MAXIM MAX98088 Technical data

EVALUATION KIT AVAILABLE

19-5335; Rev 1; 6/11

MAX98088

Stereo Audio Codec

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.

Two differential analog microphone inputs are available as well as support for two PDM digital microphones. Integrated switches allow for an additional microphone input as well as microphone signals to be routed out to external devices. Two flexible single-ended or differential line inputs may be connected to an FM radio or other sources.

Integrated FlexSoundK technology improves loudspeaker performance by optimizing the signal level and frequency response while limiting the maximum distortion and power at the output to prevent speaker damage. Automatic gain control (AGC) and a noise gate optimize the signal level of microphone input signals to make best use of the ADC dynamic range.

The device is fully specified over the -40NC to +85NC extended temperature range.

FlexSound is a trademark of Maxim Integrated Products, Inc.

Features

S 5.6mW Power Comsumption (DAC to HP at 97dB DR) S 101dB DR Stereo DAC (8kHz < fS < 96kHz) S 93dB DR Stereo ADC (8kHz < fS < 96kHz) S Stereo Low EMI Class D Amplifiers

950mW/Channel (8I, V

SPKVDD�

= 4.2V)

S Efficient Class H Headphone Amplifier S Differential Receiver Amplifier/Stereo Line Outputs S 2 Stereo Single-Ended/Mono Differential Line

Inputs

S 3 Differential Microphone Inputs S FlexSound Technology

5-Band Parametric EQ Automatic Level Control (ALC) Excursion Limiter Speaker Power Limiter Speaker Distortion Limiter Microphone Automatic Gain Control and Noise Gate

S Dual I2S/PCM/TDM Digital Audio Interfaces S Asynchronous Digital Mixing S Supports Master Clock Frequencies from 10MHz

to 60MHz

S RF Immune Analog Inputs and Outputs S Extensive Click-and-Pop Reduction Circuitry S Available in 63-Bump WLP Package (3.80mm x

3.30mm, 0.4mm Pitch)

Ordering Information appears at end of data sheet.

For related parts and recommended products to use with this part, refer to www.maxim-ic.com/MAX98088.related.

Simplified Block Diagram

2

I2S/PCM

S/PCM

I

AUDIO

TECHNOLOGY

MAX98088

DIGITAL

AUDIO

INTERFACE

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

RECEIVER/LINEOUT AMPS

DAC

SPEAKER AMP

MIX

HEADPHONE AMP

LINEIN A1

LINEIN A2

LINEIN B1

LINEIN B2

DIGITAL MICROPHONE

+

I2C

CONTROL

INPUT

ADC

MIX

ADC

�� Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

MAX98088

Stereo Audio Codec

with FlexSound Technology

Functional Diagram

F6

REFG6

REG

BIAS

MAX98088

G5

AVDD

G4

DVDD

SDIN2

DATA

INPUT

HIZOFF2SDIEN1 SDIEN2

SDOUT2

DATA

OUTPUT

PORT S2PORT S1

LRCLKS2 SDOUTS2 SDINS2 DVDDS2

LRCLKS1 SDOUTS1 SDINS1 DVDDS1 BCLKS2

D1 D4 D2 E4 E1 F2 F3 G1 G3 G2

BCLKS1

MCLK

MAS2

LRCLK2

FRAME

CLOCK

BIT

BCLK2

SDIN1

SDOUT1

LRCLK1

BCLK1

SEL1 SEL2

CLOCK

MAS2

DAI2

DATA

INPUT

HIZOFF1

DATA

OUTPUT

MAS1

FRAME

CLOCK

BIT

CLOCK

MAS1

DAI1

RECP/

RECVOLL:

LBEN1

MUX

A6

RXINP

LOUTL/

0dB

+8dB TO -62dB

MIX

+

LBEN2

RECN/

LOUTR/

RECBYP

RECLEN

RECVOLR:

+8dB TO -62dB

MIXRECL

TM

DV1G:

0/6/12/18dB

LTEN1

DVST:

0dB TO -60dB

CLOCK

RXINN B6

FlexSound

TECHNOLOGY

+

MIX

SIDETONE

CONTROL

RECREN

0dB

LINEMODE

MIX

MULTI BAND ALC

DSTS

SPKBYP

A3, B3

SPKLVDD

MIXRECR

DVEQ2:

DVEQ1:

A4, B4

SPKLP

SPVOLL:

+8dB TO -62dB

0dB TO -15dB

A5, B5

SPKLN

+6dB

MIX

5-BAND

PARAMETRIC

5-BAND

PARAMETRIC

NOISE GATE

GAIN

AUTOMATIC

SPLEN

EQ

CONTROL

C4, C5

SPKLGND

MIXSPL

EQ1ENEQ2EN

AUDIO/

MODE1

C9

C8

SPKRGND A2, B2

+8dB TO -62dB

MIXSPR

CONVERTER

MODE

MIXHPL_

AUDIO/

HPVOLL:

PATH SEL

VOICE

ADCR

HPL

+3dB TO -67dB

MIX

DACR

MIX

FILTERS

MODE1

DV1:

0dB TO -15dB

ADREN

MIX

DAREN

DVFLT

HPLEN

MIXHPL

MIXDAR

MIXADR

HPSNS

HPVOR:

+3dB TO -67dB

MIXHPR_

PATH SEL

MIX

SPKRP C1, C2

SPKRN A1, B1

SPKRVDD C3, D3

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

SRMIX_

12/18dB

AVL:0dB

TO -15dB

AVLG: 0/6/

ADCL

ADLEN

MIX

MIXADL

A9

HPR D9

PVDD A7

HPGND

B7B8A8

HPREN

HPVSS

PUMP

CHARGE

B9

HPVDD C1N C1P

MIXHPR

F1 G7 C6, C7, D5, D6, D7, E3

DGND AGND N.C.

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

�� Maxim Integrated Products 5

MAX98088

Stereo Audio Codec

with FlexSound Technology

ABSOLUTE MAXIMUM RATINGS

(Voltages with respect to AGND.)

DVDD, AVDD, PVDD, 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,

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

SPK_P and SPK_N. Receiver load (R to HPGND. Line out loads (R = 2.2FF, C = 0dB, AV MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = 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

MICBIAS DACGAIN

= V

DVDD

= C

REG

= 0dB, AV

= V

DVDDS1

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

REC

) connected from LOUTL or LOUTR to SPKLGND. R

LOAD

= 1FF, C

C1N-C1P

ADCLVL

= 0dB, AV

DVDDS2

= 1FF, C

= +1.8V, V

HPVDD

ADCGAIN

MIN

SPKLVDD

= C

= 0dB, AV

to T

Full-duplex 8kHz mono, receiver output, MAS = 1

DAC playback 48kHz

I

VDD

stereo, headphone outputs, MAS = 1

DAC playback 48kHz stereo, speaker outputs, MAS = 1

TA = +25NC

VSEN = 0 VSEN = 1

REG, INA1/EXTMICP, INA2/EXTMICN, 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/LOUTL/RXINP, RECN/LOUTR/

RXINN .....................(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 (TA = +70NC)

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

= V

SPKRVDD

= 1FF. AV

HPVSS

PGAIN_

, unless otherwise noted. Typical values are at +25NC.) (Note 1)

MAX

V

SPKLVDD

DVDD

V

DVDDS1

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

SPKRVDD

, V

PVDD

DVDDS2

= +20dB, AV

= 0dB, AV

HP_

MICPRE_

= 0dB, AV

, V

AVDD

, V

) connected between

SPK

= J, Z

REC

MICPGA_

= 0dB, AV

REC

SPK

= 0dB, AV

2.8 5.5

1.65 1.8 2

1.65 3.6

= J, C

SPK_

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

REF

DACATTN

= 0dB,

VV

mA

FA

ms

�� Maxim Integrated Products 6

with FlexSound Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

SPK_P and SPK_N. Receiver load (R to HPGND. Line out loads (R = 2.2FF, C = 0dB, AV MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

MICROPHONE TO ADC PATH

Dynamic Range DR

Total Harmonic Distortion + Noise

Common-Mode Rejection Ratio

Power-Supply Rejection Ratio PSRR

Path Phase Delay

MICROPHONE PREAMP

Full-Scale Input AV

Preamplifier Gain AV

PGA Gain AV

MIC Input Resistance R

= V

PVDD

MICBIAS DACGAIN

= V

DVDD

= C

REG

= 0dB, AV

= V

DVDDS1

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

REC

) connected from LOUTL or LOUTR to SPKLGND. R

LOAD

= 1FF, C

C1N-C1P

ADCLVL

= 0dB, AV

DVDDS2

= 1FF, C

= +1.8V, V

HPVDD

ADCGAIN

MIN

SPKLVDD

= C

HPVSS

= 0dB, AV

to T

MAX

fS = 8kHz, MODE = 0 (IIR voice), AV (Note 4)

VIN = 0.1V

THD+N

MICPRE_

AV

MICPRE_

CMRR VIN = 100mV

V

AVDD

, fS = 8kHz, f = 1kHz -78

P-P

= 0dB, VIN = 1V

= +30dB, VIN = 32mV

, f = 217Hz 74 dB

P-P

= 1.65V to 1.95V, input referred,

MIC inputs floating

= 200mV

RIPPLE

f = 1kHz, V f = 10kHz, V

RIPPLE

= 200mV

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

= 0dB 1.05 V

MICPRE_

MICPGA_

IN_MIC

MICPRE_

(Note 5)

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

MAX98088

Stereo Audio Codec

= V

SPKRVDD

= 1FF. AV

PGAIN_

, unless otherwise noted. Typical values are at +25NC.) (Note 1)

P-P

MODE = 0 (IIR voice) 8kHz

MODE = 0 (IIR voice) 16kHz

MODE = 1 (FIR audio) 8kHz

MODE = 1 (FIR audio) 48kHz

PA1EN/PA2EN = 01 0

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

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= 0dB, AV

MICPRE_

= +20dB, AV

= 0dB, AV

HP_

= 0dB

SPK

REC

MICPGA_

= 0dB, AV

REC

88 dB

, f = 1kHz -85

, f = 1kHz -71

P-P

50 62

, input referred 62

, input referred 53

2.2

1.1

4.5

0.76

50

) connected between

= J, Z

= 0dB, AV

SPK

= J, C

DACATTN

SPK_

REF

= 0dB,

dBAV

dBf = 217Hz, V

ms

P-P

dBPA1EN/PA2EN = 10 19.5 20 20.5

dB

kI

�� Maxim Integrated Products 7

MAX98088

Stereo Audio Codec

with FlexSound Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

SPK_P and SPK_N. Receiver load (R to HPGND. Line out loads (R = 2.2FF, C = 0dB, AV MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

MICROPHONE BIAS

MICBIAS Output Voltage V Load Regulation I Line Regulation V

Ripple Rejection

Noise Voltage

MICROPHONE BYPASS SWITCH

On-Resistance R

Total Harmonic Distortion + Noise

Off-Isolation

Off-Leakage Current

LINE INPUT TO ADC PATH

Dynamic Range (Note 4) DR

Total Harmonic Distortion + Noise

Gain Error DC accuracy 1 %

Power-Supply Rejection Ratio PSRR

= V

PVDD

MICBIAS DACGAIN

= V

DVDD

= C

REG

= 0dB, AV

= V

DVDDS1

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

REC

) connected from LOUTL or LOUTR to SPKLGND. R

LOAD

= 1FF, C

C1N-C1P

= 0dB, AV

ADCLVL

MICBIASILOAD

DVDDS2

= 1FF, C

LOAD

SPKLVDD

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

= +1.8V, V

HPVDD

ADCGAIN

MIN

SPKLVDD

= C

= 0dB, AV

to T

= V

HPVSS

, unless otherwise noted. Typical values are at +25NC.) (Note 1)

MAX

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

= 2.8V to 5.5V 110

RIPPLE (SPKLVDD)

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

I

= 100mA, INABYP = MIC2BYP = 1,

ON

THD+N

MIC1_

V

MIC2_

VIN = 2V

= V

= 0V, AVDD, TA = +25NC

INA_

, VCM = 0.9V, RL = 10kI,

P-P

f = 1kHz, INABYP = MIC2BYP = 1

VIN = 2V

V

MIC1_

, VCM = 0.9V, RL = 10kI, f = 1kHz

P-P

= [0V, AVDD], V

MIC2_/VINA_

[AVDD, 0V]

INA pin direct, fS = 48kHz, MODE = 1 (FIR audio)

THD+N VIN = 1V

V

AVDD

, f = 1kHz -82 -74 dB

P-P

= 1.65V to 1.95V, input referred,

line inputs floating, TA = +25NC

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

= 200mV

SPKRVDD

= 1FF. AV

= 0dB, AV

PGAIN_

= 100mV

,

P-P

,

P-P

,

P-P

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

HP_

P-P

= +20dB, AV

= 0dB, AV

-1 +1

MICPRE_

=

57 68

) connected between

SPK

= J, Z

REC

MICPGA_

REC

= 0dB, AV

92 83

5 30

-80 dB

60 dB

93 dB

63

57

SPK

= J, C

DACATTN

SPK_

= 0dB,

FV

nV/√Hz

FV

dB

RMS

I

FA

dB

REF

�� Maxim Integrated Products 8

MAX98088

Stereo Audio Codec

with FlexSound Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

SPK_P and SPK_N. Receiver load (R to HPGND. Line out loads (R = 2.2FF, C = 0dB, AV MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = 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

MICBIAS DACGAIN

= V

DVDD

= C

REG

= 0dB, AV

= V

DVDDS1

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

REC

) connected from LOUTL or LOUTR to SPKLGND. R

LOAD

= 1FF, C

C1N-C1P

ADCLVL

PGAIN_

IN_FB

ADCLVL

ADCGAIN

PLP

SLP

= 0dB, AV

IN

DVDDS2

= 1FF, C

AV AV

= +1.8V, V

ADCGAIN

PGAIN_

SPKLVDD

= C

HPVDD

= 0dB, AV

to T

MIN

= 0dB 1 = -6dB 1.4

= V

HPVSS

, unless otherwise noted. Typical values are at +25NC.) (Note 1)

MAX

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

AVL/AVR = 0xF to 0x0 (Note 5) -12 +3 dB

AVLG/AVRG = 00 to 11 (Note 5) 0 18 dB

Ripple limit cutoff 0.441 x fs

-3dB cutoff 0.449 x fs

PLP

0.47 x f

f > f

SLP

SPKRVDD

= 1FF. AV

= 0dB, AV

PGAIN_

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= +20dB, AV

= 0dB, AV

HP_

) connected between

SPK

= J, Z

REC

MICPGA_

REC

= 0dB, AV

SPK

PGAINA/PGAINB = 0x0 19 20 21 PGAINA/PGAINB = 0x1 13 14 15 PGAINA/PGAINB = 0x2 2 3 4 PGAINA/PGAINB = 0x3 0 PGAINA/PGAINB = 0x4 -4 -3 -2

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

TA = +25NC TA = T

MIN

to T

MAX

-7 -6 -5

18 20 22 16 24

-0.1 +0.1 dB

74 dB

= J, C

DACATTN

SPK_

S

= 0dB,

V

P-P

dB

kI

Hz

REF

�� Maxim Integrated Products 9

Stereo Audio Codec

with FlexSound Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

SPK_P and SPK_N. Receiver load (R to HPGND. Line out loads (R = 2.2FF, C = 0dB, AV MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

VOICE MODE IIR HIGHPASS FILTER (MODE1 = 0)

Passband Cutoff (-3dB from Peak)

Stopband Cutoff (-30dB from Peak)

DC Attenuation DC

STEREO AUDIO MODE FIR LOWPASS FILTER (MODE1 = 1, DHF1 = 0, LRCLK < 50kHz)

Passband Cutoff f

Passband Ripple f < f

Stopband Cutoff f

Stopband Attenuation (Note 6)

ADC STEREO AUDIO MODE FIR LOWPASS FILTER (MODE1 = 1, DHF1 = 1, LRCLK > 50kHz)

Passband Cutoff f

Passband Ripple f < f Stopband Cutoff f Stopband Attenuation f < f

= V

PVDD

MICBIAS DACGAIN

= V

DVDD

= C

REG

= 0dB, AV

= V

DVDDS1

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

REC

) connected from LOUTL or LOUTR to SPKLGND. R

LOAD

= 1FF, C

C1N-C1P

ADCLVL

= 0dB, AV

DVDDS2

= 1FF, C

= +1.8V, V

HPVDD

ADCGAIN

MIN

SPKLVDD

= C

HPVSS

= 0dB, AV

to T

, unless otherwise noted. Typical values are at +25NC.) (Note 1)

MAX

= V

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

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

f

AHPPB

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

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

AVFLT = 0x5 (fS/240 Butterworth)

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

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

f

AHPSB

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

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

AVFLT = 0x5 (fS/240 Butterworth)

ATTEN

AVFLT ≠ 000

Ripple limit cutoff 0.43 x f

PLP

-6.02dB cutoff 0.5 x f

PLP

SLP

f < f

SLP

PLP

SLP

Ripple limit cutoff 0.208 x f

-3dB cutoff 0.28 x f

PLP

SLP

SPKRVDD

= 1FF. AV

= 0dB, AV

PGAIN_

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= +20dB, AV

= 0dB, AV

HP_

MAX98088

) connected between

SPK

= J, Z

REC

MICPGA_

REC

= 0dB, AV

0.0139 x f

S

0.0156 x f

S

0.0279 x f

S

0.0312 x f

S

0.0018 x f

S

90 dB

S

-0.1 +0.1 dB

60 dB

S

-0.1 +0.1 dB

0.417 x fSHz

60 dB

= J, C

SPK

DACATTN

SPK_

0.0161 x f

S

0.0319 x f

S

0.0321 x f

S

0.0632 x f

S

0.0043 x f

S

0.58 x fSHz

REF

= 0dB,

Hz

Hz-3dB cutoff 0.48 x f

Hz

�� Maxim Integrated Products 10

MAX98088

Stereo Audio Codec

with FlexSound Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

SPK_P and SPK_N. Receiver load (R to HPGND. Line out loads (R = 2.2FF, C = 0dB, AV MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = 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 AV

Sidetone Gain Adjust Step Size

Sidetone Path Phase Delay

ADC-TO-DAC DIGITAL LOOP-THROUGH PATH

Dynamic Range (Note 4) DR

Total Harmonic Distortion + Noise

DAC LEVEL CONTROL

DAC Attenuation Range AV

DAC Attenuation Step Size 1 dB

DAC Gain Adjust Range AV

DAC Gain Adjust Step Size 6 dB

= V

PVDD

MICBIAS DACGAIN

= V

DVDD

= C

REG

= 0dB, AV

= V

DVDDS1

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

REC

) connected from LOUTL or LOUTR to SPKLGND. R

LOAD

= 1FF, C

C1N-C1P

ADCLVL

f

AHPPB

= 0dB, AV

Atten

= +1.8V, V

DVDDS2

= 1FF, C

AVFLT ≠ 000

HPVDD

ADCGAIN

MIN

SPKLVDD

= C

HPVSS

= 0dB, AV

to T

, unless otherwise noted. Typical values are at +25NC.) (Note 1)

MAX

= V

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

STGA

DVST = 0x01 -0.5 DVST = 0x1F -60.5

1kHz, 0dB input, highpass filter disabled

fS = 48kHz, MCLK = 12.288MHz, MODE = 1 (FIR audio), MIC to HP output, TA = +25NC

THD+N

DACATTN

DACGAIN

f = 1kHz, fS = 48kHz, MCLK = 12.288MHz, MODE = 1 (FIR audio), MIC to HP output

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

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

SPKRVDD

= 1FF. AV

= 0dB, AV

PGAIN_

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= +20dB, AV

= 0dB, AV

HP_

SPK

REC

MICPGA_

= 0dB, AV

REC

90 dB

8kHz 2.2 16kHz 1.1

83 93 dB

81 dB

) connected between

= J, Z

= 0dB, AV

SPK

= J, C

DACATTN

SPK_

= 0dB,

0.000125 x f

S

2 dB

Hz

ms

s

dB

ms

REF

�� Maxim Integrated Products 11

Stereo Audio Codec

with FlexSound Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

SPK_P and SPK_N. Receiver load (R to HPGND. Line out loads (R = 2.2FF, C = 0dB, AV MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DAC DIGITAL FILTERS VOICE MODE IIR LOWPASS FILTER (MODE1 = 0)

Passband Cutoff f

Passband Ripple f < f Stopband Cutoff f Stopband Attenuation (Note 6) f > f

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) f > f

= V

PVDD

MICBIAS DACGAIN

= V

DVDD

= C

REG

= 0dB, AV

= V

DVDDS1

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

REC

) connected from LOUTL or LOUTR to SPKLGND. R

LOAD

= 1FF, C

C1N-C1P

ADCLVL

PLP

SLP

= 0dB, AV

DVDDS2

= 1FF, C

= +1.8V, V

HPVDD

ADCGAIN

MIN

SPKLVDD

= C

= 0dB, AV

to T

= V

HPVSS

, unless otherwise noted. Typical values are at +25NC.) (Note 1)

MAX

Ripple limit cutoff 0.448 x f

-3dB cutoff 0.451 x f

PLP

SLP

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

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

f

DHPPB

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

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

DVFLT = 0x5 (fs/240 Butterworth)

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

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

f

DHPSB

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

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

DVFLT = 0x5 (fS/240 Butterworth) 0.0021 x f

ATTEN

DVFLT ≠ 000

Ripple limit cutoff 0.43 x f

PLP

-3dB cutoff 0.47 x f

-6.02dB cutoff 0.5 x f

PLP

SLP

SPKRVDD

= 1FF. AV

= 0dB, AV

PGAIN_

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= +20dB, AV

= 0dB, AV

HP_

MAX98088

) connected between

SPK

= J, Z

REC

MICPGA_

REC

= 0dB, AV

S

-0.1 +0.1 dB

0.476 x f

75 dB

0.0139 x f

0.0156 x f

0.0279 x f

0.0312 x f

S

85 dB

S

-0.1 +0.1 dB

60 dB

= J, C

SPK

DACATTN

SPK_

S

0.0161 x f

S

0.0312 x f

S

0.0321 x f

S

0.0625 x f

S

0.0042 x f

S

0.58 x fSHz

REF

= 0dB,

Hz

�� Maxim Integrated Products 12

MAX98088

Stereo Audio Codec

with FlexSound Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

SPK_P and SPK_N. Receiver load (R to HPGND. Line out loads (R = 2.2FF, C = 0dB, AV MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = 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 fS = 48kHz, f = 1kHz (Note 4) 96 dB

Total Harmonic Distortion + Noise

Power-Supply Rejection Ratio PSRR

Click-and-Pop Level K

= V

PVDD

MICBIAS DACGAIN

= V

DVDD

= C

REG

= 0dB, AV

= V

DVDDS1

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

REC

) connected from LOUTL or LOUTR to SPKLGND. R

LOAD

= 1FF, C

C1N-C1P

ADCLVL

PLP

SLP

f

DHPPB

ATTEN

= 0dB, AV

DVDDS2

= 1FF, C

= +1.8V, V

HPVDD

ADCGAIN

MIN

SPKLVDD

= C

= 0dB, AV

to T

= V

HPVSS

, unless otherwise noted. Typical values are at +25NC.) (Note 1)

MAX

Ripple limit cutoff 0.24 x f

-3dB cutoff 0.31 x f

PLP

f < f

SLP

DVFLT ≠ 000 (DAI1), DCB2 = 1 (DAI2)

ALCMB = 1 5 kHz

ALCRLS = 101 0.25

ALCRLS = 000 8

THD+N

f = 1kHz, P

V

SPKLVDD

= 2.8V to 5.5V, TA = +25NC

f = 217Hz, V

f = 1kHz, V

f = 10kHz, V

= 15mW, R

OUT

RIPPLE

= 200mV

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

CP

REC

0dB

SPKRVDD

= 1FF. AV

PGAIN_

REC

P-P

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV

HP_

= 32I

= 0dB, AV

Into shutdown -68

=

Out of shutdown -72

) connected between

SPK

REC

MICPGA_

= 0dB, AV

REC

S

= J, Z

= 0dB, AV

SPK

= J, C

DACATTN

SPK_

= 0dB,

Hz

-0.1 +0.1 dB

0.477 x fSHz

60 dB

0.000104 x f

S

Hz

90 dB

-70 -63 dB

64 75

-59

dB

-59

dBV

s

REF

�� Maxim Integrated Products 13

MAX98088

Stereo Audio Codec

with FlexSound Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

SPK_P and SPK_N. Receiver load (R to HPGND. Line out loads (R = 2.2FF, C = 0dB, AV MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

LINE INPUT TO RECEIVER AMPLIFIER PATH

Dynamic Range (Note 4) DR Referenced to full-scale output level 94 dB Total Harmonic Distortion +

Noise

Click-and-Pop Level K

RECEIVER AMPLIFIER

Output Power P Full-Scale Output (Note 7) 1 V

Volume Control (Note 5) AV

Volume Control Step Size

Mute Attenuation f = 1kHz 88 dB

Capacitive Drive Capability No sustained oscillations

DAC TO LINE OUT AMPLIFIER PATH

Dynamic Range (Note 4) DR fS = 48kHz, f = 1kHz 83 96 dB

Total Harmonic Distortion + Noise

LINE INPUT TO LINE OUT AMPLIFIER PATH

Dynamic Range (Note 4) DR Referenced to full-scale output level 92 dB

Total Harmonic Distortion + Noise

Full-Scale Output (Note 7) 2 V Mute Attenuation f = 1kHz 85 dB Output Offset Voltage V Capacitive Drive Capability

= V

PVDD

MICBIAS DACGAIN

= V

DVDD

= C

REG

= 0dB, AV

= V

DVDDS1

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

REC

) connected from LOUTL or LOUTR to SPKLGND. R

LOAD

= 1FF, C

C1N-C1P

ADCLVL

= 0dB, AV

DVDDS2

= 1FF, C

= +1.8V, V

HPVDD

ADCGAIN

MIN

SPKLVDD

= C

HPVSS

= 0dB, AV

to T

, unless otherwise noted. Typical values are at +25NC.) (Note 1)

MAX

= V

SPKRVDD

= 1FF. AV

PGAIN_

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV

= 0dB, AV

HP_

) connected between

SPK

= J, Z

REC

MICPGA_

REC

= 0dB, AV

THD+N -64 dB

CP

OUT

REC

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

REC

0dB

R

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

REC

RECVOL = 0x00 -62 RECVOL = 0x1F 8

Into shutdown -51

=

Out of shutdown -49

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 Q4

500 pF

THD+N

OS

R

REC

R

REC

f = 1kHz, RL = 1kI

f = 1kHz, RL = 10kI

AV

= -62dB

REC_

No sustained oscillations, RL = 1kI

= 32I = J

SPK

= J, C

DACATTN

SPK_

= 0dB,

dBV

RMS

dB

pF

P-P

mV

REF

�� Maxim Integrated Products 14

MAX98088

Stereo Audio Codec

with FlexSound Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

SPK_P and SPK_N. Receiver load (R to HPGND. Line out loads (R = 2.2FF, C = 0dB, AV MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = 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

MICBIAS DACGAIN

= V

DVDD

= C

REG

= 0dB, AV

= V

DVDDS1

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

REC

) connected from LOUTL or LOUTR to SPKLGND. R

LOAD

= 1FF, C

C1N-C1P

ADCLVL

= 0dB, AV

THD+N

DVDDS2

= 1FF, C

f = 1kHz, P

= +1.8V, V

HPVDD

ADCGAIN

MIN

OUT

SPKLVDD

= C

= V

HPVSS

= 0dB, AV

to T

, unless otherwise noted. Typical values are at +25NC.) (Note 1)

MAX

= 200mW, Z

SPKL to SPKR and SPKR to SPKL, P

= 640mW, f = 1kHz

OUT

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

CP

AV

= 0dB

SPK_

THD+N

f = 1kHz, P

= 200mW, RL = 8I + 68FH

OUT

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

CP

SPK_

= 0dB

V

SPKLVDD

V

SPKLVDD

V

SPKLVDD

V

SPKLVDD

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

OUT

SPK_

f = 1kHz, THD = 1%, Z

= 8I +

SPK

68FH

(Note 5)

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

-14dB to -38dB 3

-38dB to -64dB 4

AV

OS

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

SPK_

SPKRVDD

= 1FF. AV

PGAIN_

SPK

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV

= 0dB, AV

HP_

= 8I + 68FH

Into shutdown 65

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

) connected between

SPK

= J, Z

REC

MICPGA_

REC

= 0dB, AV

-68 dB

-88 dB

71 dB

SPK

= J, C

DACATTN

SPK_

= 0dB,

FV

dBV

RMS

mW

RMS

dB

mV

REF

�� Maxim Integrated Products 15

MAX98088

Stereo Audio Codec

with FlexSound Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

SPK_P and SPK_N. Receiver load (R to HPGND. Line out loads (R = 2.2FF, C = 0dB, AV MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

EXCURSION LIMITER

Upper Corner Frequency Range

Lower Corner Frequency DHPLCF = 01 to 10 400 Hz

Biquad Minimum Corner Frequency

Threshold Voltage

Release Time

POWER LIMITER

Attenuation -64 dB

Threshold

Time Constant 1 t

Time Constant 2 t

Weighting Factor k

DISTORTION LIMITER

Distortion Limit

Release Time Constant

= V

PVDD

MICBIAS DACGAIN

= V

DVDD

= C

REG

= 0dB, AV

= V

DVDDS1

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

REC

) connected from LOUTL or LOUTR to SPKLGND. R

LOAD

= 1FF, C

C1N-C1P

ADCLVL

= 0dB, AV

DVDDS2

= 1FF, C

= +1.8V, V

HPVDD

ADCGAIN

MIN

SPKLVDD

= C

HPVSS

= 0dB, AV

to T

, unless otherwise noted. Typical values are at +25NC.) (Note 1)

MAX

= V

DHPUCF = 001 to 100 400 1000 Hz

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

Z

= 8I + 68FH,

SPK

V

SPKLVDD

5.5V, AV

= V

SPK_

SPKRVDD

= 8dB

=

ALCRLS = 101 0.25 ALCRLS = 000 4

Z

= 8I + 68FH,

SPK

PWR1

PWR2

PWR

V

SPKLVDD

5.5V, AV

PWRT1 = 0x1 0.5 PWRT1 = 0xF 8.7 PWRT2 = 0x1 to 0xF 0.5 PWRT2 = 0xF 8.7 PWRK = 000 to 111 12.5 100 %

= V

SPK_

SPKRVDD

= 8dB

=

THDCLP = 0x1 < 1

THDCLP = 0xF 24

THDT1 = 000 0.76

THDT1 = 111 6.2

SPKRVDD

= 1FF. AV

PGAIN_

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV

= 0dB, AV

HP_

DHPTH = 000 0.34

DHPTH = 111 0.95

PWRTH = 0x1 0.08

PWRTH = 0xF 1.23

) connected between

SPK

= J, Z

REC

MICPGA_

REC

= 0dB, AV

SPK

= J, C

DACATTN

SPK_

= 0dB,

Hz

V

s

W

s

min

%

s

REF

P

�� Maxim Integrated Products 16

MAX98088

Stereo Audio Codec

with FlexSound Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

SPK_P and SPK_N. Receiver load (R to HPGND. Line out loads (R = 2.2FF, C = 0dB, AV MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DAC TO HEADPHONE AMPLIFIER PATH

Dynamic Range (Note 4) DR fS = 48kHz

Total Harmonic Distortion + Noise

Crosstalk

Power-Supply Rejection Ratio PSRR

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

MICBIAS DACGAIN

= V

DVDD

= C

REG

= 0dB, AV

= V

DVDDS1

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

REC

) connected from LOUTL or LOUTR to SPKLGND. R

LOAD

= 1FF, C

C1N-C1P

ADCLVL

= 0dB, AV

THD+N f = 1kHz, P

DVDDS2

= 1FF, C

= +1.8V, V

HPVDD

ADCGAIN

MIN

OUT

SPKLVDD

= C

HPVSS

= 0dB, AV

to T

, unless otherwise noted. Typical values are at +25NC.) (Note 1)

MAX

= 20mW

= V

HPL to HPR and HPR to HPL, P f = 1kHz, RHP = 32I

V

= V

AVDD

f = 217Hz, V AV

= 0dB

HP_

f = 1kHz, V AV

= 0dB

HP_

f = 10kHz, V AV

= 0dB

HP_

= 1.65V to 2.0V 46 54

PVDD

= 200mV

RIPPLE

= 200mV

RIPPLE

= 200mV

RIPPLE

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

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

CP

AV

= 0dB

HP_

THD+N

VIN = 1V

, f =1kHz, RHP = 32I

P-P

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

CP

AV

= 0dB

HP_

SPKRVDD

= 1FF. AV

PGAIN_

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV

= 0dB, AV

HP_

MICPGA_

REC

Master or slave mode 101 Slave mode 97

Low power mode, TA = +25NC

95 97

RHP = 16I RHP = 32I

= 5mW,

OUT

,

P-P

,

P-P

,

P-P

MODE = 0 (voice) 8kHz

MODE = 0 (voice) 16kHz

MODE = 1 (music) 8kHz

MODE = 1 (music) 48kHz

Into shutdown -62

Out of shutdown -63

Into shutdown -62

Out of shutdown -63

) connected between

SPK

= J, Z

REC

= 0dB, AV

SPK

= J, C

DACATTN

SPK_

-85 -64

-92

79.5 dB

72

63

43

2.2

1.1

4.5

0.76

81 dB

= 0dB,

dBV

dB

ms

REF

�� Maxim Integrated Products 17

MAX98088

Stereo Audio Codec

with FlexSound Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

SPK_P and SPK_N. Receiver load (R to HPGND. Line out loads (R = 2.2FF, C = 0dB, AV MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

HEADPHONE AMPLIFIER

Output Power P

Positive Charge-Pump Output Voltage

Negative Charge-Pump Output Voltage

Output Voltage Threshold (Output Voltage at which the Charge Pump Switches Modes; VOUT Rising; Transition from Split to Invert Mode)

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

MICBIAS DACGAIN

= V

DVDD

= C

REG

= 0dB, AV

= V

DVDDS1

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

REC

) connected from LOUTL or LOUTR to SPKLGND. R

LOAD

= 1FF, C

C1N-C1P

ADCLVL

OUT

= 0dB, AV

HPVDD

HPVSS

V

TH

HP_

= +1.8V, V

DVDDS2

= 1FF, C

HPVDD

ADCGAIN

MIN

f = 1kHz, THD = 1%

V

≤ V V V V

OUT

> V

≤ V

> V

PVDD

RL = J

(Note 5)

SPKLVDD

= C

= V

HPVSS

= 0dB, AV

to T

, unless otherwise noted. Typical values are at +25NC.) (Note 1)

MAX

x 0.25V, RHP = J

+3dB to +1dB 0.5 +1dB to -5dB 1

-5dB to -19dB 2

-19dB to -43dB 3

-43dB to -67dB 4

AV

OS

ON

THD+N

= -67dB

HP_

I

= 100mA, SPKBYP = 1,

SPKL_

V

= [0V, V

RXIN_

VIN = 2V Z

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

SPK

, VCM = V

P-P

SPKLVDD

]

SPKLVDD

SPKBYP = 1

VIN = 2V Z

SPK

V

RXIN_

V

SPKL_

, VCM = V

P-P

SPKLVDD

= 8I + 68FH, f = 1kHz

= [0V, V

= [V

SPKLVDD

],

, 0V]

SPKRVDD

= 1FF. AV

PGAIN_

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= 0dB, AV

= +20dB, AV

= 0dB, AV

HP_

REC

MICPGA_

REC

RHP = 32I RHP = 16I

PVDD/2

-PVDD/2

QPVDD

HPVOL_ = 0x00 -67 HPVOL_ = 0x1F +3

TA = +25NC Q0.5 Q1 TA = T

MIN

to T

MAX

RHP = 32I RHP = J

/2,

RS = 10I

RS = 0I

/2,

-20 +20

) connected between

SPK

= J, Z

SPK

= J, C

= 0dB, AV

SPK_

30 38

PVDD

-PVDD

x 0.25

Q3 500 100

2.8

60

96 dB

DACATTN

= 0dB,

mW

V

RMS

dB

mV

pF

I

dB

FA

REF

�� Maxim Integrated Products 18

MAX98088

Stereo Audio Codec

with FlexSound Technology

ELECTRICAL CHARACTERISTICS (continued)

(V

= V

AVDD

SPK_P and SPK_N. Receiver load (R to HPGND. Line out loads (R = 2.2FF, C = 0dB, AV MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = 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

JACKSNS Sense Voltage JACKSNS Sense Current V

BATTERY ADC

Input Voltage Range 2.6 5.6 V LSB Size 0.1 V

= V

PVDD

MICBIAS DACGAIN

= V

DVDD

= C

REG

= 0dB, AV

= V

DVDDS1

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

REC

) connected from LOUTL or LOUTR to SPKLGND. R

LOAD

= 1FF, C

C1N-C1P

ADCLVL

ON

= 0dB, AV

THD+N

DVDDS2

= 1FF, C

I

RECP

V

SPKLVDD

VIN = 2V

= +1.8V, V

ADCGAIN

HPVDD

MIN

SPKLVDD

= C

= 0dB, AV

to T

= 100mA, RECBYP = 1, V

]

, VCM = V

P-P

= V

HPVSS

, unless otherwise noted. Typical values are at +25NC.) (Note 1)

MAX

SPKLVDD

68FH, f = 1kHz, RECBYP = 1, RS = 0I

VIN = 2V

, VCM = V

P-P

SPKLVDD

68FH, f = 1kHz

V

RECP

[V

SPKLVDD

= [0V, V

, 0V]

SPKLVDD

], V

SHDN = 1, JACKSNS rising

SHDN = 0, JKSNS SHDN = 0

JACKSNS

= 0V 4 10

SPKRVDD

= 1FF. AV

= 0dB, AV

PGAIN_

RECN

/2, Z

=

RECN

= 3.7V. Speaker loads (Z

= RHP = J, R

LOAD

MICPRE_

= +20dB, AV

= 0dB, AV

HP_

= [0V,

= 8I +

SPK

= 8I +

SPK

-15 +15

0.92 x

V

MICBIAS

) connected between

SPK

REC

MICPGA_

= 0dB, AV

REC

= J, Z

= 0dB, AV

SPK

= J, C

SPK_

2

60 dB

84 dB

0.95 x

V

MICBIAS

0.98 x

V

MICBIAS

SPKLVDD - 0.7

SPKLVDD V

DACATTN

= 0dB,

FA

I

V

REF

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 IIH, I Input Capacitance 10 pF

SDINS1, BCLKS1, LRCLKS1—INPUT

Input High Voltage V

Input Low Voltage V

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

PVDD

= V

DVDD

= V

DVDDS1

= V

IH

IL

IH

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

-1 +1

0.7 x

DVDDS1

0.29 x

DVDDS1

-1 +1

�� Maxim Integrated Products 19

0.6 V FA

V

FA

MAX98088

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

Input Leakage Current IIH, I

SDINS2, BCLKS2, LRCLKS2—INPUT

Input High Voltage V

Input Low Voltage V

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

BCLKS2, LRCLKS2, SDOUTS2—OUTPUT

Output Low Voltage V

Output High Voltage V

Input Leakage Current IIH, I

SDA, SCL—INPUT

Input High Voltage V

Input Low Voltage V

Input Hysteresis 210 mV Input Leakage Current IIH, 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 IIH, I Input Capacitance 10 pF

PVDD

= V

DVDD

= V

DVDDS1

OL

OH

IH

IL

OL

OH

IH

IL

OH

OL

IH

IL

= V

IL

= +1.8V, V

DVDDS2

V

DVDDS1

V

DVDDS1

V

DVDD

high-impedance state

V

DVDDS2

V

DVDDS2

V

DVDDS2

V

DVDD

high-impedance state

V

DVDD

V

= 5.5V, TA = +25°C

OUT

V

DVDD

V

DVDD

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

-1 +1

1 mA

= 1.65V, IOL = 3mA

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

�� Maxim Integrated Products 20

MAX98088

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

PVDD

= V

PVDD

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 %

100 ns

V

%

RMS

kHz

%

ms

�� Maxim Integrated Products 21

with FlexSound Technology

AUDIO INTERFACE TIMING CHARACTERISTICS

(V

= V

AVDD

(Note 1)

BCLK Cycle Time t BCLK High Time t BCLK Low Time t BCLK or LRCLK Rise and Fall Time tR, t SDIN to BCLK Setup Time t LRCLK to BCLK Setup Time t SDIN to BCLK Hold Time t LRCLK to BCLK Hold Time t

Minimum Delay Time from LSB BCLK Falling Edge to High-Impedance State

LRCLK Rising Edge to SDOUT MSB Delay

BCLK to SDOUT Delay t

Delay Time from BCLK to LRCLK t

Delay Time from LRCLK to BCLK After LSB

PVDD

= V

DVDD

= V

DVDDS1

= V

DVDDS2

= +1.8V, V

SPKLVDD

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

BCLK

BCLKH

BCLKL

SETUP

SYNCSET

HOLD

SYNCHOLD

t

HIZOUT

t

SYNCTXCL

CLKTX

CLKSYNC

t

ENDSYNC

Slave mode 90 ns Slave mode 20 ns Slave mode 20 ns Master mode, CL = 15pF 5 ns

F

Slave mode 20 ns

Master mode, TDM_ = 1 42 ns

= 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

= V

MAX98088

Stereo Audio Codec

SPKRVDD

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

20 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)

�� Maxim Integrated Products 22

BCLK

(INPUT)

LRCLK

(INPUT)

SDOUT

(OUTPUT)

SDIN

(INPUT)

t

SYNCSET

t

HIZOUT

LSB HI-Z

LSB

SLAVE MODE

t

BCLKH

t

CLKTX

t

BCLK

t

SETUPtHOLD

MSB

t

MSB

BCLKL

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

F

BCLK (OUTPUT)

t

ENDSYNC

LRCLK (OUTPUT)

t

SYNCTX

HI-ZLSB MSB

SDOUT (OUTPUT)

SDIN (INPUT)

t

HIZOUT

LSB MSB

t

R

t

CLKSYNC

MSB

t

R

t

CLKSYNC

t

CLKTX

t

SETUP

t

SETUP

t

HOLD

t

HOLD

SDOUT (OUTPUT)

BCLK (INPUT)

LRCLK (INPUT)

SDIN (INPUT)

BCLK (INPUT)

LRCLK (INPUT)

SDIN (INPUT)

MAX98088

Stereo Audio Codec

t

BCLK

t

SYNCSET

t

HIZOUT

t

HIZOUT

LSB

t

CLKTX

HI-ZLSB

t

SYNCTX

HI-ZLSB

t

BCLKH

t

SYNCHOLD

t

BCLKH

MSB

t

CLKTX

MSB

t

BCLK

t

SETUP

t

SETUP

t

BCLKL

t

HOLD

t

BCLKL

t

HOLD

MASTER MODE

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

PVDD

= 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

�� Maxim Integrated Products 23

SPKRVDD

SLAVE MODE

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

MHz

Figure 4. Digital Microphone Timing Diagram

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

PVDD

= V

DVDD

= V

DVDDS1

= V

DVDDS2

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

SCL

t

BUF

t

HD,STA

LOW

HIGH

t

SU,STA

HD,DAT

SU,DAT

R

F

SU,STO

B

SP

MAX98088

Stereo Audio Codec

with FlexSound Technology

1/f

MICCLK

t

HD,MICtSU,MIC

t

HD,MICtSU,MIC

LEFT RIGHTLEFTRIGHT

= +1.8V, V

SPKLVDD

Guaranteed by SCL pulse-width low and high

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

(Note 10)

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

Guaranteed by SDA transmitting fall time 400 pF

= V

SPKRVDD

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

0 400 kHz

1.3

0.6

1.3

0.6

0 900 ns

100 ns

20 +

0.1C

20 +

0.1C

20 +

0.05C

B

300 ns

250 ns

0.6

0 50 ns

Fs

Fs Fs

Fs

�� Maxim Integrated Products 24

with FlexSound Technology

I2C TIMING CHARACTERISTICS (continued)

(V

AVDD

(Note 1)

= V

SDA

PVDD

= V

DVDD

= V

t

LOW

DVDDS1

t

SU,DAT

= V

DVDDS2

t

HD,DAT

= +1.8V, V

SPKLVDD

t

SU,STA

= V

MAX98088

Stereo Audio Codec

SPKRVDD

t

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

t

HD,STA

t

SP

t

SU,STO

BUF

SCL

t

HD,STA

START CONDITION

t

HIGH

t

R

F

REPEATED START CONDITION

STOP

CONDITION

START

CONDITION

Figure 5. I2C Interface Timing Diagram

Note 1: The IC is 100% production tested at TA = +25NC. Specifications over temperature limits are guaranteed by design. Note 2: Analog supply current = I

+ I

DVDDS1

+ I

DVDDS2

.

AVDD

+ I

. Speaker supply current = I

HPVDD

SPKLVDD

+ I

SPKRVDD

. Digital supply current = I

DVDD

Note 3: Clocking all zeros into the DAC. Note 4: Dynamic range measured using the EIAJ method. -60dBFS, 1kHz output signal, A-weighted and normalized to 0dBFS.

f = 20Hz to 20kHz.

Note 5: Gain measured relative to the 0dB setting. Note 6: The filter specification is accurate only for synchronous clocking modes, where NI is a multiple of 0x1000. Note 7: 0dBFS for DAC input. 1V

for INA/INB inputs.

P-P

Note 8: LRCLK may be any rate in the indicated range. Asynchronous or noninteger MCLK/LRCLK ratios may exhibit some full-

scale performance degradation compared to synchronous integer related MCLK/LRCLK ratios.

Note 9: In master-mode operation, the accuracy of the MCLK input proportionally determines the accuracy of the sample clock rate. Note 10: CB is in pF.

Power Consumption

(V

AVDD

= V

PVDD

= V

DVDD

= V

DVDDS1

= V

DVDDS2

= 1.8V, V

SPKLVDD

= V

SPKRVDD

= 3.7V)

MODE

PLAYBACK TO HEADPHONE ONLY

DAC Playback 48kHz Stereo HP

DAC ª HP Low power mode, 24-bit, music filters, 256Fs

DAC Playback 48kHz Stereo HP

DAC ª HP Low power mode, 24-bit, music filters, 256Fs, 0.1mW/channel, RHP = 32I

�� Maxim Integrated Products 25

I

AVDD

(mA)

I

PVDD

(mA)

I

SPKVDD

I

SPKLVDD

(mA)

+

I

DVDD

(mA)

I

DVDDS1

I

DVDDS2

(mA)

+

POWER

(mW)

DYNAMIC

RANGE (dB)

1.25 0.47 0.00 1.35 0.01 5.55 97

1.25 1.81 0.00 1.56 0.01 8.32 97

(V

= V

AVDD

DAC Playback 48kHz Stereo HP

DAC ª HP 24-bit, music filters, 256Fs

DAC Playback 48kHz Stereo HP

DAC ª HP 24-bit, music filters, 256Fs, 0.1mW/ channel, RHP = 32I

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

= V

MODE

DVDD

= V

DVDDS1

= V

MAX98088

Stereo Audio Codec

with FlexSound Technology

Power Consumption (continued)

= 1.8V, V

DVDDS2

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

I

PVDD

(mA)

SPKLVDD

= V

I

SPKVDD

I

SPKLVDD

(mA)

SPKRVDD

+

= 3.7V)

I

DVDD

(mA)

I

DVDDS1

I

DVDDS2

(mA)

+

POWER

(mW)

DYNAMIC

RANGE (dB)

�� Maxim Integrated Products 26

(V

= V

AVDD

DAC Playback 48kHz Mono SPK

DAC ª SPK 24-bit, music filters

Line Playback Mono SPK

INA ª SPKL Differential inputs

FULL DUPLEX

Full-Duplex 8kHz Mono RCV

MIC1 ª ADC DAC ª REC 16-bit, voice filters

Full-Duplex 8kHz Stereo HP

MIC1/2 ª ADC DAC ª HP 16-bit, mixer, voice filters

PVDD

= V

MODE

DVDD

= V

DVDDS1

MAX98088

Stereo Audio Codec

with FlexSound Technology

Power Consumption (continued)

= V

I

AVDD

(mA)

11.19 1.27 0.48 1.28 0.01 26.43

= 1.8V, V

DVDDS2

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

I

PVDD

(mA)

SPKLVDD

= V

I

SPKVDD

I

SPKLVDD

(mA)

SPKRVDD

+

= 3.7V)

I

DVDD

(mA)

I

DVDDS1

I

DVDDS2

(mA)

+

POWER

(mW)

DYNAMIC

RANGE (dB)

Record = 87

Playback = 94

Record = 87

Playback = 96

Full-Duplex 8kHz Stereo HP

MIC1/2 ª ADC DAC ª HP 16-bit, low power mode, voice filters

LINE RECORD

Line Stereo Record 48kHz

INA ª ADC 24-bit, low power, music filters

Line Stereo Record 48kHz

INA ª ADC Direct pin input, 24bit, low power, music filters

7.12 0.47 0.48 1.10 0.02 17.44

6.19 0.00 0.20 1.31 0.15 14.47 91

5.69 0.00 0.20 1.31 0.12 13.53 93

Record = 87

Playback = 94

�� Maxim Integrated Products 27

(V

FREQUENCY (Hz)

AVDD

= V

PVDD

= V

DVDD

= V

DVDDS1

SPK_P and SPK_N. Receiver load (R HPGND. RHP = J, R = +20dB, AV 0dB, AV

MICPGA_

= 0dB, AV

REC

= J, Z

REC

= 0dB, AV

SPK

DACATTN

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

SPK_

MAX98088

Stereo Audio Codec

with FlexSound Technology

Typical Operating Characteristics

= V

) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR to

REC

= J, C

REF

= 0dB, AV

DVDDS2

= 2.2FF, C

= +1.8V, V

MICBIAS

DACGAIN

SPKLVDD

= 0dB, AV

= C

= V

REG

= 1FF, C

ADCLVL

Microphone to ADC

SPKRVDD

C1N-C1P

= 0dB, AV

= 3.7V. Speaker loads (Z

= 1FF, C

ADCGAIN

= C

HPVDD

= 0dB, AV

) connected between

SPK

= 1FF. AV

HPVSS

= 0dB, AV

PGAIN_

MICPRE_

HP_

=

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

MAX98088 toc04

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

THD+N RATIO (dB)

-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

THD+N RATIO (dB)

-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

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

�� Maxim Integrated Products 28

(V

AVDD

= V

PVDD

= V

DVDD

= V

DVDDS1

SPK_P and SPK_N. Receiver load (R HPGND. RHP = J, R = +20dB, AV 0dB, AV

MICPGA_

= 0dB, AV

REC

= J, Z

REC

= 0dB, AV

SPK

DACATTN

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

SPK_

MAX98088

Stereo Audio Codec

with FlexSound Technology

Typical Operating Characteristics (continued)

= V

) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR to

REC

= J, C

REF

= 0dB, AV

DVDDS2

= 2.2FF, C

= +1.8V, V

MICBIAS

DACGAIN

SPKLVDD

= C

REG

= 0dB, AV

= V

SPKRVDD

= 1FF, C

ADCLVL

= 3.7V. Speaker loads (Z

C1N-C1P

= 0dB, AV

= 1FF, C

ADCGAIN

HPVDD

= C

= 0dB, AV

) connected between

SPK

= 1FF. AV

HPVSS

= 0dB, AV

PGAIN_

MICPRE_

HP_

=

GAIN vs. FREQUENCY (MIC TO ADC)

10

0

-10

-20

-30

-40

-50

MCLK = 13MHz

-60

NORMALIZED GAIN (dB)

LRCLK = 8kHz FREQ MODE

-70

V

= 1V

IN

AV

P-P

MICPRE_

-80

-90

= 0dB

FREQUENCY (Hz)

MODE = 1

MODE = 0

100010010 10k

FFT, 0dBFS (MIC TO ADC)

20

0

-20

-40

-60

-80

-100

AMPLITUDE (dBFS)

-120

-140

-160

-180 0 4000

FREQUENCY (Hz)

MCLK = 13MHz

AV

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)

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

-100

-120

-140 0 20,000

FREQUENCY (Hz)

MCLK = 13MHz

LRCLK = 44.1kHz

PLL MODE

AV

MICPRE_

15,00010,0005000

P-P

MAX98088 toc09

MAX98088 toc12

= 0dB

�� Maxim Integrated Products 29

(V

02

AVDD

= V

PVDD

= V

DVDD

= V

DVDDS1

SPK_P and SPK_N. Receiver load (R HPGND. RHP = J, R = +20dB, AV 0dB, AV

MICPGA_

= 0dB, AV

REC

= J, Z

REC

= 0dB, AV

SPK

DACATTN

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

SPK_

MAX98088

Stereo Audio Codec

with FlexSound Technology

Typical Operating Characteristics (continued)

= V

) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR to

REC

= J, C

REF

= 0dB, AV

DVDDS2

= 2.2FF, C

= +1.8V, V

MICBIAS

DACGAIN

SPKLVDD

= C

REG

= 0dB, AV

= V

SPKRVDD

= 1FF, C

ADCLVL

= 3.7V. Speaker loads (Z

C1N-C1P

= 0dB, AV

= 1FF, C

ADCGAIN

HPVDD

= C

= 0dB, AV

) connected between

SPK

= 1FF. AV

HPVSS

= 0dB, AV

PGAIN_

MICPRE_

HP_

=

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

LRCLK = 44.1kHz

AV

FREQUENCY (kHz)

MCLK = 12.288MHz

AV

FREQUENCY (kHz)

MCLK = 13MHz

PLL MODE

= 0dB

MICPRE_

15105

LRCLK = 48kHz

NI MODE

= 0dB

MICPRE_

15105

MAX98088 toc13

0

MAX98088 toc15

0

20

0

-20

-40

-60

-80

AMPLITUDE (dBFS)

-100

-120

-140

20

0

-20

-40

-60

-80

AMPLITUDE (dBFS)

-100

-120

-140

FFT, 0dBFS (MIC TO ADC)

MCLK = 12.288MHz

LRCLK = 48kHz

NI MODE

AV

MICPRE_

1515

FREQUENCY (kHz)

FFT, 0dBFS (MIC TO ADC)

MCLK = 12.288MHz

LRCLK = 96kHz

NI MODE

AV

MICPRE_

15105

FREQUENCY (kHz)

MAX98088 toc14

= 0dB

0

MAX98088 toc16

= 0dB

0

�� Maxim Integrated Products 30

MAXIM MAX98088 Technical data

Specifications and Main Features

Frequently Asked Questions

User Manual

General Description

Features

Simplified Block Diagram

TABLE OF CONTENTS

Functional Diagram

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

DIGITAL INPUT/OUTPUT CHARACTERISTICS

INPUT CLOCK CHARACTERISTICS

AUDIO INTERFACE TIMING CHARACTERISTICS

DIGITAL MICROPHONE TIMING CHARACTERSTICS

I2C TIMING CHARACTERSTICS

Power Consumption

Typical Operating Characteristics

Microphone to ADC