WM9712L Просмотр технического описания (PDF) - Wolfson Microelectronics plc

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производитель

WM9712L

AC’97 Audio and Touchpanel CODEC

Wolfson Microelectronics plc 

WM9712L

Production Data

REFERENCE VOLTAGES

Test Conditions

DBVDD=3.3V, DCVDD = 3.3V, AVDD = 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, 18-bit audio data unless otherwise stated.

PARAMETER

SYMBOL TEST CONDITIONS

MIN

TYP

MAX

UNIT

Audio ADCs, DACs, Mixers

Reference Input/Output

Buffered Reference Output

CAP2 pin

VREF pin

1.6

1.65

1.7

V

1.6

1.65

1.7

V

Microphone Bias

Bias Voltage

Bias Current Source

Output Noise Voltage

VMICBIAS

IMICBIAS

Vn

1K to 20kHz

2.88

2.97

3.06

V

3

mA

15

nV/Hz

DIGITAL INTERFACE CHARACTERISTICS

Test Conditions

DBVDD = 3.3V, DCVDD = 3.3V, TA = +25oC, unless otherwise stated.

PARAMETER

SYMBOL TEST CONDITIONS

MIN

TYP

MAX

Digital Logic Levels (all digital input or output pins) – CMOS Levels

Input HIGH level

Input LOW level

Output HIGH level

Output LOW level

VIH

VIL

VOH

source current = 2mA

VOL

sink current = 2mA

Clock Frequency

Master clock (XTLIN pin)

AC’97 bit clock (BIT_CLK pin)

AC’97 sync pulse (SYNC pin)

DBVDD0.7

DBVDD0.9

24.576

12.288

48

DBVDD0.3

DBVDD0.1

Note:

1. All audio and non-audio sample rates and other timing scales proportionately with the master clock.

2. For signal timing on the AC-Link, please refer to the AC’97 specification (Revision 2.2)

UNIT

V

V

MHz

MHz

kHz

w

PD, Rev 4.6, November 2011

10

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