wm8941 Wolfson Microelectronics plc, wm8941 Datasheet - Page 89

• Manufacturer Part Number: wm8941
• Description: Mono Codec With Speaker Driver And Video Buffer
• Manufacturer: Wolfson Microelectronics plc

Production Data
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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
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Frequency (Hz)
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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
applications mode the filter is a 2
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Frequency (Hz)
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nd
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order high pass filter with a selectable cut-off frequency.
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.
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st
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order IIR with a cut-off of around 3.7Hz. In
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Frequency (Hz)
Frequency (Hz)
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PD, Rev 4.0, August 2008
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WM8941
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