A Tunable Majority Gate-Based Full Adder Using Current-Induced Domain Wall Nanomagnets
Keywords
Domain wall (DW) motion; domain wall nanomagnet (DWNM); high density logic; magnetic full adder (FA); Magnetic majority gate (MG)
Abstract
Domain wall nanomagnet (DWNM)-based devices have been extensively studied as a promising alternative to the conventional CMOS technology in both the memory and logic implementations due to their non-volatility, near-zero standby power, and high integration density characteristics. In this paper, we leverage a physics-based model of a DWNM device to design a highly scalable current-mode majority gate to achieve a novel one bit full-adder (FA) circuit. The modeled DWNM specifications are calibrated with the experimentally measured data. The functionality of the proposed DWNM-based FA (DWNM-FA) is verified using a SPICE circuit simulator. The detailed analysis and the calculations have been performed to realize the proposed DWNM-FA delay and power consumption corresponding to the various induced input currents at different operating temperatures. The power-delay product of DWNM-FA is examined to tune the operation within the optimum induced input current region to obtain desired power-delay requirements over a range of 200 μA to 1 mA at temperatures from 298 to 378 K. Finally, the comparison results exhibit 52% and 49% area improvement as well as 41% and 31% improvement in device count complexity over CMOS-based and magnetic tunnel junction-based FA designs, respectively.
Publication Date
8-1-2016
Publication Title
IEEE Transactions on Magnetics
Volume
52
Issue
8
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1109/TMAG.2016.2540600
Copyright Status
Unknown
Socpus ID
84979640086 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/84979640086
STARS Citation
Roohi, Arman; Zand, Ramtin; and Demara, Ronald F., "A Tunable Majority Gate-Based Full Adder Using Current-Induced Domain Wall Nanomagnets" (2016). Scopus Export 2015-2019. 2488.
https://stars.library.ucf.edu/scopus2015/2488