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http://dx.doi.org/10.6109/jkiice.2016.20.7.1303

Design of 0.5V Electro-cardiography  

Sung, Min-Hyuk (Silicon Works)
Kim, Jea-Duck (HiDeep)
Choi, Seong-Yeol (Department of Semiconductor Engineering, Chungbuk National University)
Kim, Yeong-Seuk (Department of Semiconductor Engineering, Chungbuk National University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.20, no.7, 2016 , pp. 1303-1310 More about this Journal
Abstract
In this paper, electrocardiogram (ECG) analog front end with supply voltage of 0.5V has been designed and verified by measurements of fabricated chip. ECG is composed of instrument amplifier, 6th order gm-C low pass filter and variable gain amplifier. The instrument amplifier is designed to have gain of 34.8dB and the 6th order gm-C low pass filter is designed to obtain the cutoff frequency of 400Hz. The operational transconductance amplifier of the low pass filter utilizes body-driven differential input stage for low voltage operation. The variable gain amplifier is designed to have gain of 6.1~26.4dB. The electrocardiogram analog front end are fabricated in TSMC $0.18{\mu}m$ CMOS process with chip size of $858{\mu}m{\times}580{\mu}m$. Measurements of the fabricated chip is done not to saturate the gain of ECG by changing the external resistor and measured gain of 28.7dB and cutoff frequency of 0.5 - 630Hz are obtained using the supply voltage of 0.5V.
Keywords
ECG Electro-cardiography; ECG; Instrumentation Amplifier; gm-C filter; Variable gain amplifier;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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