STM Journals Peer-reviewed research from Consortium e-Learning Network

Nano Trends – A Journal of Nano Technology & Its Applications

Low Power, High Speed and High Density Magnetic Comparator using Spintronic Devices

  1. Yogendra Kumar Upadhyaya
  2. Mohd. Hasan
  3. Sudhanshu Maheshwari

Abstract

Energy efficient design is of paramount importance in the present era. Dynamic magnetic comparators are used to design high speed and low power ADCs (Analog to digital converters). This paper presents a novel conventional MTJ and motion of domains in a magnetic strip based magnetic double tail comparator, which is area and power proficient, compared to other comparators. The proposed magnetic double tail comparator consumes 15.225 µW power and 0.6369 fJ energy at a supply voltage of 0.75 V. SPICE compatible Verilog-A models are used for the MTJ and domain wall motion based magnetic strip. The performance of the proposed hybrid magnetic comparator has been evaluated in terms of delay and power using these models along with PTM CMOS 45 nm model. The proposed comparator can operate at a clock frequency from 7.8 to 2.4 GHz at source voltages of 0.6 and 0.5 V respectively. Keywords: Double-tail comparator, domain wall motion, MTJ, spintronics, comparator
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