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:
Jun. 20, 2000
Filed:
Mar. 02, 1998
Atsushi Hirabayashi, Tokyo, JP;
Kosuke Fujita, Kanagawa, JP;
Kenji Komori, Tokyo, JP;
Norihiro Murayama, Chiba, JP;
Sony Corporation, Tokyo, JP;
Abstract
An amplifier circuit in which a differential pair of transistors (1a), (1b) is provided. An impedance (2) of a value 2.Z.sub.e is connected in series between the emitters of the transistors (1a), (1b) and these emitters are grounded by way of current sources (3a), (3b) respectively. Input signal sources (4a), (4b) of voltage values.+-.V.sub.IN are connected to the bases of the transistors (1a), (1b) by way of the base-emitter paths of the transistors (5a), (5b) which form a buffer circuit (10). The emitters of the transistors (5a), (5b) are in turn grounded by way of current sources (6a), (6b) respectively. Further, the collectors of each of the transistors (1a), (1b) are connected to the base of the other transistors by way of the base-emitter paths of the transistors (5a), (5b) respectively.