標題: | A Novel Pseudo Resistor Structure for Biomedical Front-end Amplifiers |
作者: | Huang, Yu-Chieh Yang, Tzu-Sen Hsu, Shun-Hsi Chen, Xin-Zhuang Chiou, Jin-Chern 電子工程學系及電子研究所 電控工程研究所 Department of Electronics Engineering and Institute of Electronics Institute of Electrical and Control Engineering |
公開日期: | 2015 |
摘要: | This study proposes a novel pseudo resistor structure with a tunable DC bias voltage for biomedical front-end amplifiers (FEAs). In the proposed FEA, the high-pass filter composed of differential difference amplifier and a pseudo resistor is implemented. The FEA is manufactured by using a standard TSMC 0.35 mu m CMOS process. In this study, three types FEAs included three different pseudo resistor are simulated, fabricated and measured for comparison and electrocorticography (ECoG) measurement, and all the results show the proposed pseudo resistor is superior to other two types in bandwidth. In chip implementation, the lower and upper cutoff frequencies of the high-pass filter with the proposed pseudo resistor are 0.15 Hz and 4.98 KHz, respectively. It also demonstrates lower total harmonic distortion performance of -58 dB at 1 kHz and higher stability with wide supply range (1.8 V and 3.3 V) and control voltage range (0.9 V and 1.65 V) than others. Moreover, the FEA with the proposed pseudo successfully recorded spike-and-wave discharges of ECoG signal in in vivo experiment on rat with pentylenetetrazol-induced seizures. |
URI: | http://hdl.handle.net/11536/136528 |
ISBN: | 978-1-4244-9270-1 |
ISSN: | 1557-170X |
期刊: | 2015 37TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC) |
起始頁: | 2713 |
結束頁: | 2716 |
顯示於類別: | 會議論文 |