Invention Grant
- Patent Title: Light receiving circuit
- Patent Title (中): 光接收电路
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Application No.: US14213389Application Date: 2014-03-14
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Publication No.: US08907717B2Publication Date: 2014-12-09
- Inventor: Fumiyasu Utsunomiya
- Applicant: Seiko Instruments Inc.
- Applicant Address: JP Chiba
- Assignee: Seiko Instruments Inc.
- Current Assignee: Seiko Instruments Inc.
- Current Assignee Address: JP Chiba
- Agency: Brinks Gilson & Lione
- Priority: JP2013-055357 20130318
- Main IPC: H01L31/00
- IPC: H01L31/00 ; H03K5/153

Abstract:
The light receiving circuit includes: a photoelectric conversion element for causing a current corresponding to an amount of incident light to flow; a MOS transistor including a source connected to the photoelectric conversion element and a drain connected to a node, for causing the current of the photoelectric conversion element to flow to the node while maintaining a voltage of the source to a first voltage; a reset circuit for causing a current to flow from the node to a GND terminal so that a voltage of the node becomes a second voltage lower than the first voltage; a control circuit for outputting a reset signal to the reset circuit; and a voltage increase detection circuit for detecting a fluctuation in the voltage of the node and outputting a detection result.
Public/Granted literature
- US20140266368A1 LIGHT RECEIVING CIRCUIT Public/Granted day:2014-09-18
Information query
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