CM6500B Datasheet, PDF (33/36 Pages) C-Media Electronics – USB Audio Sound Chip

CM6500 / CM6500B
USB Audio Sound Chip
8.5.2 ADC Audio Quality
TA=25℃, DV50=5V, AV50=5V, Input test signal is 997Hz sine wave, measure bandwidth is 20Hz to 20KHz
Items
Full scale output voltage
THD+N @ Vout=-3dB
Dynamic range with signal
present
Sampling frequency accuracy
Channel separation
Frequency Response
Test Conditions
Microphone
fs=48KHz
Microphone
fs=48KHz/16bits,A-Weighted
Microphone
fs=48KHz/16bits,A-Weighted
Microphone
fs=48KHz/16bits,A-Weighted
Microphone
fs=48KHz/16bits,A-Weighted
Microphone
fs=48KHz/16bits,A-Weighted
Test Values
Min Typ Max
1.11
-81
-89
90
+0.0001
+0.009
-0.433
-0.484
Passband Ripple
Microphone
fs=48KHz/16bits,A-Weighted
0.204
Unit
Vrms
dB
dB
%
dB
dB
dB
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