Browsing by Author "Chung, Jung-Chen"

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An 8-Channel Power-Efficient Time-Constant-Enhanced Analog Front-End Amplifier for Neural Signal Acquisition
(2015)
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
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.