WM8941GEFL WOLFSON [Wolfson Microelectronics plc], WM8941GEFL Datasheet - Page 90
![no-image](/images/no-image-200.jpg)
WM8941GEFL
Manufacturer Part Number
WM8941GEFL
Description
Mono CODEC with Speaker Driver and Video Buffer
Manufacturer
WOLFSON [Wolfson Microelectronics plc]
Datasheet
1.WM8941GEFL.pdf
(96 pages)
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HIGHPASS FILTER
Figure 52 ADC High Pass Filter Responses (24kHz),
HPFAPP=1, all cut-off settings shown.
Figure 50 ADC High Pass Filter Response, HPFAPP=0
-10
-15
-20
-25
-30
-35
-40
-5
5
0
0
-10
-20
-30
-40
-50
-60
-70
-80
10
0
0
5
10
200
15
Frequency (Hz)
20
400
The WM8941 has a selectable digital high pass filter in the ADC filter path. This filter has two
modes, audio and applications. In audio mode the filter is a 1
3.7Hz.
frequency.
25
Frequency (Hz)
600
30
In applications mode the filter is a 2
35
800
40
45
1000
1200
Figure 51 ADC High Pass Filter Responses (48kHz),
HPFAPP=1, all cut-off settings shown.
Figure 53 ADC High Pass Filter Responses (12kHz),
HPFAPP=1, all cut-off settings shown.
-10
-20
-30
-40
-50
-60
10
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
10
0
0
0
nd
order high pass filter with a selectable cut-off
200
200
400
400
st
order IIR with a cut-off of around
Frequency (Hz)
Frequency (Hz)
600
PP, Rev 3.3, December 2007
600
800
800
Pre Production
1000
1000
1200
1200
90
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