Invention Grant
- Patent Title: Light receiving circuit and light coupling device
- Patent Title (中): 光接收电路和光耦合器件
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Application No.: US14634245Application Date: 2015-02-27
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Publication No.: US09562808B2Publication Date: 2017-02-07
- Inventor: Masayuki Sugizaki , Shigeyuki Sakura , Toyoaki Uo
- Applicant: KABUSHIKI KAISHA TOSHIBA
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Patterson & Sheridan, LLP
- Priority: JP2014-176591 20140829
- Main IPC: H01J40/14
- IPC: H01J40/14 ; G01J1/44 ; H04B10/80 ; H03F1/08 ; H03F1/22 ; H03F3/08

Abstract:
A light receiving circuit includes a light receiving element, a first transistor that includes a control terminal which is connected to the light receiving element through a first node, a first terminal and a second terminal, a first load circuit that is connected between a power supply potential and a second node connected to the second terminal, and outputs a voltage signal to a third node, wherein the voltage signal is based on a current signal in the light receiving element, a first feedback resistor that is connected between the first node and the third node, a first limiter circuit that is connected in parallel with the first feedback resistor, and limits an increase of voltage at both ends of the first feedback resistor, and a first circuit that is connected between the second node and the reference potential, includes a second transistor which is diode-connected.
Public/Granted literature
- US20160061658A1 LIGHT RECEIVING CIRCUIT AND LIGHT COUPLING DEVICE Public/Granted day:2016-03-03
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