標題: An 8-Channel Power-Efficient Time-Constant-Enhanced Analog Front-End Amplifier for Neural Signal Acquisition
作者: Chung, Jung-Chen
Chen, Wei-Ming
Wu, Chung-Yu
電子工程學系及電子研究所
生醫電子轉譯研究中心
Department of Electronics Engineering and Institute of Electronics
Biomedical Electronics Translational Research Center
關鍵字: analog front-end;low noise;low power;time constant enhance
公開日期: 2015
摘要: In this paper, an 8-channel low-power analog front-end amplifier (AFEA) with time-constant-enhanced topology is proposed for neural signal acquisition. The AFEA is composed of eight time-constant-enhanced amplifiers (TCEAs) and high-pass filters (HPFs), a multiplexed transconductor (MGM) and a transimpedance amplifier (TIA). The AFEA is designed and simulated in 65nm CMOS technology. The bandwidth of the AFEA is 7 kHz, and the maximum gain is 61.2 dB with power consumption of 1.77 mu W per channel. The TCEA is designed to reduce the high-pass cut-off frequency to 0.16 Hz and achieve a high gain of 50.7 dB with only 4 pF input capacitance. The power consumption of TCEA is 1.08 mu W under 1-V power supply. The noise efficiency factor (NEF) of the TCEA is 2.13 with 4.46 mu V-rms input-referred noise.
URI: http://hdl.handle.net/11536/134701
ISBN: 978-1-4799-8391-9
ISSN: 0271-4302
期刊: 2015 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS)
起始頁: 1234
結束頁: 1237
Appears in Collections:Conferences Paper