A Low-Offset and Low-Power CMOS Front-End Circuit for Physiological Signal Acquisition
(0) There is a growing demand of high-precision and lowpower ICs for physiological signal acquisitions. One of the crucial functional blocks for such ICs is the analogue front-end circuit. In this paper we presented a compact analogue front-end circuit with adjustable gains that is elaborated for various physiological signal acquisitions. The circuit we have developed consists of a gain programmable instrumentation amplifier (GPIA), a current-to-voltage converter (I-V converter) and a high-precision reference. The circuit was designed using the SMIC 0.18μm mixed-signal CMOS 1P6M process technology, with a silicon area of 356μm×105μm. Back-end simulation results suggested that the circuit achieved a common-mode-rejection-ration (CMRR) of 142 dB, the adjustable gain from 31.6dB to 76.5 dB, and the offset voltage less than 80μV. The power consumption of the GPIA was approximately 113.4μW under a 1.8V power supply.
Biomedical circuits and systems low-offset and lowpower circuit design instrumentation amplifier
J.Y.Zhang L.Wang B.S.Liu L.K.Chen Y.T.Zhang B.Li
Institute of Biomedical and Health Engineering (IBHE) Shenzhen Institutes of Advanced Technology (SI Institute of Biomedical and Health Engineering (IBHE) Shenzhen Institutes of Advanced Technology (SI School of Electronic and Information Engineering South China University of Technology Guangzhou,P.R.
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）