18727000. SIGNAL GENERATION CIRCUIT AND PHOTODETECTION APPARATUS (SONY SEMICONDUCTOR SOLUTIONS CORPORATION)

SIGNAL GENERATION CIRCUIT AND PHOTODETECTION APPARATUS

Organization Name

SONY SEMICONDUCTOR SOLUTIONS CORPORATION

Inventor(s)

Masahiro Ichihashi of Fukuoka JP

Hiroki Hidaka of Fukuoka JP

Kokid Miyamoto of Tokyo JP

SIGNAL GENERATION CIRCUIT AND PHOTODETECTION APPARATUS

This abstract first appeared for US patent application 18727000 titled 'SIGNAL GENERATION CIRCUIT AND PHOTODETECTION APPARATUS

Original Abstract Submitted

A signal generation circuit of the present disclosure includes: a current source that is configured to flow a current from a first power supply node to a first node; a first capacitor that has one end coupled to the first node and another end coupled to a second node; an operation amplifier circuit that has a positive input terminal, a negative input terminal coupled to the second node, and an output terminal coupled to an output node; a first switch that has one end coupled to the second node and another end coupled to the output node; a second capacitor that has one end coupled to the first node and another end coupled to the output node; a first resistor that is provided in a first path that couples the first node and a second power supply node; and a second switch that is provided in the first path and is configured to turn on and off the first path.