The impact of current controlled-MOS current mode logic/magnetic tunnel junction hybrid circuit for stable and high-speed operation

Tetsuo Endoh, Masashi Kamiyanagi, Masakazu Muraguchi, Takuya Imamoto, Takeshi Sasaki

Research output: Contribution to journalArticlepeer-review

Abstract

In order to realize Integrated Circuits (IC) with operation over the 10 GHz range, conventional CMOS logic faces critical issues, such as increasing power consumption, and difficulty to aggressively scale the device size and so on. To overcome this issue, we have proposed Current Controlled-MOS Current Mode Logic (CC-MCML) to realize the reduction of power consumption and the enhancement of the operation speed in logic circuits without scaling the gate length of the MOSFET, and confirmed the performance of these circuits both theoretically and experimentally. In the CC-MCML it is extremely important to control the input voltage of the MOSFET used as the constant current source in order to make the base voltage of the input signal and the output signal equivalent. In this paper, we propose CC-MCML/MTJ (Magnetic Tunnel Junction) circuit, which is one type of nonvolatile memory hybrid circuit technology. A more stable and precise operation is realized by cutting the range of the input voltage of the constant current source, and it is shown that the operation of CC-MCML/MTJ Hybrid Circuit enables us to suppress the base voltage difference due to the Vth fluctuation in comparison with the conventional CC-MCML. These results imply the high potential of Si- CMOS/Spintronics Hybrid technologies for future IC.

Original languageEnglish
Pages (from-to)743-750
Number of pages8
JournalIEICE Transactions on Electronics
VolumeE94-C
Issue number5
DOIs
Publication statusPublished - 2011 May

Keywords

  • Current Controlled-MCML
  • MCML
  • MTJ
  • Stability
  • Vth fluctuation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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