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:
Aug. 05, 1997
Filed:
May. 18, 1995
Applicant:
Inventors:
Suresh M Menon, Sunnyvale, CA (US);
Tsung Chuan Whang, Cupertino, CA (US);
Assignee:
Dynachip Corporation, Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
327541 ; 327540 ; 327543 ; 327546 ; 323313 ; 323315 ;
Abstract
A biasing system for a differential amplifier includes an NMOS current source and a gate bias voltage generator. The gate bias voltage generator produces a bias voltage VNCS to control the NMOS current source. The gate bias generator includes a reference current generator to produce a reference current relatively independent of supply voltage variations. A temperature compensator regulates the reference current to provide a temperature compensated current. A current mirror duplicates the temperature compensated current to a bias voltage generator. The bias voltage generator generates the bias voltage.