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WM8904 Datasheet(PDF) 13 Page - Wolfson Microelectronics plc

Part # WM8904
Description  Ultra Low Power CODEC for Portable Audio Applications
Download  188 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8904 Datasheet(HTML) 13 Page - Wolfson Microelectronics plc

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Pre-Production
WM8904
w
PP, Rev 3.3, September 2012
13
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
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Line Input Full Scale Signal Level
applied to IN2L or IN2R (for ADC
0dBFS output)
1.00
0
2.83
Vrms
dBV
Vpk-pk
IN3L, IN3R input range
mV
Input Resistance
Rin
9
12
k
Input Capacitance
Cin
10
pF
Signal to Noise Ratio
SNR
A-weighted
ADC_OSR128 = 0
ADC_128_OSR_TST_
MODE = 1
ADC_BIASx1P5 = 1
80
dB
A-weighted
Best performance
mode::
ADC_OSR128 = 1
ADC_128_OSR_TST_
MODE = 0
ADC_BIASx1P5 = 0
81
91
Total Harmonic Distortion + Noise
THD+N
-1dBV input
-78
-66
dB
Common Mode Rejection Ratio
CMRR
1kHz, 100mV pk-pk
60
dB
Channel Separation
1kHz signal, -1dBV
85
dB
10kHz signal, -1dBV
80
Channel Level Matching
1kHz signal, -1dBV
+/-1
dB
Power Supply Rejection Ratio
PSRR
217Hz, 100mVpk-pk
55
dB
1kHz, 100mV pk-pk
55


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