Invention Grant
- Patent Title: Selective gain control circuit
- Patent Title (中): 选择增益控制电路
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Application No.: US13605919Application Date: 2012-09-06
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Publication No.: US08952795B2Publication Date: 2015-02-10
- Inventor: Zhihao Xu , Guangbin Zhang
- Applicant: Zhihao Xu , Guangbin Zhang
- Applicant Address: US CA Santa Clara
- Assignee: OmniVision Technologies
- Current Assignee: OmniVision Technologies
- Current Assignee Address: US CA Santa Clara
- Agency: Blakely Sokoloff Taylor & Zafman LLP
- Main IPC: H04N3/14
- IPC: H04N3/14 ; H04N5/335

Abstract:
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.
Public/Granted literature
- US20140062599A1 SELECTIVE GAIN CONTROL CIRCUIT Public/Granted day:2014-03-06
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