wm9712l Wolfson Microelectronics plc, wm9712l Datasheet - Page 8

• Manufacturer Part Number: wm9712l
• Description: Ac?97 Audio And Touchpanel Codec
• Manufacturer: Wolfson Microelectronics plc

WM9712L
w
AUDIO INPUTS
AUXILIARY MONO DAC (AUXDAC)
Test Conditions
DBVDD=3.3V, DCVDD = 3.3V, AVDD = 3.3V, T
LINEINL/R, MICL/R and PHONE pins
Full Scale Input Signal Level
(for ADC 0dB Input at 0dB Gain)
Input Resistance
Input Capacitance
Line input to ADC (LINEINL, LINEINR, PHONE)
Signal to Noise Ratio
(A-weighted)
Total Harmonic Distortion
Power Supply Rejection
Microphone input to ADC (MIC1/2 pins)
Signal to Noise Ratio
(A-weighted)
Total Harmonic Distortion
Power Supply Rejection Ratio
Common Mode Rejection Ratio
Test Conditions
AVDD = 3.3V, T
Resolution
Full scale output voltage
Signal to Noise Ratio
(A-weighted)
Total Harmonic Distortion
PARAMETER
PARAMETER
A
= +25
o
C, unless otherwise stated.
SYMBOL
SYMBOL
CMRR
PSRR
PSRR
V
SNR
SNR
SNR
THD
THD
THD
R
INFS
IN
A
differential input mode
= +25
Differential mic mode
TEST CONDITIONS
20dB boost enabled
20dB boost enabled
TEST CONDITIONS
12dB PGA gain
20Hz to 20kHz
0dB PGA gain
AVDD = 3.3V
AVDD = 1.8V
AVDD=3.3V
o
(MS = 01)
C, 1kHz signal, fs = 48kHz, 18-bit audio data unless otherwise stated.
-6dBFs
MIN
MIN
10
85
65
half of the value listed above
0.545
TBD
TYP
TYP
1.0
-87
-80
-62
34
16
92
50
80
50
12
70
5
1
PD Rev 4.5 August 2006
MAX
MAX
-80
-50
22
Production Data
V rms
Vrms
UNIT
UNIT
bits
kΩ
pF
dB
dB
dB
dB
dB
dB
dB
dB
dB
8