发明公开
- 专利标题： Digital noise shaper circuit
- 专利标题（中）： Digitale Rauschformerschaltung。
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申请号： EP93202772.5申请日： 1991-01-31
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公开(公告)号： EP0586021A1公开(公告)日： 1994-03-09
- 发明人: Ferguson, Paul F. Jr. , Adams, Robert W. , Ganesan, Apparajan
- 申请人： ANALOG DEVICES, INCORPORATED
- 申请人地址： One Technology Way, P.O. Box 9106 Norwood, MA 02062-9106 US
- 专利权人： ANALOG DEVICES, INCORPORATED
- 当前专利权人： ANALOG DEVICES, INCORPORATED
- 当前专利权人地址： One Technology Way, P.O. Box 9106 Norwood, MA 02062-9106 US
- 代理机构： Warren, Anthony Robert
- 优先权： US472706 19900131; US498941 19900326
- 主分类号： H03M7/32
- IPC分类号： H03M7/32 ; H03M3/02
摘要：
The invention relates to a digital noise shaper circuit for generating an output digital data stream having pre-defined noise characteristics from a multi-bit input digital data stream. The noise shaper circuit includes a greater than two-pole digital filter network (1902-1910) for receiving and processing an error signal to generate the output data stream, a comparator (1924) responsive to the output data stream for generating a feedback signal, a feedback processing network (1926-1934) responsive to the feedback signal for frequency-shaping the feedback signal, and adders (1912-1920) for digitally adding the multi-bit input digital data stream and the frequency-shaped feedback signal to generate the error signal.
公开/授权文献
- EP0586021B1 Digital noise shaper circuit 公开/授权日：1996-11-27
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