Rainbow Electronics MAX9867 User Manual

General Description

The MAX9867 is an ultra-low power stereo audio codec designed for portable consumer devices such as mobile phones and portable gaming consoles.

The device features stereo differential microphone inputs that can be connected to either analog or digital microphones. The single-ended line inputs, with configurable preamplifier, can be sent to the ADC for record or routed directly to the headphone amplifier for playback. An auxiliary ADC path can be used to track any DC voltage.

The stereo headphone amplifiers support differential, single-ended, and capacitorless output configurations. Using the capacitorless output configuration, the device can output 10mW into 32Ω headphones. Comprehensive click-and-pop circuitry suppresses audible clicks and pops during volume changes and startup or shutdown.

Utilizing Maxim’s proprietary digital circuitry, the device can accept any available 10MHz to 60MHz system clock. This architecture eliminates the need for an external PLL and multiple crystal oscillators. The stereo ADC and DAC paths provide user-configurable voiceband or audioband digital filters. Voiceband filters provide extra attenuation at the GSM packet frequency and greater than 70dB stopband attenuation at f

S/2

.

The MAX9867 operates from a single 1.8V supply, and supports a 1.65V to 3.6V logic level. An I

2

C 2-wire serial interface provides control for volume levels, signal mixing, and general operating modes.

The MAX9867 is available in a tiny 2.2mm x 2.7mm,

0.4mm-ball-pitch, WLP package. A 32-pin 5mm x 5mm TQFN package is also available.

Features

o 1.8V Single-Supply Operation

o 6.7mW Playback Power Consumption

o 90dB Stereo DAC, 8kHz ≤ fs ≤ 48kHz

o 85dB Stereo ADC, 8kHz ≤ fs ≤ 48kHz

o Battery-Measurement Auxiliary ADC

o Support for Any Master Clock Between 10MHz to

60MHz

o Stereo Digital Microphone Input Support

o Stereo Analog Differential Microphone Inputs

o Stereo Headphone Amplifiers: Differential,

Single-Ended, or Capacitorless

o Stereo Line Inputs

o Voiceband Filter with a Stopband Attenuation

Greater than 70dB

o 1.65V to 3.6V Digital Interface Supply Voltage

o I2S/TDM-Compatible Digital Audio Bus

o 30-Bump, 2.2mm x 2.7mm 0.4mm-Pitch WLP

MAX9867

Ultra-Low Power Stereo Audio Codec

________________________________________________________________

Maxim Integrated Products

1

19-4573; Rev 0; 4/09

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.

Ordering Information

+

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

*EP = Exposed pad.

Applications

Cell Phones Portable Gaming Devices Portable Navigation Devices Portable Multimedia Players Wireless Headsets

Simplified Block Diagram

PART TEMP RANGE PIN-PACKAGE

MAX9867EWV+ -40°C to +85°C 30 WLP

MAX9867ETJ+ -40°C to +85°C 32 TQFN-EP*

2

CI2S/PCM

I

DAC

CONTROL

INTERFACE

MIX

MAX9867

HEADPHONE

AMP

HEADPHONE

AMP

LEFT MIC AMP

DIGITAL MICROPHONE

INTERFACE

RIGHT MIC AMP

LINEIN 1

LINEIN 2

LEFT PREAMP

RIGHT PREAMP

MIX

DIGITAL AUDIO INTERFACE

ADC

AUDIO DIGITAL

ADC

FILTERS

MAX9867

Ultra-Low Power Stereo Audio Codec

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(V

AVDD

= V

PVDD

= V

DVDD

= V

DVDDIO

= +1.8V, RL= ∞, headphone load (RL) connected between _OUTP and _OUTN in differential

mode, C

REF

= 2.2μF, C

MICBIAS

= C

PREG

= C

REG

= 1μF, AV

PRE

= +20dB, AV

PGAM

= 0dB, AV

DAC

= 0dB, AV

LINE

= +20dB, AV

VOL

=

0dB, MCLK = 13MHz, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

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.

(Voltages with respect to AGND.)

DVDD, AVDD, and PVDD .........................................-0.3V to +2V

DVDDIO.................................................................-0.3V to +3.6V

DGND and PGND..................................................-0.1V to +0.1V

PREG, REF, REG, MICBIAS ....................-0.3V to (AVDD + 0.3V)

MCLK, LRCLK, BCLK

SDOUT, SDIN .................................-0.3V to (DVDDIO + 0.3V)

SDA, SCL, IRQ ......................................................-0.3V to +3.6V

LOUTP, LOUTN, ROUTP,

ROUTN .................................(PGND - 0.3V) to (PVDD + 0.3V)

LINL, LINR, JACKSNS/AUX, MICLP/DIGMICDATA,

MICLN/DIGMICCLK, MICRP, MICRN..-0.3V to (AVDD + 0.3V)

Continuous Power Dissipation (T

A

= +70°C)

30-Bump WLP (derate 12.5mW/°C above +70°C) ....1000mW

32-Pin TQFN-EP (derate 34.5mW/°C above +70°C) .2759mW

Junction-to-Ambient Thermal Resistance (θ

JA

) (Note 1)

30-Bump WLP .............................................................80°C/W

32-Pin TQFN-EP ..........................................................29°C/W

Operating Temp Range.......................................-40°C to +85°C

Storage Temp Range ........................................-65°C to +150°C

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial

.

Supply Voltage Range

Total Supply Current I

Shutdown Supply Current TA = +25°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

VDD

PVDD, DVDD, AVDD 1.65 1.8 1.95

DVDDIO 1.65 1.8 3.6

Full-duplex 8kHz mono (voice mode) (Note 3)

DAC playback 48kHz stereo (audio mode) (Note 3)

Full-duplex 48kHz stereo (audio mode) (Note 3)

Stereo line-in only

Analog (AVDD + PVDD)

Digital (DVDD + DVDDIO)

Analog (AVDD + PVDD)

Digital (DVDD + DVDDIO)

Analog (AVDD + PVDD)

Digital (DVDD + DVDDIO)

Analog (AVDD + PVDD)

Digital (DVDD + DVDDIO)

Analog (AVDD + PVDD)

Digital (DVDD + DVDDIO)

4.65 7

0.96 1.5

3.28 5

1.40 2

8.0 12

2.0 3

3.8 6

0.004 0.05

15

V

mA

μA

MAX9867

Ultra-Low Power Stereo Audio Codec

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(V

AVDD

= V

PVDD

= V

DVDD

= V

DVDDIO

= +1.8V, RL= ∞, headphone load (RL) connected between _OUTP and _OUTN in differential

mode, C

REF

= 2.2μF, C

MICBIAS

= C

PREG

= C

REG

= 1μF, AV

PRE

= +20dB, AV

PGAM

= 0dB, AV

DAC

= 0dB, AV

LINE

= +20dB, AV

VOL

=

0dB, MCLK = 13MHz, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Shutdown to Full Operation Excludes PLL lock time 10 ms

Soft-Start/-Stop Time 10 ms

DAC (Note 4)

Dynamic Range (Note 5) DR

f

= 48kHz, AV

S

+0dB, T

A

VOL

= +25°C

Master or slave

=

mode

Slave mode 84

90

Differential mode 1

Full-Scale Output V

Gain Error

Voice Path Phase Delay P

DLY

Total Harmonic Distortion THD

DAC Attenuation Range AV

DAC Gain Adjust AV

DAC

GAIN

Power-Supply Rejection Ratio PSRR

OLL/VOLR

DC accuracy, measured with respect to full-scale output

f = 1kH z, 0d BFS , H P fi l ter d i sab l ed , d i g i tal i np ut to anal og outp ut

MCLK = 12.288MHz, f measured at headphone outputs

DACA = 0xF to 0x0 -15 0 dB

DACG = 00 to 11 0 +18 dB

V

AVDD

f = 217Hz, V AV

f = 1kHz, V AV

f = 10kHz, V AV

VOL

= 0 x 09

= V

PVDD

= 0dB

RIPPLE

= 0dB

Capacitorless and single-ended modes

fS = 8kHz 1.2

= 16kHz 0.59

f

S

= 48kHz, 0dBFS,

S

= 1.65V to 1.95V 60 78

RIPPLE

= 100mV

P-P

,

0.56

15%

-80 dB

78

75

62

DAC VOICE MODE DIGITAL IIR LOWPASS FILTER

With respect to fS within ripple; fS = 8kHz to

Passband Cutoff f

PLP

48kHz

-3dB cutoff

Passband Ripple f < f

Stopband Cutoff f

SLP

With respect to fS; fS = 8kHz to 48kHz

Stopband Attenuation f > f

PLP

, f = 20Hz to 20kHz 75 dB

SLP

0.448 x f

S

0.451 x f

S

±0.1 dB

0.476 x f

S

V

dB

RMS

ms

dB

Hz

MAX9867

Ultra-Low Power Stereo Audio Codec

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(V

AVDD

= V

PVDD

= V

DVDD

= V

DVDDIO

= +1.8V, RL= ∞, headphone load (RL) connected between _OUTP and _OUTN in differential

mode, C

REF

= 2.2μF, C

MICBIAS

= C

PREG

= C

REG

= 1μF, AV

PRE

= +20dB, AV

PGAM

= 0dB, AV

DAC

= 0dB, AV

LINE

= +20dB, AV

VOL

=

0dB, MCLK = 13MHz, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DAC VOICE MODE DIGITAL 5th ORDER IIR HIGHPASS FILTER

DVFLT = 0x1 (elliptical tuned for 16kHz GSM + 217Hz notch)

0.0161 x f

S

5th Order Passband Cutoff (-3dB from Peak, I

2

C Register

Programmable)

5th Order Stopband Cutoff (-30dB from Peak, I

2

C Register

Programmable)

DC Attenuation DC

f

DHPPB

f

DHPSB

ATTEN

DVFLT = 0x2 (500Hz Butterworth tuned for 16kHz)

DVFLT = 0x3 (elliptical tuned for 8kHz GSM + 217Hz notch)

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

DVFLT = 0x5

/240 Butterworth)

(f

S

DVFLT = 0x1 (elliptical tuned for 16kHz GSM + 217Hz notch)

DVFLT = 0x2 (500Hz Butterworth tuned for 16kHz)

DVFLT = 0x3 (elliptical tuned for 8kHz GSM + 217Hz notch)

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

DVFLT = 0x5

/240 Butterworth)

(f

S

DVFLT ≠ 000 90 dB

0.0312 x f

S

0.0321 x f

S

0.0625 x f

S

0.0042 x f

S

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

Hz

DAC STEREO AUDIO MODE DIGITAL FIR LOWPASS FILTER

With respect to fS within ripple;

= 8kHz to 48kHz

f

S

Passband Cutoff f

PLP

-3dB cutoff

-6.02dB cutoff

Passband Ripple f < f

Stopband Cutoff f

SLP

With respect to fS; fS = 8kHz to 48kHz

PLP

0.43 x f

S

0.47 x f

S

0.50 x f

S

±0.1 dB

0.58 x f

S

Hz

Stopband Attenuation 60 dB

MAX9867

Ultra-Low Power Stereo Audio Codec

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS (continued)

(V

AVDD

= V

PVDD

= V

DVDD

= V

DVDDIO

= +1.8V, RL= ∞, headphone load (RL) connected between _OUTP and _OUTN in differential

mode, C

REF

= 2.2μF, C

MICBIAS

= C

PREG

= C

REG

= 1μF, AV

PRE

= +20dB, AV

PGAM

= 0dB, AV

DAC

= 0dB, AV

LINE

= +20dB, AV

VOL

=

0dB, MCLK = 13MHz, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DAC STEREO AUDIO MODE DIGITAL DC BLOCKING HIGHPASS FILTER

Passband Cutoff (-3dB from Peak)

DC Attenuation DC

f

DHPPB

ATTEN

DVFLT = 0x1

DVFLT = 0x1 90 dB

0.000625 x f

S

ADC (Note 6)

Dynamic Range (Note 5) DR

Full-Scale Input

Gain Error (Note 7)

Voice Path Phase Delay P

DLY

fS = 8kHz, MODE = 0 (IIR voice) 75 84

= 8kHz to 48kHz, MODE = 1 (FIR audio) 85

f

S

Differential MIC input or stereo-line inputs, AVPRE = 0dB, AVPGA = 0dB

DC accuracy, measured with respect to 80% of full-scale output

f = 1kHz, 0dBFS, HP

fS = 8kHz 1.2

filter disabled, analog input to digital output

f

= 16kHz 0.61

S

1V

15%

Total Harmonic Distortion THD f = 1kHz, fS = 8kHz, TA = +25°C, 0dBFs -81 -70 dB

ADC Level Adjust Range AV

ADC

Power-Supply Rejection Ratio PSRR

AVL/VR = 0xF to 0x0 -12 +3 dB

V

= 1.65V to 1.95V, input referred 60 85

AVDD

f = 217Hz, V input referred

f = 1kHz, V input referred

f = 10kHz, V input referred

RIPPLE

= 100mV, AV

ADC

= 0dB,

85

80

ADC VOICE MODE DIGITAL IIR LOWPASS FILTER

With respect to fS within ripple; f

= 8kHz to 48kHz

Passband Cutoff f

PLP

S

-3dB cutoff

Passband Ripple f < f

Stopband Cutoff f

SLP

With respect to fS; fS = 8kHz to 48kHz

Stopband Attenuation f > f

PLP

, f = 20Hz to 20kHz 74 dB

SLP

0.445 x f

S

0.449 x f

S

±0.1 dB

0.469 x f

S

Hz

dB

P-P

ms

dB

Hz

MAX9867

Ultra-Low Power Stereo Audio Codec

6 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(V

AVDD

= V

PVDD

= V

DVDD

= V

DVDDIO

= +1.8V, RL= ∞, headphone load (RL) connected between _OUTP and _OUTN in differential

mode, C

REF

= 2.2μF, C

MICBIAS

= C

PREG

= C

REG

= 1μF, AV

PRE

= +20dB, AV

PGAM

= 0dB, AV

DAC

= 0dB, AV

LINE

= +20dB, AV

VOL

=

0dB, MCLK = 13MHz, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

ADC VOICE MODE DIGITAL 5th ORDER IIR HIGHPASS FILTER

AVFLT = 0x1 (elliptical tuned for 16kHz GSM + 217Hz notch)

0.0161 x f

S

AVFLT = 0x2

(500Hz Butterworth tuned for 16kHz) 5th Order Passband Cutoff (-3dB from Peak, I

2

C Register

Programmable)

f

AHPPB

AVFLT = 0x3

(elliptical tuned for 8kHz GSM + 217Hz

notch)

AVFLT = 0x4

(500Hz Butterworth tuned for 8kHz)

AVFLT = 0x5

/240 Butterworth)

(f

S

AVFLT = 0x1

(elliptical tuned for 16kHz GSM + 217Hz

notch)

AVFLT = 0x2

(500Hz Butterworth tuned for 16kHz)

Stopband Cutoff (-30dB from Peak)

f

AHPSB

AVFLT = 0x3

(elliptical tuned for 8kHz GSM + 217Hz

notch)

AVFLT = 0x4

(500Hz Butterworth tuned for 8kHz)

AVFLT = 0x5

/240 Butterworth)

(f

S

DC Attenuation DC

ATTEN

AVFLT ≠ 000 90 dB

ADC STEREO AUDIO MODE DIGITAL FIR LOWPASS FILTER

With respect to fS within ripple;

= 8kHz to 48kHz

f

S

Passband Cutoff f

PLP

-3dB cutoff

-6.02dB cutoff 0.5 x f

Passband Ripple f < f

Stopband Cutoff f

SLP

Stopband Attenuation f > f

PLP

With respect to fS; fS = 8kHz to 48kHz

, f = 20Hz to 20kHz 60 dB

SLP

0.0312 x f

S

0.0321 x f

S

0.0625 x f

S

0.0042 x f

S

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

0.43 x f

S

0.48 x f

S

±0.1 dB

0.58 x f

S

Hz

MAX9867

Ultra-Low Power Stereo Audio Codec

_______________________________________________________________________________________ 7

ELECTRICAL CHARACTERISTICS (continued)

(V

AVDD

= V

PVDD

= V

DVDD

= V

DVDDIO

= +1.8V, RL= ∞, headphone load (RL) connected between _OUTP and _OUTN in differential

mode, C

REF

= 2.2μF, C

MICBIAS

= C

PREG

= C

REG

= 1μF, AV

PRE

= +20dB, AV

PGAM

= 0dB, AV

DAC

= 0dB, AV

LINE

= +20dB, AV

VOL

=

0dB, MCLK = 13MHz, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

ADC STEREO AUDIO MODE DIGITAL DC BLOCKING HIGHPASS FILTER

Passband Cutoff (-3dB from Peak)

DC Attenuation DC

f

AHPPB

ATTEN

AVFLT = 0x1

AVFLT = 0x1 90 dB

OUTPUT VOLUME CONTROL

VOLL/VOLR = 0x00 14.55 14.9 15.15

VOLL/VOLR = 0x01 14.1 14.4 14.6

VOLL/VOLR = 0x02 13.6 13.9 14.1

Line Input to Output Volume Control

AV

VOL

VOLL/VOLR = 0x04 12.6 12.9 13.1

VOLL/VOLR = 0x08 9.35 9.9 10.35

VOLL/VOLR = 0x10 0.35 0.9 1.35

VOLL/VOLR = 0x20 -50.15 -49.2 -48.15

VOLL/VOLR = 0x00 to 0x06 (+6dB to +3dB) 0.5

Output Volume Control Step Size

VOLL/VOLR = 0x06 to 0x0F (+3dB to -6dB) 1

VOLL/VOLR = 0x0F to 0x17 (-6dB to -22dB) 2

V O LL/V O LR = 0x17 to 0x3F ( - 22d B to m ute) 4

Output Volume Control Mute Attenuation

f = 1kHz 100 dB

HEADPHONE AMPLIFIER (Note 8)

Output Power per Channel (Differential Mode)

Output Power per Channel (Capacitorless Mode)

Total Harmonic Distortion + Noise (Differential Mode)

Total Harmonic Distortion + Noise (Capacitorless Mode)

Total Harmonic Distortion + Noise (SE Mode)

P

OUT

P

OUT

THD+N

Dynamic Range DR AV

f = 1kHz, THD < 1%, T

= +25°C

A

f = 1kHz, THD < 1%, T

= +25°C

A

RL = 16Ω, P

R

= 32Ω, P

L

= 25mW, f = 1kHz -76

OUT

=

OUT

25mW, f = 1kHz

RL = 16Ω, P

R

= 32Ω, P

L

= 6.25mW, f = 1kHz -72

OUT

=

OUT

6.25mW, f = 1kHz

RL = 16Ω, P

R

= 32Ω, P

L

= 6.25mW, f = 1kHz -74

OUT

=

OUT

6.25mW, f = 1kHz

= +6dB (Notes 5, 7) 76 90 dB

VOL

0.000625 x f

S

RL = 16Ω 30 52

R

= 32Ω 32

L

RL = 16Ω 19

R

= 32Ω 810

L

MCLK = 13MHz,

= 8kHz

f

S

MCLK = 12.288MHz,

= 48kHz

f

S

MCLK = 13MHz,

= 8kHz

f

S

MCLK = 12.288MHz,

= 48kHz

f

S

MCLK = 13MHz,

= 8kHz

f

S

MCLK = 12.288MHz, f

= 48kHz

S

-77 -70

-80

-74 -65

-74

-74 -65

-76

Hz

dB

mW

dB

MAX9867

Ultra-Low Power Stereo Audio Codec

8 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(V

AVDD

= V

PVDD

= V

DVDD

= V

DVDDIO

= +1.8V, RL= ∞, headphone load (RL) connected between _OUTP and _OUTN in differential

mode, C

REF

= 2.2μF, C

MICBIAS

= C

PREG

= C

REG

= 1μF, AV

PRE

= +20dB, AV

PGAM

= 0dB, AV

DAC

= 0dB, AV

LINE

= +20dB, AV

VOL

=

0dB, MCLK = 13MHz, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

V

= V

AVDD

f = 217Hz, V

= 0dB

AV

Power-Supply Rejection Ratio (Note 7)

PSRR

VOL

f = 1kHz, V

= 0dB

AV

VOL

f = 10kHz, V AV

= 0dB

VOL

AV

= -84dB

VOL

differential mode

Output Offset Voltage V

OS

AV

VOL

= -84dB capacitorless mode

Differential mode, P

Capacitorless

Crosstalk X

TALK

mode, P

OUT

= 5mW,

f = 1kHz

Capacitive Drive

Click-and-Pop Level (Differential, Capacitorless Modes)

No sustained oscillations

Peak voltage, A-weighted, 32 samples per second

Peak voltage,

Click-and-Pop Level (SE Mode)

A-weighted, 32 samples per second

MICROPHONE AMPLIFIER

PALEN/PAREN = 01 -0.5 0 +0.5

Preamplifier Gain AV

PALEN/PAREN = 10 19.5 20 20.5

PRE

PALEN/PAREN = 11 29.5 30 30.5

MIC PGA Gain AV

PGAM

PGAML/PGAMR = 0x1F -0.6 -0.1 +0.4

PGAML/PGAMR = 0x00 19.3 19.75 20.3

Common-Mode Rejection Ratio CMRR VIN = 100mV

MIC Input Resistance R

IN_MIC

All gain settings 30 50 kΩ

= 1.65V to 1.95V 60 78

PVDD

= 100mV

RIPPLE

= 100mV

RIPPLE

= 100mV

RIPPLE

P-P

,

P-P

,

(LOUTP–LOUTN, ROUTP–ROUTN), T

= +25°C

A

(LOUTP–LOUTN, ROUTP–LOUTN), T

= +25°C

A

= 5mW, f = 1kHz 87

OUT

TQFN 55

WLP 60

RL = 32Ω 500

R

= ∞ 100

L

Into shutdown -80

Out of shutdown -69

Into shutdown -75

Out of shutdown -75

, f = 217Hz 50 dB

P-P

78

75

62

±0.2 ±1.3

±0.8 ±3

dB

mV

dB

pF

dBV

dB

MAX9867

Ultra-Low Power Stereo Audio Codec

_______________________________________________________________________________________ 9

ELECTRICAL CHARACTERISTICS (continued)

(V

AVDD

= V

PVDD

= V

DVDD

= V

DVDDIO

= +1.8V, RL= ∞, headphone load (RL) connected between _OUTP and _OUTN in differential

mode, C

REF

= 2.2μF, C

MICBIAS

= C

PREG

= C

REG

= 1μF, AV

PRE

= +20dB, AV

PGAM

= 0dB, AV

DAC

= 0dB, AV

LINE

= +20dB, AV

VOL

=

0dB, MCLK = 13MHz, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

AV

= 0dB,

Total Harmonic Distortion + Noise THD+N

Power-Supply Rejection Ratio PSRR

PRE

V

= 1V

IN

AV

PRE

V

= 32mV

IN

(1V

P-P

V

AVDD

f = 217Hz, V AV

ADC

f = 1kHz, V AV

ADC

f = 10kHz, V AV

ADC

, f = 1kHz

P-P

= +30dB,

, f = 1kHz,

P-P

at ADC input)

= 1.65V to 1.95V, input referred 60 85

= 100mV,

RIPPLE

= 0dB, input referred

= 100mV,

RIPPLE

= 0dB, input referred

= 100mV,

RIPPLE

= 0dB, input referred

-80

-67

85

80

MICROPHONE BIAS

Output Voltage V

MICBIASVAVDD

Load Regulation I

Line Regulation V

Power-Supply Rejection Ratio PSRR

= 1.8V, I

= 1mA to 2mA 0.2 10 V/A

LOAD

= 1.65V to 1.95V 10 μV/V

AVDD

f = 217Hz, V

f = 10kHz, V

RIPPLE

= 1mA 1.5 1.525 1.55 V

LOAD

= 100mV

P-P

85

81

Noise Voltage A-weighted 9.1 μV

LINE INPUT

Full-Scale Input V

Line Input Level Adjust Range AV

LINE

AV

IN

= 0dB 1.0 V

LINE

LIGL/LIGR = 0xF to 0x0 -6.5 +24.5 dB

Line Input Mute Attenuation f = 1kHz 100 dB

Input Resistance R

IN_LINE

Total Harmonic Distortion + Noise THD+N VIN = 0.1V

AV

= +24dB 20 kΩ

LINE

, f = 1kHz, differential output -83 dB

P-P

AUXIN INPUT

Input DC Voltage Range AUXEN = 1 0 0.738 V

AUXIN Input Resistance RIN AUXEN = 1, 0V ≤ AUXIN ≤ 0.738 10 40 MΩ

JACK SENSE OPERATION

Threshold VTH

JDETEN = 1, SHDN = 1, JACKSNS

JDETEN = 1, SHDN = 0, JACKSNS, LOUTP

JDETEN = 1, SHDN = 1, JACKSNS = GND

0.92 x

MICBIAS

AVDD -

0.8

0.95 x

MICBIAS

AVDD -

0.4

4

0.98 x

MICBIAS

AVDD -

0.15

Pullup Current IPU

JDETEN = 1, SHDN = 0, JACKSNS = LOUTP = GND

420

Pullup Voltage JDETEN = 1, JACKSNS, LOUTP AVDD V

dB

RMS

P-P

V

μA

MAX9867

Ultra-Low Power Stereo Audio Codec

10 ______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(V

AVDD

= V

PVDD

= V

DVDD

= V

DVDDIO

= +1.8V, RL= ∞, headphone load (RL) connected between _OUTP and _OUTN in differential

mode, C

REF

= 2.2μF, C

MICBIAS

= C

PREG

= C

REG

= 1μF, AV

PRE

= +20dB, AV

PGAM

= 0dB, AV

DAC

= 0dB, AV

LINE

= +20dB, AV

VOL

=

0dB, MCLK = 13MHz, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DIGITAL SIDETONE

Sidetone Gain Adjust Range AV

Voice Path Phase Delay P

STGA

DLY

Differential output mode, DVST = 0x1F to 0x01

MIC input to headphone output, f = 1kHz, HP filter disabled, f

= 8kHz

S

-60 0 dB

2.2 ms

INPUT CLOCK CHARACTERISTICS

MCLK Input Frequency f

MCLK Input Duty Cycle

Maximum MCLK Input Jitter

MCLK

For any LRCLK sample rate 10 60 MHz

Prescaler = /1 mode 40 60

/2 or /4 modes 30 70

Maximum allowable RMS for performance limits

100 ps

LRCLK Sample Rate Range 8 48 kHz

Rapid lock mode 2 7

Nonrapid lock mode

12 25

LRCLK PLL Lock Time

LRCLK Acceptable Jitter for Maintaining PLL Lock

Any allowable LRCLK and PCLK rate, slave mode

Allowable LRCLK period change from nominal for slave PLL mode at any allowable LRCLK and PCLK rates

FREQ = 0x8 through 0xF 0 0 %

LRCLK Average Frequency Error (Master and Slave Modes) (Note 9)

PCLK = 192xfS, 256xfS, 384xfS, 512xfS, 768xf

, and 1024xf

S

00

All other modes -0.025 +0.025

DIGITAL INPUT (MCLK)

Input High Voltage V

Input Low Voltage V

Input Leakage Current IIH, I

IH

IL

TA = +25°C ±1 μA

IL

1.2 V

Input Capacitance 10 pF

DIGITAL INPUTS (SDIN, BCLK, LRCLK)

Input High Voltage V

Input Low Voltage V

IH

IL

0.7 x

DVDDIO

0.3 x

DVDDIO

Input Hysteresis 200 mV

Input Leakage Current IIH, I

TA = +25°C ±1 μA

IL

Input Capacitance 10 pF

%

ms

±100 ns

0.6 V

RMS

V

MAX9867

Ultra-Low Power Stereo Audio Codec

______________________________________________________________________________________ 11

ELECTRICAL CHARACTERISTICS (continued)

(V

AVDD

= V

PVDD

= V

DVDD

= V

DVDDIO

= +1.8V, RL= ∞, headphone load (RL) connected between _OUTP and _OUTN in differential

mode, C

REF

= 2.2μF, C

MICBIAS

= C

PREG

= C

REG

= 1μF, AV

PRE

= +20dB, AV

PGAM

= 0dB, AV

DAC

= 0dB, AV

LINE

= +20dB, AV

VOL

=

0dB, MCLK = 13MHz, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DIGITAL INPUTS (SDA, SCL)

Input High Voltage V

Input Low Voltage V

IH

IL

0.7 x

DVDD

0.3 x

DVDD

Input Hysteresis 200 mV

Input Leakage Current IIH, I

TA = +25°C ±1 μA

IL

Input Capacitance 10 pF

DIGITAL INPUT (DIGMICDATA)

Input High Voltage V

Input Low Voltage V

IH

IL

0.65 x DVDD

0.35 x DVDD

Input Hysteresis 100 mV

Input Leakage Current IIH, I

TA = +25°C ±35 μA

IL

Input Capacitance 10 pF

CMOS DIGITAL OUTPUTS (BCLK, LRCLK, SDOUT)

Output Low Voltage V

Output High Voltage V

OL

OH

IOL = 3mA 0.4 V

IOH = 3mA

DVDDIO

- 0.4

CMOS DIGITAL OUTPUT (DIGMICCLK)

Output Low Voltage V

Output High Voltage V

OL

OH

IOL = 1mA 0.4 V

IOH = 1mA

DVDD -

0.4

OPEN-DRAIN DIGITAL OUTPUTS (SDA, IRQ)

Output High Current I

Output Low Voltage V

OH

OL

DIGITAL MICROPHONE TIMING CHARACTERISTICS (V

DIGMICCLK Divide Ratio f

DIGMICDATA to DIGMICCLK Setup Time

DIGMICDATA to DIGMICCLK Hold Time

MICCLK

t

SU,MIC

t

HD,MIC

DIGITAL AUDIO INTERFACE TIMING CHARACTERISTICS (V

t

Minimum BCLK Cycle Time

BCLKS

t

BCLKM

V

= DVDD, TA = +25°C 1 μA

OUT

IOL = 3mA

DVDD

= 1.65V)

0.2 x

DVDD

MICCLK = 00 PCLK/8

MICCLK = 01 PCLK/6

Either clock edge 20 ns

Either clock edge 0 ns

= 1.65V)

DVDD

Slave operation 75 ns

Master operation 325 ns

V

MHz

MAX9867

Ultra-Low Power Stereo Audio Codec

12 ______________________________________________________________________________________

Note 2: The MAX9867 is 100% production tested at TA= +25°C. Specifications over temperature limits are guaranteed by design. Note 3: Clocking all zeros into the DAC, master mode, and differential headphone mode. Note 4: DAC performance measured at the headphone outputs. Note 5: Dynamic range measured using the EIAJ method. -60dBFS 1kHz output signal, A-weighted, and normalized to 0dBFS.

f = 20Hz to 20kHz.

Note 6: Performance measured using microphone inputs, unless otherwise stated. Note 7: Performance measured using line inputs. Note 8: Performance measured using DAC, unless otherwise stated. LRCLK = 8kHz, unless otherwise stated. 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.

ELECTRICAL CHARACTERISTICS (continued)

(V

AVDD

= V

PVDD

= V

DVDD

= V

DVDDIO

= +1.8V, RL= ∞, headphone load (RL) connected between _OUTP and _OUTN in differential

mode, C

REF

= 2.2μF, C

MICBIAS

= C

PREG

= C

REG

= 1μF, AV

PRE

= +20dB, AV

PGAM

= 0dB, AV

DAC

= 0dB, AV

LINE

= +20dB, AV

VOL

=

0dB, MCLK = 13MHz, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Minimum BCLK High Time t

Minimum BCLK Low Time t

BCLK or LRCLK Rise and Fall

BCLKH

BCLKL

t

SDIN or LRCLK to BCLK Setup Time

SDIN or LRCLK to BCLK Hold Time

SDOUT Delay Time from BCLK Rising Edge

I2C TIMING CHARACTERISTICS (V

t

DVDD

Serial-Clock Frequency f

Bus Free Time Between STOP and START Conditions

Hold Time (REPEATED) START Condition

t

HD,STA

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

HIGH

t

SU,STA

HD,DATRPU,SDA

SU,DAT

SDA and SCL Receiving Rise Time

SDA and SCL Receiving Fall Time

SDA Transmitting Fall Time t

Setup Time for STOP Condition t

SU,STO

Bus Capacitance C

Pulse Width of Suppressed Spike t

, t

R

F

t

SU

t

HD

DLY

= 1.65V)

SCL

BUF

LOW

t

R

t

F

B

SP

Slave operation 30 ns

Master operation, CL = 15pF 7 ns

CL = 30pF 0 40 ns

= 475Ω 0 900 ns

(Note 10)

R

PU,SDA

= 475Ω

(Note 10)

20 ns

0ns

0 400 kHz

1.3 μs

0.6 μs

1.3 μs

0.6 μs

100 ns

20 +

0.1C

20 +

0.1C

20 +

0.1C

B

300 ns

250 ns

0.6 μs

400 pF

050ns

MAX9867

Ultra-Low Power Stereo Audio Codec

______________________________________________________________________________________ 13

Typical Operating Characteristics

(V

AVDD

= V

DVDD

= V

PVDD

= +1.8V, C

REF

= 2.2µF, C

MICBIAS

= C

PREG

= C

REG

= 1µF, AV

MICPGA

= 0dB, MCLK = 13MHz, LRCLK =

8kHz, BW = 20Hz to fS/2, TA= +25°C, unless otherwise noted.)

TOTAL HARMONIC DISTORTION + NOISE

vs. POWER OUT (DAC TO HEADPHONE)

0

MCLK = 13MHz

-10

LRCLK = 8kHz

= 32Ω

R

LOAD

-20 DIFFERENTIAL MODE

-30

-40

-50

THD+N (dB)

-60

-70

-80

-90

3kHz

20Hz

035

1510 3052520

POWER OUT (mW)

1kHz

MAX9867 toc01

TOTAL HARMONIC DISTORTION + NOISE

vs. POWER OUT (DAC TO HEADPHONE)

0

MCLK = 12.288MHz

-10

LRCLK = 48kHz

= 16Ω

-20

-30

-40

-50

THD+N (dB)

-60

-70

-80

-90

0

R

LOAD

DIFFERENTIAL MODE

6kHz

20Hz

POWER OUT (mW)

1kHz

50402010 30 60

MAX9867 toc04

TOTAL HARMONIC DISTORTION + NOISE

vs. POWER OUT (DAC TO HEADPHONE)

0

MCLK = 13MHz

-10

LRCLK = 8kHz

= 16Ω

R

LOAD

-20 DIFFERENTIAL MODE

-30

-40

-50

THD+N (dB)

-60

-70

-80

-90

3kHz

20Hz

0

TOTAL HARMONIC DISTORTION + NOISE

vs. FREQUENCY (DAC TO HEADPHONE)

0

MCLK = 13MHz

-10

LRCLK = 8kHz

= 32Ω

R

LOAD

-20 DIFFERENTIAL MODE

-30

-40

-50

THD+N (%)

-60

-70

-80

-90

10 10,000

POWER OUT (mW)

5mW

FREQUENCY (Hz)

1kHz

1000100

50402010 30 60

20mW

MAX9867 toc02

MAX9867 toc05

TOTAL HARMONIC DISTORTION + NOISE

vs. POWER OUT (DAC TO HEADPHONE)

0

MCLK = 12.288MHz

-10

LRCLK = 48kHz

= 32Ω

R

LOAD

-20 DIFFERENTIAL MODE

-30

-40

-50

THD+N (dB)

-60

-70

-80

-90

6kHz

20Hz

035

1510 3052520

POWER OUT (mW)

1kHz

TOTAL HARMONIC DISTORTION + NOISE

vs. FREQUENCY (DAC TO HEADPHONE)

0

MCLK = 13MHz

-10

LRCLK = 8kHz

= 16Ω

R

LOAD

-20 DIFFERENTIAL MODE

-30

-40

-50

THD+N (%)

-60

-70

-80

-90

10 10,000

5mW

20mW

1000100

FREQUENCY (Hz)

MAX9867 toc03

MAX9867 toc06

TOTAL HARMONIC DISTORTION + NOISE

vs. FREQUENCY (DAC TO HEADPHONE)

0

MCLK = 12.288MHz

-10

LRCLK = 48kHz

= 32Ω

R

LOAD

-20 DIFFERENTIAL MODE

-30

-40

-50

THD+N (%)

-60

-70

-80

-90

10 1000 100,000

5mW

20mW

100 10,000

FREQUENCY (Hz)

MAX9867 toc07

TOTAL HARMONIC DISTORTION + NOISE

vs. FREQUENCY (DAC TO HEADPHONE)

0

MCLK = 12.288MHz

-10

LRCLK = 48kHz

= 16Ω

R

LOAD

-20 DIFFERENTIAL MODE

-30

-40

-50

THD+N (%)

-60

-70

-80

-90

10 1000 100,000

5mW

20mW

100 10,000

FREQUENCY (Hz)

MAX9867 toc08

TOTAL HARMONIC DISTORTION + NOISE

vs. POWER OUT (DAC TO HEADPHONE)

0

MCLK = 13MHz

-10

LRCLK = 8kHz

= 32Ω

R

LOAD

-20 CAPACITORLESS MODE

-30

-40

-50

THD+N (dB)

-60

-70

-80

-90

3kHz

20Hz

0

410682

POWER OUT (mW)

MAX9867 toc09

1kHz

MAX9867

Ultra-Low Power Stereo Audio Codec

14 ______________________________________________________________________________________

Typical Operating Characteristics (continued)

(V

AVDD

= V

DVDD

= V

PVDD

= +1.8V, C

REF

= 2.2μF, C

MICBIAS

= C

PREG

= C

REG

= 1μF, AV

MICPGA

= 0dB, MCLK = 13MHz, LRCLK =

8kHz, BW = 20Hz to f

S

/2, TA= +25°C, unless otherwise noted.)

TOTAL HARMONIC DISTORTION + NOISE

vs. POWER OUT (DAC TO HEADPHONE)

0

MCLK = 12.288MHz

-10

LRCLK = 48kHz

= 32

R

Ω

LOAD

-20 CAPACITORLESS MODE

-30

-40

-50

THD+N (dB)

-60

-70

-80

-90

6kHz

20Hz

0

POWER OUT (mW)

1kHz

81042126

MAX9867 toc10

TOTAL HARMONIC DISTORTION + NOISE

vs. FREQUENCY (DAC TO HEADPHONE)

0

MCLK = 13MHz

-10

LRCLK = 8kHz

= 32

R

Ω

LOAD

-20 CAPACITORLESS MODE

-30

-40

-50

THD+N (%)

-60

-70

-80

-90

10 10,000

1mW

1000100

FREQUENCY (Hz)

5mW

MAX9867 toc11

TOTAL HARMONIC DISTORTION + NOISE

vs. FREQUENCY (DAC TO HEADPHONE)

0

MCLK = 12.288MHz

-10

LRCLK = 48kHz

= 32

R

Ω

LOAD

-20 CAPACITORLESS MODE

-30

-40

-50

THD+N (%)

-60

-70

-80

-90

10 1000 100,000

1mW

5mW

100 10,000

FREQUENCY (Hz)

MAX9867 toc12

TOTAL HARMONIC DISTORTION + NOISE

vs. POWER OUT (DAC TO HEADPHONE)

0

MCLK = 13MHz

-10

LRCLK = 8kHz

-20

-30

-40

-50

THD+N (dB)

-60

-70

-80

-90 0

= 32Ω, C

R

LOAD

SINGLE-ENDED MODE

20Hz

OUT

1kHz

410682

POWER OUT (mW)

= 220μF

3kHz

TOTAL HARMONIC DISTORTION + NOISE

vs. FREQUENCY (DAC TO HEADPHONE)

0

MCLK = 13MHz

-10

LRCLK = 8kHz

= 32Ω, C

R

LOAD

-20

SINGLE-ENDED MODE

SPECIFIED AT 1kHz

P

OUT

-30

-40

-50

THD+N (%)

-60

-70

-80

-90

10 1000 100,000

= 220μF

OUT

1mW

5mW

100 10,000

FREQUENCY (Hz)

MAX9867 toc13

MAX9867 toc16

TOTAL HARMONIC DISTORTION + NOISE

vs. POWER OUT (DAC TO HEADPHONE)

0

MCLK = 12.288MHz

-10

LRCLK = 48kHz

-20

-30

-40

-50

THD+N (dB)

-60

-70

-80

-90 0

= 32Ω, C

R

LOAD

SINGLE-ENDED MODE

20Hz

= 220μF

OUT

6kHz

1kHz

POWER OUT (mW)

MAX9867 toc14

810426 12

TOTAL HARMONIC DISTORTION + NOISE

vs. POWER OUT (LINE IN TO HEADPHONE)

0

LINE IN PREAMP = +18dB

= 32

R

-10

-20

-30

-40

THD+N (dB)

-50

-60

-70

-80 050

Ω

LOAD

DIFFERENTIAL MODE

20Hz

POWER OUT (mW)

MAX9867 toc17

1kHz

6kHz

402515 2010 4535305

TOTAL HARMONIC DISTORTION + NOISE

vs. FREQUENCY (DAC TO HEADPHONE)

0

MCLK = 13MHz

-10

LRCLK = 8kHz

= 32Ω, C

R

LOAD

-20 SINGLE-ENDED MODE

SPECIFIED AT 1kHz

P

OUT

-30

-40

-50

THD+N (%)

-60

-70

-80

-90

10 10,000

TOTAL HARMONIC DISTORTION + NOISE

vs. POWER OUT (LINE IN TO HEADPHONE)

0

LINE IN PREAMP = 0dB

-10

-20

-30

-40

-50

THD+N (dB)

-60

-70

-80

-90

= 32

R

LOAD

DIFFERENTIAL MODE

6kHz

040

= 220μF

OUT

1mW

FREQUENCY (Hz)

Ω

POWER OUT (mW)

MAX9867 toc15

5mW

1000100

MAX9867 toc18

20Hz

1kHz

2510 20 3530155

MAX9867

Ultra-Low Power Stereo Audio Codec

______________________________________________________________________________________ 15

Typical Operating Characteristics (continued)

(V

AVDD

= V

DVDD

= V

PVDD

= +1.8V, C

REF

= 2.2μF, C

MICBIAS

= C

PREG

= C

REG

= 1μF, AV

MICPGA

= 0dB, MCLK = 13MHz, LRCLK =

8kHz, BW = 20Hz to f

S

/2, TA= +25°C, unless otherwise noted.)

TOTAL HARMONIC DISTORTION + NOISE

vs. FREQUENCY (LINE IN TO HEADPHONE)

0

LINE IN PREAMP = +18dB

-10

-20

-30

-40

-50

THD+N (dB)

-60

-70

-80

-90

= 32

R

Ω

LOAD

DIFFERENTIAL MODE

5mW

20mW

100 10,000

10 1000 100,000

POWER OUT vs. HEADPHONE LOAD

30

25

20

15

POWER OUT (mW)

10

5

0

1 100 1000

HEADPHONE LOAD (Ω)

FREQUENCY (Hz)

MCLK = 12.288MHz LRCLK = 48kHz THD+N = < 0.1% CAPACITORLESS MODE

10

MAX9867 toc19

MAX9867 toc22

TOTAL HARMONIC DISTORTION + NOISE

vs. FREQUENCY (LINE IN TO HEADPHONE)

0

-10

-20

-30

-40

-50

THD+N (dB)

-60

-70

-80

-90 10 1000 100,000

25

20

15

10

POWER OUT (mW)

5

0

1 100 1000

LINE IN PREAMP = +18dB

= 32

R

Ω

LOAD

DIFFERENTIAL MODE

5mW

100 10,000

20mW

FREQUENCY (Hz)

POWER OUT vs. HEADPHONE LOAD

MCLK = 12.288MHz LRCLK = 48kHz THD+N = < 0.1% SINGLE-ENDED MODE

10

HEADPHONE LOAD (Ω)

MAX9867 toc20

MAX9867 toc23

POWER OUT vs. HEADPHONE LOAD

60

50

40

30

POWER OUT (mW)

20

10

0

1 100 1000

MCLK = 12.288MHz LRCLK = 48kHz THD+N = < 0.1% DIFFERENTIAL MODE

10

HEADPHONE LOAD (Ω)

TOTAL HARMONIC DISTORTION + NOISE vs. FREQUENCY (MICROPHONE TO ADC)

0

MCLK = 13MHz

-10

LRCLK = 8kHz MICPRE = 0dB

-20 = 1V

V

IN

-30

-40

-50

THD+N (%)

-60

-70

-80

-90

P-P

10 10,000

FREQUENCY (Hz)

1000100

MAX9867 toc21

MAX9867 toc24

TOTAL HARMONIC DISTORTION + NOISE vs. FREQUENCY (MICROPHONE TO ADC)

0

MCLK = 13MHz

-10

LRCLK = 8kHz MICPRE = 20dB

-20 = 0.11V

V

IN

-30

-40

-50

THD+N (%)

-60

-70

-80

-90

10 10,000

P-P

1000100

FREQUENCY (Hz)

MAX9867 toc25

TOTAL HARMONIC DISTORTION + NOISE

vs. FREQUENCY (MICROPHONE TO ADC)

0

MCLK = 13MHz

-10

LRCLK = 8kHz MICPRE = 30dB

-20 = 0.032V

V

IN

-30

-40

-50

THD+N (%)

-60

-70

-80

-90

10 10,000

P-P

1000100

FREQUENCY (Hz)

MAX9867 toc26

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY (DAC TO HEADPHONE)

0

V

= 100mV

RIPPLE

-10

MCLK = 13MHz LRCLK = 8kHz

-20

-30

-40

-50

PSRR (dB)

-60

-70

-80

-90 10 1000 100,000

P-P

100 10,000

FREQUENCY (Hz)

MAX9867 toc27

MAX9867

Ultra-Low Power Stereo Audio Codec

16 ______________________________________________________________________________________

Typical Operating Characteristics (continued)

(V

AVDD

= V

DVDD

= V

PVDD

= +1.8V, C

REF

= 2.2μF, C

MICBIAS

= C

PREG

= C

REG

= 1μF, AV

MICPGA

= 0dB, MCLK = 13MHz, LRCLK =

8kHz, BW = 20Hz to f

S

/2, TA= +25°C, unless otherwise noted.)

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY (MIC TO ADC)

0

V

= 100mV

RIPPLE

-10

MCLK = 13MHz LRCLK = 8kHz

-20

-30

-40

-50

PSRR (dB)

-60

-70

-80

-90 10 100 1000

P-P

FREQUENCY (Hz)

MAX9867 toc28

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY (MICBIAS)

0

V

= 100mV

RIPPLE

-10

-20

-30

-40

-50

PSRR (dB)

-60

-70

-80

-90 10 100 1000

P-P

FREQUENCY (Hz)

MAX9867 toc29

FFT, DAC TO HEADPHONE,

0dBFS, MCLK = 13MHz, LRCLK = 8kHz

20

FREQ = 0xA

0

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140 061218

FREQUENCY (kHz)

MAX9867 toc30

20281016414

FFT, DAC TO HEADPHONE,

-60dBFS, MCLK = 13MHz, LRCLK = 8kHz

20

FREQ = 0xA

0

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140 0 6 12 18

FREQUENCY (kHz)

FFT, DAC TO HEADPHONE,

0dBFS, MCLK = 13MHz, LRCLK = 48kHz

20

PLL MODE

0

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140 0 6 12 18

FREQUENCY (kHz)

MAX9867 toc31

202 8 10 16414

MAX9867 toc34

202 8 10 16414

FFT, DAC TO HEADPHONE,

0dBFS, MCLK = 12.288MHz, LRCLK = 48kHz

20

NI = 6000

0

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140 0 6 12 18

FREQUENCY (kHz)

FFT, DAC TO HEADPHONE,

-60dBFS, MCLK = 13MHz, LRCLK = 48kHz

20

PLL MODE

0

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140 0 6 12 18

FREQUENCY (kHz)

MAX9867 toc32

202 8 10 16414

MAX9867 toc35

202 8 10 16414

-60dBFS, MCLK = 12.288MHz, LRCLK = 48kHz

FFT, DAC TO HEADPHONE,

20

NI = 6000

0

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140 061218

FREQUENCY (kHz)

FFT, DAC TO HEADPHONE,

0dBFS, MCLK = 13MHz, LRCLK = 44.1kHz

20

PLL MODE

0

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140 061218

FREQUENCY (kHz)

MAX9867 toc33

20281016414

MAX9867 toc36

20281016414

MAX9867

Ultra-Low Power Stereo Audio Codec

______________________________________________________________________________________ 17

Typical Operating Characteristics (continued)

(V

AVDD

= V

DVDD

= V

PVDD

= +1.8V, C

REF

= 2.2μF, C

MICBIAS

= C

PREG

= C

REG

= 1μF, AV

MICPGA

= 0dB, MCLK = 13MHz, LRCLK =

8kHz, BW = 20Hz to f

S

/2, TA= +25°C, unless otherwise noted.)

FFT, DAC TO HEADPHONE, -60dBFS,

MCLK = 13MHz, LRCLK = 44.1kHz

20

PLL MODE

0

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140 0 6 12 18

FREQUENCY (kHz)

FFT, MICROPHONE TO ADC,

0dBFS, MCLK = 12.288MHz, LRCLK = 48kHz

20

NI = 6000

0

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140 0 6 12 18

FREQUENCY (kHz)

202 8 10 16414

FFT, MICROPHONE TO ADC,

0dBFS, MCLK = 13MHz, LRCLK = 8kHz

20

FREQ = 0xA

MAX9867 toc37

0

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140 1000 3000

0 2000 4000500 25001500 3500

FFT, MICROPHONE TO ADC,

-60dBFS, MCLK = 12.288MHz, LRCLK = 48kHz

20

NI = 6000

MAX9867 toc40

0

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140

0 6 12 18

FREQUENCY (Hz)

FREQUENCY (kHz)

202 8 10 16414

MAX9867 toc38

MAX9867 toc41

FFT, MICROPHONE TO ADC,

-60dBFS, MCLK = 13MHz, LRCLK = 8kHz

20

FREQ = 0xA

0

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140 1000 3000

0 2000 4000500 25001500 3500

FREQUENCY (Hz)

FFT, MICROPHONE TO ADC,

0dBFS, MCLK = 13MHz, LRCLK = 48kHz

20

PLL MODE

0

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140

061218

FREQUENCY (kHz)

MAX9867 toc39

MAX9867 toc42

20281016414

FFT, MICROPHONE TO ADC,

-60dBFS, MCLK = 13MHz, LRCLK = 48kHz

20

PLL MODE

0

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140 0 6 12 18

FREQUENCY (kHz)

MAX9867 toc43

202 8 10 16414

WIDEBAND FFT, DAC TO HEADPHONE,

0dBFS, MCLK = 13MHz, LRCLK = 8kHz

0

FREQ = 0xA

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140 0 60 12020 80

40 100

FREQUENCY (kHz)

MAX9867 toc44

WIDEBAND FFT, DAC TO HEADPHONE,

-60dBFS, MCLK = 13MHz, LRCLK = 8kHz

20

FREQ = 0xA

0

-20

-40

-60

-80

AMPLITUDE (dB)

-100

-120

-140 06012020 80

40 100

FREQUENCY (kHz)

MAX9867 toc45