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. 29, 2017
Filed:
Aug. 28, 2015
Applicant:
Stmicroelectronics International N.v., Amsterdam, NL;
Inventors:
Nitin Gupta, Kurukshetra, IN;
Abhirup Lahiri, Delhi, IN;
Assignee:
STMicroelectroinics International N.V., Amsterdam, NL;
Primary Examiner:
Int. Cl.
CPC ...
G05F 3/04 (2006.01); G05F 3/26 (2006.01); G05F 3/02 (2006.01);
U.S. Cl.
CPC ...
G05F 3/262 (2013.01); G05F 3/02 (2013.01);
Abstract
A current mirror circuit provides a current to drive a load. A noise cancelling circuit is provided to keep the load current constant in spite of variations in the supply voltage. The noise cancelling circuit includes an auxiliary current path which branches from the load current path. The length-to-width ratios of transistors of the circuit are selected to provide the desired noise cancellation while maintaining device stability.