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. 21, 2002
Filed:
Mar. 16, 1999
Toshiki Rai, Gifu-ken, JP;
Sadao Yoshikawa, Gifu-ken, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A high speed sense amp supplies current to a bit line connected to a memory cell transistor and also detects a potential of the bit line. The potential of the bit line varies according to a conductive state of the memory cell transistor. The sense amp includes a load element and a first transistor connected in series between a first potential and the bit line. A second transistor is connected between the first potential and the bit line. The bit line is input to an inverter that has its output terminal connected to a gate of the first transistor. A differential amp has a first input terminal connected to a reference potential and a second input terminal connected to a node between the load element and the first transistor. The output of the differential amp indicates a difference between the reference potential and the bit line potential.