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:
Mar. 12, 2024
Filed:
Nov. 30, 2021
Applicant:
Pixart Imaging Incorporation, Hsinchu, TW;
Inventor:
Chuang-Shen Voo, Penang, MY;
Assignee:
PIXART IMAGING INCORPORATION, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/575 (2006.01); G05F 1/46 (2006.01); G05F 3/26 (2006.01);
U.S. Cl.
CPC ...
G05F 1/575 (2013.01); G05F 3/262 (2013.01);
Abstract
A switch circuit includes: a switch coupled to control an electrical parameter of a main circuit. A. PSRR of the main circuit is determined by the switch; a first driver configured to operably drive the switch, wherein the first driver is powered by a supply current; and a supply transistor configured to operably generate the supply current, wherein the supply transistor is biased in a subthreshold region, such that the PSRR of the main circuit is higher than a predetermined level within a predetermined frequency range.