WM8750JL
Production Data
0.25
0.2
0
0.15
0.1
-20
-40
0.05
0
-0.05
-0.1
-0.15
-0.2
-0.25
-60
-80
-100
0
0.5
1
1.5
2
2.5
3
0
0.05
0.1
0.15
0.2
0.25
Frequency (Fs)
Frequency (Fs)
Figure 39 ADC Digital Filter Frequency Response – Type 2 Figure 40 ADC Digital Filter Ripple – Type 2
0.25
0
0.2
0.15
-20
0.1
0.05
-40
0
-0.05
-60
-0.1
-0.15
-80
-0.2
-0.25
-100
0
0.05
0.1
0.15
0.2
0.25
0
0.5
1
1.5
2
2.5
3
Frequency (Fs)
Frequency (Fs)
Figure 41 ADC Digital Filter Frequency Response – Type 2 Figure 42 ADC Digital Filter Ripple – Type 3
DE-EMPHASIS FILTER RESPONSES
0
0.4
0.3
0.2
0.1
0
-2
-4
-6
-0.1
-0.2
-0.3
-0.4
-8
-10
0
2000
4000
6000
8000
10000 12000 14000 16000
0
2000
4000
6000
8000
10000 12000 14000 16000
Frequency (Fs)
Frequency (Fs)
Figure 43 De-emphasis Frequency Response (32kHz)
Figure 44 De-emphasis Error (32kHz)
PD, April 2012, Rev 4.1
54
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
