START CONDITION

2

Figure 5. I

C Interface Timing Diagram

Note 1: The IC is 100% production tested at T Note 2: Analog supply current = I

+ I

DVDDS1

+ I

DVDDS2

t

HIGH

R

AVDD

+ I

t

F

REPEATED START CONDITION

= +25NC. Specifications over temperature limits are guaranteed by design.

A

. Speaker supply current = I

HPVDD

SPKLVDD

+ I

SPKRVDD

STOP

CONDITION

. Digital supply current = I

START

CONDITION

DVDD

t

.

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: CB is in pF.

Power Consumption

(V

= V

AVDD

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

PVDD

= V

MODE

DVDD

= V

DVDDS1

= V

DVDDS2

I

AVDD

(mA)

= 1.8V, V

I

PVDD

(mA)

SPKLVDD

I

SPKVDD

I

SPKLVDD

= V

(mA)

SPKRVDD

+

= 3.7V)

I

DVDD

(mA)

I

DVDDS1

I

DVDDS2

(mA)

+

POWER

(W)

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

DYNAMIC

RANGE (dB)

25

Stereo Audio Codec with FLEXSOUND Technology

Power Consumption (continued)

(V

= V

AVDD

DAC Playback 48kHz Stereo HP

DAC ª HP 24-bit, music filters, 256Fs

MAX98088

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

= 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 8.46 100

1.25 0.47 0.00 1.25 0.01 5.34 97

2.04 1.27 0.00 1.07 0.00 7.89 95

1.26 0.47 0.00 0.90 0.00 4.72 94

0.77 0.29 0.00 0.79 0.00 3.33 93.7

2.40 1.27 0.00 0.02 0.00 6.67 95

2.31 0.00 6.33 2.14 0.01 31.44 86

DVDDS2

= 1.8V, V

I

PVDD

(mA)

SPKLVDD

I

SPKVDD

I

SPKLVDD

= V

(mA)

SPKRVDD

+

= 3.7V)

I

DVDD

(mA)

I

DVDDS1

I

DVDDS2

(mA)

+

POWER

(W)

DYNAMIC

RANGE (dB)

26

Stereo Audio Codec

with FLEXSOUND Technology

Power Consumption (continued)

(V

AVDD

= V

PVDD

= V

DVDD

= V

DVDDS1

= V

DVDDS2

= 1.8V, V

SPKLVDD

= V

SPKRVDD

= 3.7V)

MAX98088

MODE

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

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

SPKLVDD

(mA)

+

I

DVDD

(mA)

I

DVDDS1

I

AVDD

(mA)

1.35 0.00 3.23 1.84 0.01 17.69 86

1.01 0.00 3.24 0.03 0.00 13.83 83

6.32 0.00 1.54 1.24 0.01 19.33

11.19 1.27 0.48 1.28 0.01 26.43

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

I

PVDD

(mA)

SPKVDD

I

DVDDS2

(mA)

+

POWER

(W)

DYNAMIC

RANGE (dB)

Record = 87

Playback = 94

Record = 87

Playback = 96

Record = 87

Playback = 94

27

Stereo Audio Codec with FLEXSOUND Technology

Typical Operating Characteristics

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R from HPL or HPR to HPGND. R C

= 1FF. AV

HPVSS

0dB, AV

PGAIN_

unless otherwise noted.)

= V

PVDD

= 0dB, AV

DVDD

MICPRE_

= V

DVDDS1

= J, R

HP

= +20dB, AV

= 0dB, AV

HP_

= V

DVDDS2

= J, Z

REC

MICPGA_

= 0dB, AV

REC

= +1.8V, V

) connected between RECP and RECN. Headphone loads (RHP) connected

REC

= J, C

SPK

= 0dB, AV

SPK_

SPKLVDD

REF

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = +25NC,

= V

= 2.2FF, C

= 0dB, AV

SPKRVDD

MICBIAS

DACGAIN

= 3.7V. Speaker loads (Z

= C

= 1FF, C

REG

= 0dB, AV

C1N-C1P

ADCLVL

= 0dB, AV

) connected

SPK

= 1FF, C

ADCGAIN

Microphone to ADC

MAX98088

HPVDD

= =

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)

100010010 10,000

-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

= 1V

V

IN

-30

-40

-50

-60

THD+N RATIO (dB)

-70

-80

-90

-100

P-P

AV

= 0dB

MICPRE_

10 100,000

FREQUENCY (Hz)

10,0001000100

MAX98088 toc01

THD+N RATIO (dB)

MAX98088 toc04

THD+N RATIO (dB)

TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY (MIC TO ADC)

0

MCLK = 13MHz

-10

LRCLK = 44.1kHz PLL MODE

-20

= 1V

V

IN

-30

-40

-50

-60

-70

-80

-90

P-P

AV

= 0dB

MICPRE_

10 100,000

FREQUENCY (Hz)

10,0001000100

TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY (MIC TO ADC)

0

MCLK = 13MHz

-10

LRCLK = 8kHz

-20

FREQ MODE

= 0.1V

V

IN

AV

MICPRE_

P-P

= 0dB

FREQUENCY (Hz)

100010010 10,000

-30

-40

-50

-60

-70

-80

-90

-100

MAX98088 toc02

THD+N RATIO (dB)

MAX98088 toc05

THD+N RATIO (dB)

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

-70

-80

-90

-100

P-P

AV

= 0dB

MICPRE_

10 100,000

FREQUENCY (Hz)

10,0001000100

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

= 0dB

FREQUENCY (Hz)

100010010 10,000

-30

-40

-50

-60

-70

-80

-90

-100

AV

MAX98088 toc03

MAX98088 toc06

28

Stereo Audio Codec

with FLEXSOUND Technology

Typical Operating Characteristics (continued)

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R from HPL or HPR to HPGND. R C

= 1FF. AV

HPVSS

0dB, AV

PGAIN_

unless otherwise noted.)

= V

PVDD

= 0dB, AV

DVDD

MICPRE_

= V

DVDDS1

= J, R

HP

= +20dB, AV

= 0dB, AV

HP_

= V

DVDDS2

= J, Z

REC

MICPGA_

= 0dB, AV

REC

= +1.8V, V

) connected between RECP and RECN. Headphone loads (RHP) connected

REC

= J, C

SPK

= 0dB, AV

SPK_

SPKLVDD

REF

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = +25NC,

= V

= 2.2FF, C

= 0dB, AV

SPKRVDD

MICBIAS

DACGAIN

= 3.7V. Speaker loads (Z

= C

= 1FF, C

REG

= 0dB, AV

C1N-C1P

ADCLVL

= 0dB, AV

) connected

SPK

= 1FF, C

ADCGAIN

HPVDD

= =

MAX98088

GAIN vs. FREQUENCY (MIC TO ADC)

10

0

-10

-20

-30

-40

-50

MCLK = 13MHz

-60

LRCLK = 8kHz

NORMALIZED GAIN (dBr1)

FREQ MODE

-70

V

= 1V

IN

AV

MICPRE_

P-P

= 0dB

-80

-90

FREQUENCY (Hz)

MODE = 1

MODE = 0

100010010 10,000

FFT, 0dBFS (MIC TO ADC)

20

0

-20

-40

-60

-80

-100

AMPLITUDE (dBFS)

-120

-140

-160

-180 0 4000

FREQUENCY (Hz)

AV

MCLK = 13MHz

LRCLK = 8kHz

FREQ MODE

= 0dB

MICPRE_

350030002000 25001000 1500500

MAX98088 toc07

CMRR (dB)

MAX98088 toc10

-100

AMPLITUDE (dBFS)

-120

-140

-160

-180

COMMON-MODE REJECTION RATIO

vs. FREQUENCY (MIC TO ADC)

70

60

50

40

30

20

10

0

MICPRE = 20dB

MICPRE = 0dB

10 100,000

FREQUENCY (Hz)

MICPRE = 30dB

MCLK = 12.288MHz

LRCLK = 48kHz

FREQ MODE

10,0001000100

FFT, -60dBFS (MIC TO ADC)

0

-20

-40

-60

-80

FREQUENCY (Hz)

MCLK = 13MHz

LRCLK = 8kHz

FREQ MODE

AV

MICPRE_

= 0dB

350030002000 25001000 15005000 4000

MAX98088 toc08

PSRR (dB)

MAX98088 toc11

AMPLITUDE (dBFS)

-100

-120

-140

POWER-SUPPLY RECTION RATIO

vs. FREQUENCY (MIC TO ADC)

10

0

-10

-20

-30

-40

-50

-60

-70

-80

-90

RIPPLE ON AVDD,

DVDD, HPVDD

RIPPLE ON SPKLVDD,

10 100,000

INPUTS AC GROUNDED

SPKRVDD

FREQUENCY (Hz)

V

RIPPLE

= 200mV

10,0001000100

FFT, 0dBFS (MIC TO ADC)

20

0

-20

-40

-60

-80

0 20,000

FREQUENCY (Hz)

MCLK = 13MHz

LRCLK = 44.1kHz

PLL MODE

= 0dB

AV

MICPRE_

15,00010,0005000

P-P

MAX98088 toc09

MAX98088 toc12

29

Stereo Audio Codec with FLEXSOUND Technology

Typical Operating Characteristics (continued)

(V

= V

AVDD

between SPK_P and SPK_N. Receiver load (R from HPL or HPR to HPGND. R C

= 1FF. AV

HPVSS

0dB, AV

PGAIN_

unless otherwise noted.)

= V

PVDD

= 0dB, AV

DVDD

MICPRE_

= V

DVDDS1

= J, R

HP

= +20dB, AV

= 0dB, AV

HP_

= V

DVDDS2

= J, Z

REC

MICPGA_

= 0dB, AV

REC

= +1.8V, V

) connected between RECP and RECN. Headphone loads (RHP) connected

REC

= J, C

SPK

= 0dB, AV

SPK_

SPKLVDD

REF

DACATTN

= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = +25NC,

= V

= 2.2FF, C

= 0dB, AV

SPKRVDD

MICBIAS

DACGAIN

= 3.7V. Speaker loads (Z

= C

= 1FF, C

REG

= 0dB, AV

C1N-C1P

ADCLVL

= 0dB, AV

) connected

SPK

= 1FF, C

ADCGAIN

MAX98088

HPVDD

= =

FFT, -60dBFS (MIC TO ADC)

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

AV

FREQUENCY (Hz)

MCLK = 12.288MHz

AV

FREQUENCY (Hz)

MCLK = 13MHz

LRCLK = 44.1kHz

PLL MODE

= 0dB

MICPRE_

15,00010,00050000 20,000

LRCLK = 48kHz

NI MODE

= 0dB

MICPRE_

15,00010,00050000 20,000

MAX98088 toc13

MAX98088 toc15

20

0

-20

-40

-60

-80

AMPLITUDE (dBFS)

-100

-120

-140 0 20,000

MCLK = 12.288MHz

AV

FREQUENCY (Hz)

LRCLK = 48kHz

MICPRE_

FFT, 0dBFS (MIC TO ADC)

20

0

-20

-40

-60

-80

AMPLITUDE (dBFS)

-100

-120

-140 0 20,000

MCLK = 12.288MHz

AV

FREQUENCY (Hz)

LRCLK = 96kHz

MICPRE_

15,00010,0005000

NI MODE

= 0dB

NI MODE

= 0dB

MAX98088 toc14

MAX98088 toc16

30