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:
Mar. 27, 1990
Filed:
Nov. 09, 1988
Applicant:
Inventor:
Yuji Hishiki, Tokyo, JP;
Assignee:
Seiko Instruments Inc., , JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330253 ; 330 51 ; 379324 ;
Abstract
The amplifier circuit is arranged such that an open drain type amplifying circuit is provided on the side of output of a differential amplifying circuit having an active load. In this arrangement, the differential amplifying circuit is brought into a non-operational state, and at the same moment an electric potential of output of the differential amplifying circuit is fixedly set to a predetermined level. Consequently, the open drain type amplifying circuit is surely kept in the non-operational state.