WM8980CGEFL/RV WOLFSON [Wolfson Microelectronics plc], WM8980CGEFL/RV Datasheet - Page 115
WM8980CGEFL/RV
Manufacturer Part Number
WM8980CGEFL/RV
Description
Stereo CODEC with Speaker Driver and Video Buffer
Manufacturer
WOLFSON [Wolfson Microelectronics plc]
Datasheet
1.WM8980CGEFLRV.pdf
(123 pages)
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Pre-Production
HIGHPASS FILTER
Figure 61 ADC Highpass Filter Response, HPFAPP=0
Figure 62 ADC Highpass Filter Responses (48kHz),
Figure 64 ADC Highpass Filter Responses (12kHz),
w
-10
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-25
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-35
-40
-10
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-30
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-60
-70
-80
-90
-5
-10
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10
5
0
10
0
0
0
0
0
5
HPFAPP=1, all cut-off settings shown.
HPFAPP=1, all cut-off settings shown.
200
200
10
15
400
400
Frequency (Hz)
20
Frequency (Hz)
Frequency (Hz)
The WM8980 has a selectable digital highpass filter in the ADC filter path. This filter has two modes,
audio and applications. In audio mode the filter is a 1
applications mode the filter is a 2
600
600
25
30
800
800
35
1000
40
1000
45
1200
1200
nd
Figure 63 ADC Highpass Filter Responses (24kHz),
order high pass filter with a selectable cut-off frequency.
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10
0
0
HPFAPP=1, all cut-off settings shown.
200
st
order IIR with a cut-off of around 3.7Hz. In
400
Frequency (Hz)
600
800
PP, Rev 3.8, May 2012
1000
WM8980
1200
115
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