A Neural Recording Amplifier with Low-Frequency Noise Suppression

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概要

• 論文の詳細を見る

• To detect neural spike signals, low-power neural signal recording frontend circuits must amplify neural signals with below 100µV amplitude and a few hundred Hz frequency while suppressing a large DC offset voltage, 1/f noise of MOSFETs, and induced noise of AC power supply. To overcome the problem of unwanted noise at such a low signal level, a low-noise neural signal detection amplifier with low-frequency noise suppression scheme was developed utilizing a new autozeroing technique. A test chip was designed and fabricated with a mixed signal 0.18-µm CMOS technology. The voltage gain of 39dB at the bandwidth of the neural signal and the gain reduction of 20dB at AC supply noise of 60Hz were obtained. The input equivalent noise and power dissipation were 90nV/root-Hz and 90µW at a supply voltage of 1.5V, respectively.

• （社）電子情報通信学会の論文
• 2010-06-01

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

• MASUI Yoshihiro

  Graduate School of Advanced Sciences of Matter, Hiroshima University

• YOSHIDA Masayuki

  Biosphere Sciences, Hiroshima University

• EKI Ryoji

  Graduate School of Advanced Sciences of Matter, Hiroshima University

• Uematsu K

  Hiroshima Univ. Hiroshima Jpn

• Masui Yoshihiro

  Graduate School Of Advanced Sciences Of Matter Hiroshima University

• Eki Ryoji

  Graduate School Of Advanced Sciences Of Matter Hiroshima University

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