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:
Jun. 25, 2002
Filed:
Sep. 03, 1999
Applicant:
Inventor:
Daniel L. Essig, Cardiff by the Sea, CA (US);
Assignee:
Conexant Systems, Inc., Newport Beach, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 1/10 ; G05F 3/02 ;
U.S. Cl.
CPC ...
G05F 1/10 ; G05F 3/02 ;
Abstract
A bandgap reference voltage circuit is provided that substantially prevents noise sensitivity. The bandgap reference voltage circuit includes an operational amplifier, transistors, and a resistive element on one input of the operational amplifier. The resistive element substantially prevents noise from creating a non-zero mean change in current across one of the transistors. Thus, the resistive element substantially precludes noise from being rectified by a transistor, so that the output reference voltage of the bandgap reference voltage circuit is substantially stable and fixed.