WM8581 datasheet(13/100 Pages) WOLFSON

13 / 100 page

Production Data

WM8581

PD Rev 4.0 April 2007

Test Conditions

AVDD, PVDD, VREFP = 5V, DVDD = 3.3V, AGND, VREFN = 0V, PGND, DGND = 0V, TA = +25

oC, 1kHz Signal, fs = 48kHz,

24-Bit Data, Slave Mode, MCLK, ADCMCLK = 256fs, 1Vrms Input Signal Level unless otherwise stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

A-Weighted

@ fs = 96kHz, AVDD =

3.3V

A-Weighted

@ fs = 192kHz

Unweighted,

@ fs = 192kHz

A-Weighted

@ fs = 192kHz, AVDD

= 3.3V

1kHz, -1dB Full Scale

@ fs = 48kHz

-87

-80

1kHz, -1dB Full Scale

@ fs = 96kHz

-86

Total Harmonic Distortion

THD

1kHz, -1dB Full Scale

@ fs = 192kHz

-85

Dynamic Range

DNR

-60dB FS

100

ADC Channel Separation

1kHz Input

Channel Level Matching (See

Terminology note 4)

1KHz Signal

0.1

Channel Phase Deviation

1kHz Signal

0.0001

Degree

Offset Error

HPF On

HPF Off

100

LSB

Digital Logic Levels (CMOS Levels)

Input LOW level

VIL

0.3 x DVDD

Input HIGH level

VIH

0.7 x DVDD

Input leakage current

-1

±0.2

µA

Input capacitance

Output LOW

VOL

IOL=1mA

0.1 x DVDD

Output HIGH

VOH

IOH= -1mA

0.9 x DVDD

Analogue Reference Levels

Reference voltage

VVMID

VREFP/2 –

50mV

VREFP/2

VREFP/2 +

50mV

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