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:
Jul. 18, 2006
Filed:
Oct. 07, 2004
Sergey Alenin, Tucson, AZ (US);
Sergey Alenin, Tucson, AZ (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A bipolar rail-to-rail class-AB output stage that provides improved AC performance in low voltage applications. The bipolar output stage includes an input buffer stage, first and second complementary common emitter stages, and first and second control circuits biased and configured to assure class-AB operation of the first and second common emitter stages, respectively. The input of the bipolar output stage is applied to the input buffer stage, and the output of the bipolar output stage is provided by the second common emitter stage. The combination of the first common emitter stage and the first AB-control circuit operates as a current booster stage for the second common emitter stage, thereby obviating the need for a large power supply.