发明授权
- 专利标题: Optical signal receiving circuit
- 专利标题(中): 光信号接收电路
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申请号: US12350612申请日: 2009-01-08
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公开(公告)号: US08170425B2公开(公告)日: 2012-05-01
- 发明人: Hiroyuki Yoshioka , Ryuichi Satomura , Hideyuki Takahashi , Hidefumi Yoshida
- 申请人: Hiroyuki Yoshioka , Ryuichi Satomura , Hideyuki Takahashi , Hidefumi Yoshida
- 申请人地址: JP Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Miles & Stockbridge P.C.
- 优先权: JP2008-074848 20080324
- 主分类号: H04B10/06
- IPC分类号: H04B10/06
摘要:
To solve problematic trade-off between a bandwidth and a in-band deviation in an optical signal receiving circuit of a gigabit order that is required to have a wide dynamic range, the optical signal receiving circuit has a current-voltage conversion circuit that receives as an input a current signal outputted from a photoelectric conversion circuit for receiving and converting an optical signal into a current signal and converts it into a voltage signal, and realizes the wide dynamic range by providing the current-voltage conversion circuit with an AGC function and a phase compensation function by MOS transistors and a capacitance. Further, by providing the current-voltage conversion circuit with a second phase compensation function by a MOS transistor and a capacitance, it is made possible for the optical signal receiving circuit to reduce the in-band deviation at the time of minimum gain while securing the bandwidth at the time of maximum gain.
公开/授权文献
- US20090238581A1 OPTICAL SIGNAL RECEIVING CIRCUIT 公开/授权日:2009-09-24
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