WM9712L
AUDIO INPUTS
Production Data
Test Conditions
DBVDD=3.3V, DCVDD = 3.3V, AVDD = 3.3V, T
A
= +25
o
C, 1kHz signal, fs = 48kHz, 18-bit audio data unless otherwise stated.
PARAMETER
Full Scale Input Signal Level
(for ADC 0dB Input at 0dB Gain)
SYMBOL
V
INFS
TEST CONDITIONS
AVDD = 3.3V
AVDD = 1.8V
differential input mode
(MS = 01)
Input Resistance
Input Capacitance
Line input to ADC (LINEINL, LINEINR, PHONE)
Signal to Noise Ratio
(A-weighted)
Total Harmonic Distortion
Power Supply Rejection
Signal to Noise Ratio
(A-weighted)
Total Harmonic Distortion
Power Supply Rejection Ratio
Common Mode Rejection Ratio
SNR
THD
PSRR
SNR
THD
PSRR
CMRR
Differential mic mode
-6dBFs
20Hz to 20kHz
20dB boost enabled
20dB boost enabled
85
92
-87
50
80
-80
50
TBD
-80
dB
dB
dB
dB
dB
dB
dB
R
IN
0dB PGA gain
12dB PGA gain
10
MIN
TYP
1.0
0.545
half of the value listed above
34
16
5
22
pF
kΩ
MAX
UNIT
V rms
LINEINL/R, MICL/R and PHONE pins
Microphone input to ADC (MIC1/2 pins)
AUXILIARY MONO DAC (AUXDAC)
Test Conditions
AVDD = 3.3V, T
A
= +25
o
C, unless otherwise stated.
PARAMETER
Resolution
Full scale output voltage
Signal to Noise Ratio
(A-weighted)
Total Harmonic Distortion
SNR
THD
AVDD=3.3V
65
SYMBOL
TEST CONDITIONS
MIN
TYP
12
1
70
-62
-50
MAX
UNIT
bits
Vrms
dB
dB
w
PD Rev 4.0 December 2003
8
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
