Patent ID: 9562808
Date: 2017-02-07
CPC Classifications: G01J,H03F,H04B

Claim:
1. A light receiving circuit, comprising: a light receiving element connected to a first node; a first transistor having a control terminal connected to the light receiving element through the first node, a first terminal connected to a first reference potential, and a second terminal connected to a second node; a first load circuit connected between the second node and a first power supply potential that is higher than the first reference potential, the first load circuit configured to output a voltage signal to a third node, the voltage signal corresponding to a current signal generated by the light receiving element; a first feedback resistor connected between the first node and the third node; a first limiter circuit connected in parallel with the first feedback resistor and configured to limit an increase in voltage across the first feedback resistor; and a second transistor that is diode-connected and connected between the second node and the first reference potential.