发明授权
- 专利标题: Selective gain control circuit
- 专利标题(中): 选择增益控制电路
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申请号: US13605919申请日: 2012-09-06
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公开(公告)号: US08952795B2公开(公告)日: 2015-02-10
- 发明人: Zhihao Xu , Guangbin Zhang
- 申请人: Zhihao Xu , Guangbin Zhang
- 申请人地址: US CA Santa Clara
- 专利权人: OmniVision Technologies
- 当前专利权人: OmniVision Technologies
- 当前专利权人地址: US CA Santa Clara
- 代理机构: Blakely Sokoloff Taylor & Zafman LLP
- 主分类号: H04N3/14
- IPC分类号: H04N3/14 ; H04N5/335
摘要:
A circuit for providing signal amplification with reduced fixed pattern noise. In an embodiment, the circuit includes an amplifier and a plurality of legs coupled in parallel with one another between a first node for an input of the amplifier and a second node for an output of the amplifier. Control logic selects a first combination of the plurality of legs for a first configuration of the circuit to provide a first loop gain with the amplifier. In another embodiment, the control logic further selects a second combination of the plurality of legs for a second configuration of the circuit to provide a second loop gain with the amplifier, wherein the first loop gain is substantially equal to the second loop gain.
公开/授权文献
- US20140062599A1 SELECTIVE GAIN CONTROL CIRCUIT 公开/授权日:2014-03-06
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