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:
Oct. 02, 2007
Filed:
Mar. 23, 2004
Joichiro Ezaki, Tokyo, JP;
Yuji Kakinuma, Tokyo, JP;
Keiji Koga, Tokyo, JP;
Shigekazu Sumita, Tokyo, JP;
Joichiro Ezaki, Tokyo, JP;
Yuji Kakinuma, Tokyo, JP;
Keiji Koga, Tokyo, JP;
Shigekazu Sumita, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A magnetic memory device and a sense amplifier circuit capable of obtaining a read signal output with a high S/N ratio and reducing power consumption and a circuit space, and a method of reading from a magnetic memory device are provided. In a sense amplifier, transistors (A), (B) which are differential amplifiers are commonly connected to one constant current circuit () through switches () ( . . . ,+1, . . . ). Corresponding bit decode lines () ( . . . ,+1, . . . ) and a read selection signal line () are connected to the switches () ( . . . ,+1, . . . ). A read/write signal is transferred from the read selection signal line (), and the switches () operate according to a bit decode value and the read/write signal.