Title :
A low power analog front-end for portable biopotential acquisition systems
Author :
Wenhui Qin ; Keren Ke ; Yanchao Wang ; Yajie Qin ; Ting Yi ; Zhiliang Hong
Author_Institution :
State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai, China
Abstract :
An ultra-low power analog front end is presented to capture ExG (including ECG, EEG and EMG) signals. It consists of a capacitively coupled chopper instrument amplifier, a chopping spike filter and a VGA. Implemented in standard 0.35μm CMOS technology, this analog front end occupying 0.54 mm2 chip area, while consuming only 3.96μA from 3.3 V supply. Measurement results show an input-referred noise of 0.85 μVrms (0.5-100 Hz), 115dB CMRR, 100dB PSRR, and a noise efficiency factor of 6.48.
Keywords :
CMOS analogue integrated circuits; biomedical electronics; electrocardiography; electroencephalography; electromyography; low-power electronics; power amplifiers; CMRR; ECG; EEG; EMG; ExG capture; PSRR; VGA; capacitively coupled chopper instrument amplifier; chip area; chopping spike filter; current 3.96 muA; frequency 0.5 Hz to 100 Hz; input-referred noise; noise efficiency factor; portable biopotential acquisition systems; size 0.35 mum; standard CMOS technology; ultralow power analog front end; voltage 3.3 V; Abstracts; Clocks; Electrocardiography; Electroencephalography; Frequency measurement; Rails;
Conference_Titel :
Solid-State and Integrated Circuit Technology (ICSICT), 2014 12th IEEE International Conference on
Conference_Location :
Guilin
Print_ISBN :
978-1-4799-3296-2
DOI :
10.1109/ICSICT.2014.7021411
