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. 05, 2020
Filed:
Sep. 26, 2017
Applicant:
Texas Instruments Incorporated, Dallas, TX (US);
Inventors:
Assignee:
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01); H03F 1/26 (2006.01); H03F 1/02 (2006.01);
U.S. Cl.
CPC ...
H03F 3/45748 (2013.01); H03F 1/26 (2013.01); H03F 3/456 (2013.01); H03F 3/45183 (2013.01); H03F 3/45475 (2013.01); H03F 3/45479 (2013.01); H03F 3/45973 (2013.01); H03F 2200/129 (2013.01); H03F 2200/135 (2013.01); H03F 2203/45031 (2013.01); H03F 2203/45051 (2013.01); H03F 2203/45056 (2013.01); H03F 2203/45116 (2013.01); H03F 2203/45142 (2013.01); H03F 2203/45212 (2013.01); H03F 2203/45354 (2013.01); H03F 2203/45588 (2013.01);
Abstract
An offset cancellation circuit and method are provided where successive stages of cascaded amplifiers are operated in a saturated state. Biasing is provided, by a feedback amplifier, connected in a feedback loop for each cascaded amplifier, so as to be responsive, in a non-saturated state, to the input of an associated amplifier stage operating in the saturated state.