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:
Jul. 18, 2000
Filed:
Sep. 10, 1998
Applicant:
Inventors:
Takahiro Shirai, Isehara, JP;
Shinichi Yamashita, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ; H03F / ;
U.S. Cl.
CPC ...
330 69 ; 330 84 ;
Abstract
An amplifier circuit for amplifying an input signal and outputting the amplified signal includes a first amplifier for outputting from a first output terminal a current proportional to a difference voltage between voltages at a first input terminal and a second input terminal, and a second amplifier for outputting from a second output terminal a current proportional to a difference voltage between voltages at the first input terminal and the second input terminal and for feeding back a current outputted from the second output terminal to the second input terminal, so that the amplifier circuit is operable at a supply voltage of 3 V.