WM8983 datasheet(13/129 Pages) CIRRUS

номер детали	WM8983

подробное описание детали	Mobile Multimedia CODEC with 1W Speaker Driver

PDF	129 Pages

Scroll/Zoom	100%

производитель	CIRRUS [Cirrus Logic]

домашняя страница	http://www.cirrus.com

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13 / 129 page

WM8983

Rev 4.6

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

Speaker Output (LOUT2, ROUT2 with 8

 bridge tied load, INVROUT2=1)

Full scale output voltage, 0dB gain. 7

SPKBOOST=0

AVDD2/

3.3

Vrms

SPKBOOST=1

(AVDD2/

3.3)*1.5

Output Power

Output power is very closely correlated with THD; see below

Total Harmonic Distortion

THD

PO =200mW, RL = 8,

AVDD2=3.3V

0.04

-68

PO =320mW, RL = 8,

AVDD2=3.3V

1.0

-40

PO =500mW, RL = 8,

AVDD2=5V

0.02

-74

PO =860mW, RL = 8,

AVDD2=5V

1.0

-40

Signal to Noise Ratio

SNR

AVDD2=3.3V,

RL = 8

AVDD2=5V,

RL = 8

Power Supply Rejection Ratio

(50Hz-22kHz)

PSRR

RL = 8 BTL

RL = 8 BTL AVDD2=5V

(boost)

Microphone Bias

Bias Voltage

MBVSEL=0

0.9 x

AVDD1

MBVSEL=1

0.65 x

AVDD1

Bias Current Source

for VMICBIAS within +/-3%

Output Noise Voltage

1kHz to 20kHz

nV/

Hz

Digital Input / Output

Input HIGH Level

VIH

0.7



DBVDD

Input LOW Level

VIL

0.3



DBVDD

Output HIGH Level

VOH

IOL=1mA

0.9



DBVDD

Output LOW Level

VOL

IOH=1mA

0.1 x

DBVDD

Input Capacitance

All digital pins

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