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. 30, 2015
Filed:
Jun. 29, 2012
Yongsik Youn, Cupertino, CA (US);
Sooho Cha, Seoul, KR;
Chan-kyung Kim, Hwaseong-si, KR;
Abstract
Example embodiments include a resistive type memory sense amplifier circuit including differential output terminals, first and second input terminals, a pre-charge section, and other components arranged so that current is re-used during at least a 'set' or 'amplification' stage of the sense amplifier circuit, thereby reducing overall current consumption of the circuit, and improving noise immunity. A voltage level of a high-impedance output terminal is caused to swing in response to a delta average current between a reference line current and a bit line current. During a “go” or “latch” stage of operation, a logical value “0” or “1” is latched at the differential output terminals based on positive feedback of a latch circuit. Also disclosed is a current mirror circuit, which can be used in conjunction with the disclosed sense amplifier circuit. In yet another embodiment, a sense amplifier circuit includes the capability of read/re-write operation.