A Design of Neural Signal Sensing LSI with Multi-Input-Channels(<Special Section>Analog Circuit Techniques and Related Topics)

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概要

• 論文の詳細を見る

• A neural-signal sensing system with multi-input-channels was designed utilizing a new chopper amplifier with direct connected to a multiplexer. The proposed system consists of multiplexers, chopper amplifiers, a multi-mode analog-to-digital converter (ADC), and a wireless transmitter. It enables to measure 50-channel signals at the same time, which are selected out of 100 channels to detect useful information. The test chip including 10-channel-inputs chopper-amplifier and multi-mode ADC, that was designed and fabricated with a mixed signal 0.35-μm CMOS technology. Utilizing the proposed direct chopper input scheme and the shared chopper amplifier, the circuits was designed with a small area of 9.4 mm^2. High accuracy channel selecting and multiplexing operations were confirmed, and an equivalent input noise of 10-nV/root-Hz was obtained with test chip measurements. Power dissipation of the chopper amplifier and the ADC were 6.0-mW and 2.5-mW at a 3-V supply voltage, respectively.

• 社団法人電子情報通信学会の論文
• 2004-02-01

著者

• Iwata Atsushi

  Graduate School Of Advanced Sciences Of Matter Hiroshima University

• Iwata A

  Hiroshima Univ. Higashi-hiroshima‐shi Jpn

• YOSHIDA Takeshi

  Graduate School of Human and Environmental Studies, Kyoto University

• IWATA Atsushi

  A-R-Tec Corporation

• Yoshida M

  Graduate School Of Advanced Sciences Of Matter Hiroshima University

• Uematsu Kazumasa

  Biosphere Sciences Hiroshima University

• Yoshida Masayuki

  Graduate School Of Advanced Sciences Of Matter Hiroshima University

• Yoshida Takeshi

  Graduate School Of Advanced Sciences Of Matter Hiroshima University

• Iwata Atsushi

  Electronic Materials And Devices Division Mitsubishi Petrochemical Co. Ltd.

• Yoshida T

  Graduate School Of Advanced Sciences Of Matter Hiroshima University

• Yoshiike Miki

  St. Marianna University

• MASHIMO Takayuki

  Graduate School of Advanced Sciences of Matter, Hiroshima University

• YOSHIDA Masayuki

  Biosphere Sciences, Hiroshima University

• Uematsu K

  Hiroshima Univ. Hiroshima Jpn

• Masui Yoshihiro

  Graduate School Of Advanced Sciences Of Matter Hiroshima University

• Mashimo Takayuki

  Graduate School Of Advanced Sciences Of Matter Hiroshima University

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