The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 12, 2025
Filed:
May. 11, 2022
Hamamatsu Photonics K.k., Hamamatsu, JP;
Akihiro Shimada, Hamamatsu, JP;
Mitsuhito Mase, Hamamatsu, JP;
HAMAMATSU PHOTONICS K.K., Hamamatsu, JP;
Abstract
A signal processing circuit includes: a filter circuit that removes noise from a target signal; and a controller that controls the filter circuit. The filter circuit includes: a CMOS switch including a first MOSFET and a second MOSFET having different channel types and connected in parallel; and a capacitor electrically connected between an output of the CMOS switch and a ground potential. The controller switches a state of the CMOS switch between a first state in which the first MOSFET is in an ON state and a second state in which the first MOSFET is in an OFF state and the second MOSFET is in an ON state. An ON resistance value of the second MOSFET is higher than an ON resistance value of the first MOSFET.