WM8983 datasheet(8/129 Pages) CIRRUS

8 / 129 page

WM8983

Rev 4.6

ELECTRICAL CHARACTERISTICS

Test Conditions

DCVDD=1.8V, AVDD1=AVDD2=DBVDD=3.3V, TA = +25

oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Microphone Input PGA Inputs (LIP, LIN, RIP, RIN, L2, R2)

INPPGAVOLL, INPPGAVOLR, PGABOOSTL and PGABOOSTR = 0dB

Full-scale Input Signal Level

–

Single-ended input via LIN/RIN 1

AVDD/3.3

Vrms

Full-scale Input Signal Level

–

Pseudo-differential input 1,2

AVDD*0.7/

3.3

Vrms

Input PGA equivalent input noise

INPPGAVOLL/R = +35.25dB

No input signal

22Hz to 20kHz

150

μV

LIN, RIN input resistance

INPPGAVOLL and

INPPGAVOLR = +35.25dB

1.7



LIN, RIN input resistance

INPPGAVOLL and

INPPGAVOLR = 0dB



LIN, RIN input resistance

INPPGAVOLL and

INPPGAVOLR = -12dB



LIP, RIP input resistance

All gain settings



L2, R2 input resistance

L2_2INPPGA and

R2_2INPPGA = 1

L2_2BOOSTVOL and

R2_2BOOSTVOL = 000



L2, R2 input resistance

L2_2INPPGA and

R2_2INPPGA = 0

L2_2BOOSTVOL and

R2_2BOOSTVOL = +6dB



L2, R2 input resistance

L2_2INPPGA and

R2_2INPPGA = 0

L2_2BOOSTVOL and

R2_2BOOSTVOL = 0dB



L2, R2 input resistance

L2_2INPPGA and

R2_2INPPGA = 0

L2_2BOOSTVOL and

R2_2BOOSTVOL = -12dB



Input Capacitance

All analogue input pins

Input PGA Programmable Gain

Gain adjusted by

INPPGAVOLL and

INPPGAVOLL

-12

+35.25

Programmable Gain Step Size

Guaranteed monotonic

0.75

Input PGA Mute Attenuation

INPPGAMUTEL and

INPPGAMUTER = 1

100

Input Gain Boost

PGABOOSTL and

PGABOOSTR = 0

Input Gain Boost

PGABOOSTL and

PGABOOSTR = 1

+20

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