WM8941GEFL/RV Wolfson Microelectronics, WM8941GEFL/RV Datasheet - Page 90

• Manufacturer Part Number: WM8941GEFL/RV
• Description: Audio CODECs Mono CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8941GEFL/RV

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-28
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8941
w
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
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