WM9715L
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
Audio ADCs, DACs, Mixers
Reference Input/Output
Buffered Reference Output
Microphone Bias
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CAP2 pin
VREF pin
1.6
1.6
1.65
1.65
1.7
1.7
V
V
Bias Voltage
VMICBIAS
IMICBIAS
Vn
2.88
2.97
15
3.06
3
V
Bias Current Source
Output Noise Voltage
mA
1K to 20kHz
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
UNIT
Digital Logic Levels (all digital input or output pins) – CMOS Levels
Input HIGH level
VIH
VIL
DBVDD×0.7
DBVDD×0.9
V
V
Input LOW level
DBVDD×0.3
DBVDD×0.1
Output HIGH level
VOH
VOL
source current = 2mA
sink current = 2mA
Output LOW level
Clock Frequency
Master clock (XTLIN pin)
AC’97 bit clock (BIT_CLK pin)
AC’97 sync pulse (SYNC pin)
24.576
12.288
48
MHz
MHz
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)
PD Rev 4.0 December 2007
10
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
