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:
Nov. 09, 2004
Filed:
Sep. 04, 2001
Applicant:
Inventors:
Hiroyuki Yamauchi, Osaka, JP;
Toshio Yamada, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 1/900 ;
U.S. Cl.
CPC ...
G01R 1/900 ;
Abstract
In order to enhance the sensitivity of a sense amplifier circuit, each one of the transistor pair composing the sense amplifier circuit is formed by transistors connected parallel in an even number of stages, and therefore the sense amplifier circuit is made of transistor pair having an extremely balanced characteristic, cancelling the asymmetricity of current-voltage characteristic of the transistor pair to null.