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:
Apr. 07, 1992
Filed:
Apr. 08, 1991
Applicant:
Inventors:
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323314 ; 323316 ; 3072968 ;
Abstract
A reference voltage generating circuit in a CMOS semiconductor integrated circuit comprises a first reference voltage circuit for generating a first reference voltage by means of a MOS transistor having a first channel type, a second reference voltage circuit for generating a second reference voltage by means of a MOS transistor having a second channel type, and a comparator circuit for comparing the first and second reference voltages and feeding back the output corresponding to the result of the comparison, to the first reference voltage circuit to produce a third reference voltage.