发明名称 |
Switched-capacitor cosine filter circuit |
摘要 |
A switched-capacitor cosine filter circuit includes a differential amplifier and a switched-capacitor circuit. A set of control signals cause the switched-capacitor circuit to selectively couple the inputs and output of the differential amplifier thereby producing a switched input signal for the differential amplifier. During alternating states of the control signals, the switched-capacitor cosine filter circuit samples the input signal as a noninverting and inverting integrator circuit.
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申请公布号 |
US6191648(B1) |
申请公布日期 |
2001.02.20 |
申请号 |
US19990294635 |
申请日期 |
1999.04.19 |
申请人 |
NATIONAL SEMICONDUCTOR CORPORATION |
发明人 |
LEWICKI LAURENCE DOUGLAS |
分类号 |
H03H19/00;H03K5/24;(IPC1-7):H03K5/00 |
主分类号 |
H03H19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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