发明名称 |
ULTRA LOW CUT-OFF FREQUENCY FILTER |
摘要 |
An ultra low cut-off frequency filter. A filter circuit includes a control circuit responsive to an input signal and a feedback signal to generate a control signal. The filter circuit includes a controllable resistor coupled to the control circuit. The controllable resistor is responsive to a reference signal and the control signal to generate the feedback signal. The filter circuit includes a feedback path coupled to the control circuit and the controllable resistor to couple the feedback signal from the controllable resistor to the control circuit, thereby removing noise from at least one of the input signal and the reference signal, and preventing voltage error in the filter circuit.
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申请公布号 |
US2013021092(A1) |
申请公布日期 |
2013.01.24 |
申请号 |
US201113009868 |
申请日期 |
2011.01.20 |
申请人 |
COSMIC CIRCUITS PRIVATE LIMITED;BHATTACHARYYA PRASUN KALI;CHAKKIRALA SUMANTH;EASWARAN PRAKASH |
发明人 |
BHATTACHARYYA PRASUN KALI;CHAKKIRALA SUMANTH;EASWARAN PRAKASH |
分类号 |
H03K5/00 |
主分类号 |
H03K5/00 |
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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