WM1811A datasheet(23/328 Pages) WOLFSON

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Production Data

WM1811A

PD, November 2013, Rev 4.1

MULTI-PATH CROSSTALK

Test Conditions

AVDD1=3.0V (powered from LDO1), DCVDD=1.05V (powered from LDO2),

AVDD2=DBVDD1=DBVDD2=DBVDD3=CPVDD=1.8V, LDO1VDD=SPKVDD1=SPKVDD2=5V,

DGND=AGND=CPGND=SPKGND1=SPKGND2=HP2GND=0V,

TA = +25

oC, 1kHz sinusoidal signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Headset Voice Call:

DAC/Headset to Tx Voice

Separation

1kHz 0dBFS DAC playback direct

to HPOUT1L and HPOUT1R;

Quiescent input on IN1LN/P or

IN1RN/P (Gain=+12dB),

differential line output; Measure

crosstalk at differential line output

Speakerphone Voice Call:

DAC/Speaker to Tx Voice

Separation

1kHz 0dBFS DAC playback to

speakers, 1W/chan output;

Quiescent input on IN1LN/P or

IN1RN/P (Gain=+12dB),

differential line output; Measure

crosstalk at differential line output

100

Earpiece PCM Voice Call:

RXVOICE to Tx Voice Separation

fs=8kHz for ADC and DAC,

DAC_SB_FILT=1; -5dBFS, DAC

output to HPOUT2P-HPOUT2N;

Quiescent input on input PGA

(Gain=+12dB) to ADC via MIXINL

or MIXINR; Measure crosstalk at

ADC output

110

Speakerphone PCM Voice Call:

DAC/Speaker to ADC Separation

fs=8kHz for ADC and DAC,

DAC_SB_FILT=1; 0dBFS DAC

output to speaker (1W output);

ADC record from input PGA

(Gain=+30dB); Measure crosstalk

on ADC output

MIXINL or

MIXINR

ADCL or

ADCR

CROSSTALK

+30dB

IN1L, IN2L,

IN1R or IN2R

Quiescent

input

IN1LN, IN2LN,

IN1RN or IN2RN

IN1LP, IN2LP,

IN1RP or IN2RP

SPKMIXL

DACL

RLOAD =

8Ohm

0dB

SPKOUTLP

SPKOUTLN

0dB

SPKLVOL

SPKMIXR

RLOAD =

8Ohm

0dB

SPKOUTRP

SPKOUTRN

0dB

SPKRVOL

DACR

Speakerphone PCM Voice Call:

ADC to DAC/Speaker Separation

fs=8kHz for ADC and DAC,

DAC_SB_FILT=1; Quiescent DAC

output to speaker; ADC record

from input PGA (Gain=+30dB +

30dB boost); Measure crosstalk on

speaker output

MIXINL or

MIXINR

ADCL or

ADCR

+30dB

IN1L, IN2L,

IN1R or IN2R

1kHz input

IN1LN, IN2LN,

IN1RN or IN2RN

IN1LP, IN2LP,

IN1RP or IN2RP

SPKMIXL

DACL

RLOAD =

8Ohm

0dB

SPKOUTLP or

SPKOUTRP

SPKOUTLN or

SPKOUTRN

0dB

SPKLVOL

+30dB

gain

CROSSTALK

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