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:
Jul. 20, 1993
Filed:
Sep. 30, 1991
Applicant:
Inventors:
Rainer Kraus, Munich, DE;
Kurt Hoffmann, Taufkirchen, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323313 ; 3072961 ; 3072966 ;
Abstract
A band gap reference circuit configuration includes first and second bipolar transistors having base-to-emitter voltages. An emitter resistor is connected to the first bipolar transistor. An operational amplifier is connected to the bipolar transistors for processing a difference generated between the base-to-emitter voltages of the first and second bipolar transistors to generate a largely temperature-independent reference voltage. The bipolar transistors are parasitic transistors, and the operational amplifier is constructed in MOS technology.