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:
Nov. 28, 1995
Filed:
Aug. 24, 1994
Applicant:
Inventors:
Kwok-Fu Chiu, San Jose, CA (US);
Don R Sauer, San Jose, CA (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330253 ; 330 51 ; 330261 ; 330295 ; 330298 ; 330311 ;
Abstract
An AB Cascode amplifier provides low quiescent current operation, while maintaining the high gain and wide bandwidth of prior art folded cascode amplifier. Instead of fixed current sources, the AB cascode amplifier uses variable current sources, which are biased by a fixed small current source and two variable biased transistor.