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:
Aug. 20, 2013
Filed:
Oct. 27, 2004
Hiroshi Tsuchi, Tokyo, JP;
Hiroshi Tsuchi, Tokyo, JP;
NEC Corporation, , JP;
NEC Electronics Corporation, , JP;
Abstract
A differential amplifier has first and second input terminals (T, T), an output terminal, a differential stage connected to the first and second input terminals, and an amplification stage having an input terminal thereof connected to an output terminal of the differential stage and an output terminal thereof connected to the output terminal. The differential stage includes a first differential pair with one of an input pair thereof connected to the first input terminal (T) and the other connected to the output terminal, a second differential pair with one of an input pair thereof connected to the first input terminal (T) and the other connected to the second input terminal (T), a first current source for supplying current to the first differential pair, a second current source for supplying current to the second differential pair, and a load circuit connected to the output pairs of the first and second differential pairs. One of the output pair of the first differential pair is connected in common to one of the output pair of the second differential pair, and their common connection node constitutes the output terminal of the differential stage.