A New Differential-Amplifier-Based Offset-Cancellation Sense Amplifier for Speed-Improvement of High-Density Static Random Access Memories in Scaled-Down Complementary Metal–Oxide–Semiconductor Technology

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概要

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• A new differential-amplifier-based offset-cancellation sense amplifier (DOCSA) is proposed in order to improve operation speed of high-density, six-transistor-cell static random access memories (SRAMs) in scaled-down complementary metal–oxide–semiconductor (CMOS) technology. 40-nm node CMOS test chips were fabricated and measured to demonstrate the successful operation and performance of DOCSA. Simulated offset voltage of DOCSA was 60% compared to that of a conventional latch-type sense amplifier with the same input capacitance, and the bit-line delay in an SRAM is expected to be 60% by using DOCSA. The standard deviation of measured offset voltage in DOCSA agreed well with that of the simulated one. Combination of CMOS scaling and deviation-relief circuit technology becomes important in advanced LSI technology.

• 2010-04-25

著者

• 林 喜宏

  NECシステムデバイス研究所

• 林 喜宏

  日本電気株式会社デバイスプラットフォーム研究所

• 林 喜宏

  日本電気株式会社マイクロエレクトロニクス研究所 超高集積回路研究部

• HAYASHI Yoshihiro

  Device Platforms Research Labs., NEC.

• Hayashi Yoshihiro

  Nec Corporation

• Hayashi Yoshihiro

  LSI Fundamental Research Laboratory, NEC Electronics Corporation, 1120 Shimokuzawa, Sagamihara, Kanagawa 229-1198, Japan

• Koichi Takeda

  LSI Fundamental Research Laboratory, NEC Electronics Corporation, 1120 Shimokuzawa, Sagamihara, Kanagawa 229-1198, Japan

• Ikeda Hidetoshi

  LSI Fundamental Research Laboratory, NEC Electronics Corporation, 1120 Shimokuzawa, Sagamihara, Kanagawa 229-1198, Japan

• Takeda Koichi

  LSI Fundamental Research Laboratory, NEC Electronics Corporation, 1120 Shimokuzawa, Sagamihara, Kanagawa 229-1198, Japan

• Nomura Masahiro

  LSI Fundamental Research Laboratory, NEC Electronics Corporation, 1120 Shimokuzawa, Sagamihara, Kanagawa 229-1198, Japan

• Yoshihiro Hayashi

  LSI Fundamental Research Laboratory, NEC Electronics Corporation, 1120 Shimokuzawa, Sagamihara, Kanagawa 229-1198, Japan

• Hayashi Yoshihiro

  System Devices Research Laboratories, NEC Corporation, 1120 Shimokuzawa, Sagamihara, Kanagawa 229-1198, Japan

• Hayashi Yoshihiro

  System Devices Research Laboratories, NEC, 1120 Shimokuzawa, Sagamihara, Kanagawa 229-1198, Japan

• Hayashi Yoshihiro

  System Devices and Fundamental Research, NEC Corporation, 1120, Shimokuzawa, Sagamihara, Kanagawa 229-1198, Japan

• Hayashi Yoshihiro

  Microelectronics Research Laboratories, NEC, 1120, Shimokuzawa, Sagamihara, Kanagawa 229, Japan

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