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:
Dec. 31, 2002
Filed:
Nov. 13, 2000
Applicant:
Inventors:
Marco Corsi, Parker, TX (US);
Kenneth G. Maclean, Dallas, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/26 ; H03F 3/18 ;
U.S. Cl.
CPC ...
H03F 3/26 ; H03F 3/18 ;
Abstract
A class 'AB' amplifier output stage has an active current bias source that provides base drive current to the output transistors that is proportional to the signal input voltage level. The output transistor currents are modulated with the input signal such that the quiescent supply current is reduced to a very small level.