一种用于便携式生物电位采集系统的60/spl mu/W 60 nV/Hz读出前端

2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers Pub Date : 2006-09-18 DOI:10.1109/ISSCC.2006.1696039

R. Yazicioglu, P. Merken, R. Puers, C. Hoof

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引用次数: 51

摘要

生物电位读出前端可以配置为提取EEG, ECG和EMG信号，并从3V提取20muA。斩波放大器的交流耦合导致输入参考噪声为60nV/radicHz，在1kHz时的CMRR为120dB。有源输入级提高了CMRR对电极偏置电压的抗扰性，在100Hz、电极偏置50mV时可实现110dB的CMRR

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A 60/spl mu/W 60 nV/Hz Readout Front-End for Portable Biopotential Acquisition Systems

A biopotential readout front-end can be configured to extract EEG, ECG, and EMG signals and draws 20muA from 3V. AC coupling of chopped amplifiers results in an input-referred noise of 60nV/radicHz and CMRR of 120dB at 1kHz. The immunity of the CMRR to electrode offset voltages is improved with an active input stage and 110dB CMRR is achieved at 100Hz with 50mV electrode offset

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2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers

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