WM8850 데이터 시트보기 (PDF) - Wolfson Microelectronics plc
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WM8850 Datasheet PDF : 223 Pages
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WM8850
Pre-Production
Test Conditions
AVDD = CPVDD = 5V, DBVDD = 3.3V, DCVDD = 1.8V, TA = +25oC, 1kHz signal, fs = 48kHz, 24-bit data unless otherwise stated.
PARAMETER
ADC2 Performance
SYMBOL
TEST CONDITIONS
MIN
TYP MAX UNIT
Unweighted
100
dB
Signal to Noise Ratio
Dynamic Range
Total Harmonic Distortion
SNR
DNR
THD
A-weighted
A-weighted
fs=96kHz
A-weighted
-60dBFS
-1dBFS
95
103
dB
103
dB
103
dB
-95
-90
dB
Channel Separation
1kHz
20Hz to 20kHz
87
dB
84
dB
Channel Level Matching
0dBFS
0.1
dB
Channel Phase Deviation
0.01
°
Power Supply Rejection
Ratio
PSRR
1kHz, 100mVpp on AVDD
20Hz to 20kHz, 100mVpp on AVDD
90
dB
70
dB
Test Conditions
AVDD = CPVDD = 5V, DBVDD = 3.3V, DCVDD = 1.8V, TA = +25oC, 1kHz signal, fs = 48kHz, 24-bit data unless otherwise stated.
PARAMETER
SYMBOL
Microphone Bias Generator
Output Voltage
TEST CONDITIONS
VRefEn[2:0] = 001
VRefEn[2:0] = 100
MIN
TYP MAX UNIT
0.5x
AVDD
V
0.8x
AVDD
V
Current Source Capability
2.5
mA
Power Supply Rejection
Ratio
PSRR
1kHz, 100mVpp on AVDD
20Hz to 20kHz, 100mVpp on AVDD
100
dB
88
dB
w
PP, April 2011, Rev 3.2
16
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