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:
Oct. 28, 1997
Filed:
Mar. 20, 1996
Takao Ito, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A differential amplifier circuit of the present invention includes a device ('transistor') having a back gate electrode formed above the base region of a bipolar transistor between the emitter and collector regions. The back gate electrode of one such transistor is connected to the collector or emitter of another transistor in order to provide positive feedback so that the operation of each transistor is enhanced. The operational speed of the transistors is increased and the amplification factor of the differential amplifier circuit is improved to provide stabilized circuit operation. Accordingly, the degree of circuit integration and the operational stability of the differential amplifier are enhanced as compared with a differential amplifier circuit constructed of conventional bipolar transistors or FETs.