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:
Jul. 08, 2025
Filed:
Sep. 28, 2022
Applicant:
Stmicroelectronics (Alps) Sas, Grenoble, FR;
Inventor:
Vratislav Michal, Fontanil-Cornillon, FR;
Assignee:
STMicroelectronics (Alps) SAS, Grenoble, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J 1/42 (2006.01); G01J 1/44 (2006.01); H03F 3/45 (2006.01);
U.S. Cl.
CPC ...
G01J 1/4204 (2013.01); G01J 1/44 (2013.01); G01J 2001/446 (2013.01); H03F 3/45071 (2013.01); H03F 2200/375 (2013.01);
Abstract
A circuit can be used for reading out a light sensor. The circuit includes an operational amplifier. A first capacitor has a first electrode coupled to an inverting input of the operational amplifier and a second electrode coupled to a non-inverting output of the operational amplifier. A compensation circuit is coupled between the operational amplifier and the first capacitor. A preset circuit has an input coupled to a first voltage node and an output coupled to the first capacitor. The first voltage node configured to carry a first voltage equal to a preset voltage multiplied by a coefficient.