Low-power signal processing devices for portable ECG detection.
An analog front end for diagnosing and monitoring the behavior of the heart is presented. This sensing front end has two low-power processing devices, including a 5(th)-order Butterworth operational transconductance-C (OTA-C) filter and an 8-bit successive approximation analog-to-digital converter (SAADC). The components fabricated in a 0.18-microm CMOS technology feature with power consumptions of 453 nW (filter) and 940 nW (ADC) at a supply voltage of 1 V, respectively. The system specifications in terms of output noise and linearity associated with the two integrated circuits are described in this paper.
Lee
Shuenn-Yuh
SY
Department of Electrical Engineering National Chung-Cheng University Chia-Yi, Taiwan.
Cheng
Chih-Jen
CJ
Wang
Cheng-Pin
CP
Kao
Wei-Chun
WC
D001698:Biomedical Engineering; D011211:Electric Power Supplies; D004562:Electrocardiography / Q000295:instrumentation* / Q000706:statistics & numerical data*; D004582:Electronics, Medical; D004867:Equipment Design; D006801:Humans; D012815:Signal Processing, Computer-Assisted