C0402C225M9PAC 데이터 시트보기 (PDF) - Wolfson Microelectronics plc
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C0402C225M9PAC Datasheet PDF : 178 Pages
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Production Data
Single-ended stereo record from analogue microphones - IN2L / IN2R pins to ADC output
Test conditions:
L_MODE = R_MODE = 00b (Single ended)
LIN_VOL = RIN_VOL = 11111b (+28.3dB)
Total signal path gain = +34.3dB, incorporating 6dB single-ended to differential conversion gain
PARAMETER
SYMBOL TEST CONDITIONS
MIN
TYP
Single-ended mic input full-scale
Signal Level (for ADC 0dBFS
output)
0.019
-34.3
0.055
Input Resistance
Input Capacitance
DC offset
Rin
10
Cin
At ADC output with
ADC_HPF_ENA=0
12
10
11864
47
Signal to Noise Ratio
SNR
A-weighted
73
Total Harmonic Distortion
THD
-35dBV input
-78
Total Harmonic Distortion + Noise
THD+N
-35dBV input
-77
Channel Level Matching
1kHz signal, -35dBV
+/-3
Power Supply Rejection Ratio
PSRR
1kHz, 100mVpk-pk
60
20kHz, 100mV pk-pk
40
WM8903
MAX
UNIT
Vrms
dBV
Vpk-pk
k
pF
LSBs (24-bit)
LSBs (16-bit)
dBFS
dBFS
dBFS
dB
dB
Differential stereo record from analogue microphones - IN1L+IN2L / IN1R+IN2R pins to ADC output
Test conditions:
L_MODE = R_MODE = 10b (Differential mic)
LIN_VOL = RIN_VOL = 00111b (+30dB)
Total signal path gain = +30dB
PARAMETER
SYMBOL TEST CONDITIONS
MIN
Differential Mic Input Full Scale
Signal Level
IN1L-IN2L / IN1R-IN2R (for ADC
0dBFS output)
Input Resistance
Input Capacitance
DC Offset
Rin
100
Cin
At ADC output with
ADC_HPF_ENA=0
Signal to Noise Ratio
Total Harmonic Distortion
Total Harmonic Distortion + Noise
Common Mode Rejection Ratio
Channel Separation
Channel Level Matching
PSRR (Referred to Input)
SNR
THD
THD+N
CMRR
PSRR
A-weighted
-31dBV input
-31dBV input
1kHz, 100mVpk-pk
1kHz signal, -31dBV
10kHz signal, -31dBV
1kHz signal, -31dBV
1kHz, 100mVpk-pk
20kHz, 100mV pk-pk
TYP
0.032
-30
0.089
120
10
189813
742
75
-78
-72
60
85
80
+/-1
60
40
MAX
UNIT
Vrms
dBV
Vpk-pk
k
pF
LSBs (24-bit)
LSBs (16-bit)
dBFS
dBFS
dBFS
dB
dB
dB
dB
w
PD, Rev 4.5, June 2012
11
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