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WM8940GEFL/RV 参数 Datasheet PDF下载

WM8940GEFL/RV图片预览
型号: WM8940GEFL/RV
PDF下载: 下载PDF文件 查看货源
内容描述: 单声道编解码器与扬声器驱动器 [Mono CODEC with Speaker Driver]
分类和应用: 解码器驱动器编解码器
文件页数/大小: 85 页 / 819 K
品牌: WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
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WM8940  
Pre-Production  
HIGHPASS FILTER  
The WM8940 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 1st order IIR with a cut-off of around  
3.7Hz. In applications mode the filter is a 2nd order high pass filter with a selectable cut-off  
frequency.  
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Figure 42 ADC High pass Filter Response, HPFAPP=0  
Figure 43 ADC High pass Filter Responses (48kHz),  
HPFAPP=1, all cut-off settings shown.  
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Figure 44 ADC High pass Filter Responses (24kHz),  
HPFAPP=1, all cut-off settings shown.  
Figure 45 ADC Highpass Filter Responses (12kHz),  
HPFAPP=1, all cutoff settings shown.  
Pre-Production, Rev 3.0, February 2007  
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