A Stable SPICE Macro-Model for Magnetic Tunnel Junctions for Applications in Memory and Logic Circuits

Author

Mukherjee, Sankha S. ; Kurinec, Santosh K.

Author_Institution

Microelectron. Eng. Dept., Rochester Inst. of Technol., Rochester, NY, USA

Volume

45

Issue

9

fYear

2009

Firstpage

3260

Lastpage

3268

Abstract

A generalized circuit macro-model has been developed representing field-switchable magnetic tunnel junctions (MTJs) characterized by two distinct voltage-dependent resistance values in parallel and antiparallel states. General-purpose subcircuit implementations are designed for a switchable voltage-dependent resistor capable of implementing using any version of SPICE, and thus the users are not restricted to HSPICE. Convergence related problems previously reported have been addressed. Transient simulation of a flash-comparator circuit using three MTJs in series is successfully demonstrated showing the robustness of the model.

Keywords

MRAM devices; SPICE; circuit simulation; comparators (circuits); magnetic tunnelling; magnetoresistive devices; resistors; transient analysis; HSPICE; SPICE macromodel; convergence related problems; flash-comparator circuit; magnetic tunnel junctions; subcircuit implementations; switchable voltage-dependent resistor; transient simulation; Giant magnetoresistance (GMR); SPICE; macromodel; magnetic random access memory (MRAM); model; tunneling magnetoresistance (TMR);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2009.2021263

Filename

5208590