WM8976GEFL/V Wolfson Microelectronics, WM8976GEFL/V Datasheet - Page 104

• Manufacturer Part Number: WM8976GEFL/V
• Description: Audio CODECs Mono ADC Stereo DAC with Spkr
• Manufacturer: Wolfson Microelectronics

Specifications of WM8976GEFL/V

• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8976
HIGHPASS FILTER
Figure 53 ADC Highpass Filter Response, HPFAPP=0
Figure 54 ADC Highpass Filter Responses (48kHz),
Figure 56 ADC Highpass Filter Responses (12kHz),
w
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0
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0
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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 WM8976 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
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1200
nd
Figure 55 ADC Highpass Filter Responses (24kHz),
order high pass filter with a selectable cut-off frequency.
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0
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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
PD Rev 4.4 July 2009
Production Data
1000
1200
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