Patent ID: 11902686
Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A photodetection device comprising:
a first pixel that is configured to generate a first pixel signal;
a reference signal generator that is configured to generate a reference signal; and
a first converter that includes a first buffer circuit and a first comparison circuit and that is configured to convert the first pixel signal into a digital code, the first buffer circuit configured to output a first signal corresponding to the reference signal from an output terminal, and the first comparison circuit configured to perform a comparison operation on a basis of the first pixel signal and the first signal, wherein
the reference signal generator is configured to output the reference signal from an output terminal, and
the first buffer circuit includes a first buffer transistor having a gate coupled to the output terminal of the reference signal generator, and a source coupled to the output terminal of the first buffer circuit, and a first current source coupled to the source of the first buffer transistor.