wm8976gefl-v Wolfson Microelectronics plc, wm8976gefl-v Datasheet - Page 104

• Manufacturer Part Number: wm8976gefl-v
• Description: Stereo Codec With Speaker Driver
• Manufacturer: Wolfson Microelectronics plc

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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HPFAPP=1, all cut-off settings shown.
HPFAPP=1, all cut-off settings shown.
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Frequency (Hz)
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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
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nd
Figure 55 ADC Highpass Filter Responses (24kHz),
order high pass filter with a selectable cut-off frequency.
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HPFAPP=1, all cut-off settings shown.
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st
order IIR with a cut-off of around 3.7Hz. In
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Frequency (Hz)
600
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PD Rev 4.4 July 2009
Production Data
1000
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