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:
Sep. 13, 2016
Filed:
Jul. 11, 2014
Applicant:
Qualcomm Incorporated, San Diego, CA (US);
Inventor:
Vincenzo Peluso, San Diego, CA (US);
Assignee:
QUALCOMM INCORPORATED, San Diego, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 1/02 (2006.01); H03F 3/00 (2006.01); H03F 3/45 (2006.01); H03F 1/30 (2006.01);
U.S. Cl.
CPC ...
H03F 3/005 (2013.01); H03F 1/303 (2013.01); H03F 3/45179 (2013.01); H03F 2200/231 (2013.01); H03F 2203/45156 (2013.01);
Abstract
A current sense circuit having a single opamp DC offset auto-zero capability that allows for continuous current sensing operation while at the same time providing for DC offset sensing and compensation. The single opamp design can operate in a first phase to sense and store a DC offset, while providing an output to drive an output stage of the current sense circuit. The single opamp design can operate in a second phase, using the sensed DC offset to generate an accurate output that can drive the output stage and which can be used in the first phase.