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:
Sep. 22, 1992
Filed:
Dec. 11, 1990
Applicant:
Inventor:
Georges Neu, Mariel sur Mauldre, FR;
Assignee:
Bull S.A., Paris, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
307491 ; 3072966 ; 307362 ;
Abstract
For use with an inverter including CMOS transistors, a device for compensating inherent variations in electrical properties among MOS integrated circuits, the device including a generator of a reference signal representing conduction of a reference transistor; two threshold amplifiers; two switches; and two compensating transistors. If, for example, a first transistor is weak, switches are employed to selectively activate one or more supplementary transistors to add a compensating current to a current furnished by the first transistor so as to provide a reliably uniform output current as compared with a plurality of other MOS integrated circuits.