A 0.45NW, 0.5V, 59-DB DR, GM-C LOW-PASS FILTER FOR PORTABLE ECG RECORDING

Chutham Sawigun, Senad Hiseni, Wouter A. Serdijn

2012

Abstract

This paper presents the design of a sub-threshold CMOS Gm-C low-pass filter in a portable ECG detection system. The proposed filter is formed by cascading 6 stages of identical 1st-order low-pass sections. With a minimum number of active components in the 1st-order section, the noise contribution of the circuit can be kept low while minimizing the size of transistors and capacitors. The filter cut-off frequency is designed to be adjustable over the range from 100Hz to 250Hz by changing the bias current. Circuit simulations, using AMS’ 0.18µm CMOS technology and operating from a 0.5V supply voltage, show that, for a cut-off frequency of 150Hz, the filter draws 0.9nA of current. An input referred noise of 88µVrms is obtained while for 1% total harmonic distortion, the voltage swing can be as high as 0.23Vpp.

References

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Paper Citation


in Harvard Style

Sawigun C., Hiseni S. and A. Serdijn W. (2012). A 0.45NW, 0.5V, 59-DB DR, GM-C LOW-PASS FILTER FOR PORTABLE ECG RECORDING . In Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2012) ISBN 978-989-8425-91-1, pages 324-328. DOI: 10.5220/0003764103240328


in Bibtex Style

@conference{biodevices12,
author={Chutham Sawigun and Senad Hiseni and Wouter A. Serdijn},
title={A 0.45NW, 0.5V, 59-DB DR, GM-C LOW-PASS FILTER FOR PORTABLE ECG RECORDING},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2012)},
year={2012},
pages={324-328},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003764103240328},
isbn={978-989-8425-91-1},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2012)
TI - A 0.45NW, 0.5V, 59-DB DR, GM-C LOW-PASS FILTER FOR PORTABLE ECG RECORDING
SN - 978-989-8425-91-1
AU - Sawigun C.
AU - Hiseni S.
AU - A. Serdijn W.
PY - 2012
SP - 324
EP - 328
DO - 10.5220/0003764103240328