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WM9711 Datasheet(PDF) 9 Page - Wolfson Microelectronics plc

Part # WM9711
Description  LOW POWER AUDIO CODEC FOR PORTABLE APPLICATIONS
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM9711 Datasheet(HTML) 9 Page - Wolfson Microelectronics plc

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Production Data
WM9711L
w
PD Rev 4.1 April 2004
9
REFERENCE VOLTAGES
Test Conditions
DBVDD=3.3V, DCVDD = 3.3V, AVDD = 3.3V, TA = +25
oC, 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
CAP2 pin
1.6
1.65
1.7
V
Buffered Reference Output
VREF pin
1.6
1.65
1.7
V
Microphone Bias
Bias Voltage
VMICBIAS
2.88
2.97
3.06
V
Bias Current Source
IMICBIAS
3
mA
Output Noise Voltage
Vn
1K to 20kHz
15
nV/
√Hz
DIGITAL INTERFACE CHARACTERISTICS
Test Conditions
DBVDD = 3.3V, DCVDD = 3.3V, TA = +25
oC, unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Digital Logic Levels (all digital input or output pins) – CMOS Levels
Input HIGH level
VIH
DBVDD
×0.7
V
Input LOW level
VIL
DBVDD
×0.3
V
Output HIGH level
VOH
source current = 2mA
DBVDD
×0.9
Output LOW level
VOL
sink current = 2mA
DBVDD
×0.1
Clock Frequency
Master clock (XTLIN pin)
24.576
MHz
AC’97 bit clock (BIT_CLK pin)
12.288
MHz
AC’97 sync pulse (SYNC pin)
48
kHz
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)


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