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题名: Circuit design and simulation of a CMOS-based preamplifier for brain neural signals
作者: Sui XH;  Pei WH;  Gu M;  Liu JB;  Chen HD
出版日期: 2005
会议日期: MAY 26-28, 2005
摘要: A novel CMOS-based preamplifier for amplifying brain neural signal obtained by scalp electrodes in brain-computer interface (BCI) is presented in this paper. By means of constructing effective equivalent input circuit structure of the preamplifier, two capacitors of 5 pF are included to realize the DC suppression compared to conventional preamplifiers. Then this preamplifier is designed and simulated using the standard 0.6 mu m MOS process technology model parameters with a supply voltage of 5 volts. With differential input structures adopted, simulation results of the preamplifier show that the input impedance amounts to more than 2 Gohm with brain neural signal frequency of 0.5 Hz-100 Hz. The equivalent input noise voltage is 18 nV/Hz(1/2). The common mode rejection ratio (CMRR) of 112 dB and the open-loop differential gain of 90 dB are achieved.
会议名称: 1st International Conference on Neural Interface and Control (CNIC)
会议文集: 2005 First International Conference on Neural Interface and Control Proceedings
专题: 中国科学院半导体研究所(2009年前)_会议论文

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推荐引用方式:
Sui, XH; Pei, WH; Gu, M; Liu, JB; Chen, HD .Circuit design and simulation of a CMOS-based preamplifier for brain neural signals .见:IEEE .2005 First International Conference on Neural Interface and Control Proceedings,345 E 47TH ST, NEW YORK, NY 10017 USA ,2005,108-110
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