Title :
Design of Low-Power Low-Voltage Biomedical Amplifier for Electrocardiogram Signal Recording
Author :
Lim, Edwin Cheng Mu ; Zou, Xiaodan ; Zheng, Yuanjin ; Tan, Jun
Author_Institution :
Nat. Univ. of Singapore, Singapore
Abstract :
The demand for health-monitoring products is increasing worldwide. Low-power and low-voltage attributes are important concerns that need to be addressed in circuits used for personal health-monitoring applications, to achieve a long battery life. In this paper, a biomedical amplifier is designed for electrocardiogram (ECG) signal detection. The design comprises of a high pass filter (HPF), an operational transconductance amplifier (OTA), two dB-linear variable gain amplifiers, three low pass filters (LPF), and an operational transresistance amplifier (ORA). In particular, the VGA and the LPF uses the log companding technique. The bio-amplifier consumes less than 20 muW of power from a 1 V single supply. The circuit is implemented in 0.18 mum CMOS technology.
Keywords :
CMOS integrated circuits; amplifiers; biomedical electronics; electrocardiography; high-pass filters; integrated circuit design; low-power electronics; medical signal processing; patient monitoring; CMOS technology; ECG; battery life; bioamplifier; dB-linear variable gain amplifiers; electrocardiogram signal recording; health-monitoring products; high pass filter; log companding technique; low pass filters; low-power low-voltage biomedical amplifier design; operational transconductance amplifier; operational transresistance amplifier; voltage 1 V; Batteries; CMOS technology; Circuits; Electrocardiography; Gain; Low pass filters; Operational amplifiers; Signal design; Signal detection; Transconductance; HPF; LPF; ORA; OTA; VGA; low-power; low-voltage;
Conference_Titel :
Biomedical Circuits and Systems Conference, 2007. BIOCAS 2007. IEEE
Conference_Location :
Montreal, Que.
Print_ISBN :
978-1-4244-1524-3
Electronic_ISBN :
978-1-4244-1525-0
DOI :
10.1109/BIOCAS.2007.4463341
