WM9712LGEFL/V Wolfson Microelectronics, WM9712LGEFL/V Datasheet - Page 10

• Manufacturer Part Number: WM9712LGEFL/V
• Description: Multimedia Misc Stereo AC'97 CODEC T/P Interface
• Manufacturer: Wolfson Microelectronics
• Type: Audio and Touchpanel Codecr

Specifications of WM9712LGEFL/V

• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Mounting Style: SMD/SMT
• Package / Case: QFN
• Audio Codec Type: Stereo
• No. Of Adcs: 3
• No. Of Dacs: 3
• No. Of Input Channels: 8
• No. Of Output Channels: 4
• Adc / Dac Resolution: 12bit
• Adcs / Dacs Signal To Noise Ratio: 94dB
• Sampling Rate: 48kHz
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM9712L
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REFERENCE VOLTAGES
DIGITAL INTERFACE CHARACTERISTICS
Note:
1.
2.
Test Conditions
DBVDD=3.3V, DCVDD = 3.3V, AVDD = 3.3V, T
Audio ADCs, DACs, Mixers
Reference Input/Output
Buffered Reference Output
Microphone Bias
Bias Voltage
Bias Current Source
Output Noise Voltage
Test Conditions
DBVDD = 3.3V, DCVDD = 3.3V, T
Digital Logic Levels (all digital input or output pins) – CMOS Levels
Input HIGH level
Input LOW level
Output HIGH level
Output LOW level
Clock Frequency
Master clock (XTLIN pin)
AC’97 bit clock (BIT_CLK pin)
AC’97 sync pulse (SYNC pin)
All audio and non-audio sample rates and other timing scales proportionately with the master clock.
For signal timing on the AC-Link, please refer to the AC’97 specification (Revision 2.2)
PARAMETER
PARAMETER
A
CAP2 pin
VREF pin
SYMBOL
SYMBOL
= +25
V
I
MICBIAS
MICBIAS
V
V
V
Vn
V
OH
OL
IH
IL
o
C, unless otherwise stated.
A
= +25
source current = 2mA
TEST CONDITIONS
TEST CONDITIONS
sink current = 2mA
1K to 20kHz
o
C, 1kHz signal, fs = 48kHz, 18-bit audio data unless otherwise stated.
DBVDD×0.9
DBVDD×0.7
2.88
MIN
MIN
1.6
1.6
24.576
12.288
1.65
1.65
2.97
TYP
TYP
15
48
DBVDD×0.3
DBVDD×0.1
PD Rev 4.5 August 2006
MAX
MAX
3.06
1.7
1.7
3
Production Data
nV/√Hz
UNIT
UNIT
MHz
MHz
kHz
mA
V
V
V
V
V
10