Pre-Production
Differential Stereo Line Record
- IN2L+IN3L / IN2R+IN3R pins to ADC output
Test conditions:
L_MODE = R_MODE = 01b (Differential Line)
LIN_VOL = RIN_VOL = 00101b (0dB)
Total signal path gain = 0dB
PARAMETER
Line Input Full Scale Signal Level
applied to IN2L or IN2R (for ADC
0dBFS output)
IN3L, IN3R input range
Input Resistance
Input Capacitance
Signal to Noise Ratio
R
in
C
in
SNR
A-weighted
ADC_OSR128 = 0
ADC_128_OSR_TST_
MODE = 1
ADC_BIASx1P5 = 1
A-weighted
Best performance
mode::
ADC_OSR128 = 1
ADC_128_OSR_TST_
MODE = 0
ADC_BIASx1P5 = 0
Total Harmonic Distortion + Noise
Common Mode Rejection Ratio
Channel Separation
Channel Level Matching
Power Supply Rejection Ratio
PSRR
THD+N
CMRR
-1dBV input
1kHz, 100mV pk-pk
1kHz signal, -1dBV
10kHz signal, -1dBV
1kHz signal, -1dBV
217Hz, 100mVpk-pk
1kHz, 100mV pk-pk
-78
60
85
80
+/-1
55
55
-66
81
91
9
12
10
80
SYMBOL
TEST CONDITIONS
MIN
TYP
1.00
0
2.83
MAX
WM8904
UNIT
Vrms
dBV
Vpk-pk
mV
k
pF
dB
dB
dB
dB
dB
dB
w
PP, Rev 3.3, September 2012
13
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
