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:
Apr. 26, 2016
Filed:
Jan. 28, 2014
Applicant:
Meng Wang, Tianjin, CN;
Inventor:
Meng Wang, Tianjin, CN;
Assignee:
FREESCALE SEMICONDUCTOR, INC., Austin, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03L 5/00 (2006.01); H03K 5/24 (2006.01);
U.S. Cl.
CPC ...
H03K 5/2481 (2013.01);
Abstract
An apparatus to remove an input offset voltage of a comparator circuit includes an input voltage offset capacitor, control logic to charge and discharge the capacitor to provide an offset cancelation voltage. The offset cancellation voltage removes the input offset voltage of the comparator dependent upon an output of the comparator circuit. A switching arrangement controlled by the control logic switches signals between the capacitor and the control logic.