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

fYear

2014

fDate

28-31 Oct. 2014

Firstpage

1

Lastpage

3

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICSICT.2014.7021411

Filename

7021411