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:
May. 20, 1997
Filed:
Sep. 29, 1995
Applicant:
Inventors:
Frederic M Stubbe, Irvine, CA (US);
Edward W MacRobbie, Lake Forest, CA (US);
Daryush Shamlou, Laguna Niguel, CA (US);
Assignee:
Rockwell International Corporation, Seal Beach, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330-9 ; 330258 ;
Abstract
A differential amplifier with improved offset cancellation is disclosed. The differential amplifier has a floating current source coupled to the drain terminals of the differential pair for providing complementary currents to cancel the offset voltage. In this way, the tail current in the differential pair is not affected by the offset cancellation and remains constant, while the common-mode offset is not worsened by the injected current.