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Specifications are subject to change without notice
MEDIATEK CONFIDENTIAL, NO DISCLOSURE
22
9-3 Built-in Audio-ADC Characteristics
Test Condition:
DSP MIC1 Gain = 0 (0)
MIC threshold=0
DSP MIC2 Gain = 0dB.(2000)
Apwin output Z= 600
Echo level = 0 dB
Measure SPDIF output.
CIC filter right shift 3 bit
Test signal : 1K Hz sin wave
Vpp(V)
Max Input (with output THD+N <60
dbfs)
2.9
DC bias level
1.3
Test signal : 1K Hz sin wave
Input (Vpp)
Output
THD+N(dBFs)
3V -45
2.828V -65
2.75V -65.6
2.5V -66
2V -66.5
1.5V -66.7
1V -66.6
0.5V -67.8
Test signal : 2.828 Vpp
Input frequency:
Amp(dBFS)
1 KHz
-0.544
4KHz -0.574
8khz -0.66
16KHz -0.981
20KHz -1.24
22KHz -2.44
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