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:
May. 08, 2012
Filed:
May. 07, 2010
Naoki Isoda, Tokyo, JP;
Naoki Isoda, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A fully-differential amplifier circuit comprises a differential amplifier configured to differentially amplify first and second input signals serving as an input differential pair to generate a pair of first and second intermediate signals, first and second class AB amplifiers configured to amplify the first and second intermediate signals to generate first and second output signals, wherein the first and second output signals serve as an output differential pair, the first class AB amplifier amplifies the first intermediate signal with reference to a reference voltage adjusted by a first feedback signal that is a common mode component of the first output signal and the second output signal, and the second class AB amplifier amplifies the second intermediate signal with reference to a reference voltage adjusted by a second feedback signal that is a common mode component of the first output signal and the second output signal.