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:
Dec. 18, 1984
Filed:
Apr. 11, 1984
Applicant:
Inventors:
Tetsuya Iida, Yokohama, JP;
Tatsuo Sakaue, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, , JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03F / ;
U.S. Cl.
CPC ...
3072 / ; 307304 ; 330296 ; 330302 ; 357 23 ;
Abstract
In an integrated circuit having an amplifier with its input terminal connected to a signal input terminal, a D.C. voltage bias circuit is provided which includes a D.C. bias voltage generator and a depletion mode MOS transistor connected at its source-drain path between the bias voltage generator and the signal input terminal and coupled at its gate electrode to either its source or its drain thus preventing breakdown of the gate insulating film of the depletion mode MOS transistor resulting from a surge voltage from the signal terminal.