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. 02, 2003
Filed:
Apr. 01, 2002
Applicant:
Inventors:
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 ;
U.S. Cl.
CPC ...
H03F 3/45 ;
Abstract
A multi-stage differential amplifier with rail-to-rail input may utilize an output stage including first and second low-voltage rated transistors and first and second high-voltage transistors. The first low-voltage rated transistor and the first high-voltage rated transistor may be connected in series, and the second low-voltage rated transistor and the second high-voltage rated transistor may be connected in parallel. The low-voltage rated transistors are biased by signals provided by the input stage. In this way, the input stage controls the biasing of the low-voltage rated transistors in the output stage, thereby increasing the overall gain and speed of the amplifier system.