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:
Feb. 27, 1979
Filed:
Jul. 18, 1977
Applicant:
Inventor:
Robert S Green, Richardson, TX (US);
Assignee:
Mostek Corporation, Carrollton, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307304 ; 3072 / ; 307297 ;
Abstract
Threshold voltage regulation of field-effect transistors on a common substrate of an integrated circuit is achieved by adjusting the back bias on the substrate using a charge pump that is selectively operated whenever the threshold voltage of a designated enhancement mode FET falls below a reference voltage. A voltage divider provides the reference voltage that is applied to the gate of the enhancement mode FET, which when turned-on enables the charge pump.