Low-Power and High-Sensitivity Magnetoresistive Random Access Memory Sensing Scheme with Body-Biased Preamplifier

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概要

• 論文の詳細を見る

• In this paper, we describe a new magnetoresistive random access memory (MRAM) sensing scheme with a body-biased preamplifier for low-power and high-sensitivity operation. The proposed new MRAM sense amplifier consists of a current sense preamplifier with a body biasing differential pair of a common-gate amplifier and a voltage sense amplifier. The preamplifier controls bitline voltage appropriately and amplifies the difference in bitline current as current-mode sense amplifier. The new sense amplifier enhances sensitivity, and the body-biased preamplifier enables low-voltage operation. To evaluate the proposed circuit, the modeling of magnetic tunnel junction (MTJ) resistance characteristics was performed with a VHDL-AMS description, and the proposed circuit was simulated with a mixed signal circuit simulator. From the simulation result, it is confirmed that the proposed sensing scheme results in a 1.57 times faster access time than a conventional scheme, and that the power of the sense amplifier is lower than that of the conventional amplifier at the same speed.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2006-04-30

著者

• Oh Hyuckjae

  Department Of Bioengineering And Robotics Tohoku University

• Deguchi Jun

  Department Of Neurosurgery Osaka Medical College

• Sugimura Takeaki

  Department Of Bioengineering And Robotics Graduate School Of Engineering Tohoku University

• Fukushima Takafumi

  Department Of Advanced Materials Chemistry Graduate School Of Engineering Yokohama National Universi

• Koyanagi Mitsumasa

  Department Of Bioengineering And Robotics Graduate School Of Engineering Tohoku University

• Sakaguchi Takeshi

  Department Of Bioengineering And Robotics Graduate School Of Engineering Tohoku University

• Choi Hoon

  Department Of Bioengineering And Robotics Tohoku University

• Fukushima Takafumi

  Department of Bioengineering and Robotics, Tohoku University, 6-6-01 Aza Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan

• Deguchi Jun

  Department of Bioengineering and Robotics, Graduate School of Engineering, Tohoku University, 6-6-01 Aza Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan

• Deguchi Jun

  Department of Bioengineering and Robotics, Tohoku University, 6-6-01 Aza Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan

• Sakaguchi Takeshi

  Department of Bioengineering and Robotics, Tohoku University, 6-6-01 Aza Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan

• Oh Hyuckjae

  Department of Bioengineering and Robotics, Tohoku University, 6-6-01 Aza Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan

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