Title :
A high performance current-balancing instrumentation amplifier for ECG monitoring systems
Author :
Hsu, Chia-Hao ; Huang, Chi-Chun ; Kian Siong ; Hsiao, Wei-Chih ; Wang, Chua-Chin
Abstract :
A high command-mode rejection ratio (CMRR) and low input referred noise instrumentation amplifier (IA) is presented for ECG applications. A high pass filter (HPF) with a small-Gm OTA using a current division technique is employed to attain small transconductance, which needs only a small capacitor in the HPF such that the integration on silicon is highly feasible. The proposed design is carried out by TSMC (Taiwan Semiconductor Manufacturing Company) standard 0.18 ¿m CMOS technology. CMRR is found to be 127 dB and input referred noise is merely 0.278 according to the simulation results.
Keywords :
CMOS analogue integrated circuits; biomedical electronics; capacitors; electrocardiography; high-pass filters; instrumentation amplifiers; low noise amplifiers; patient monitoring; CMOS technology; ECG monitoring systems; HPF; capacitor; command-mode rejection ratio; current division technique; current-balancing instrumentation amplifier; high pass filter; input referred noise instrumentation amplifier; size 0.18 mum; small-Gm OTA; transconductance; CMOS technology; Capacitors; Electrocardiography; Filters; Instruments; Low-noise amplifiers; Monitoring; Semiconductor device noise; Signal to noise ratio; Transconductance; CMRR; ECG; high pass filter; instrumentation amplifier;
Conference_Titel :
SoC Design Conference (ISOCC), 2009 International
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5034-3
Electronic_ISBN :
978-1-4244-5035-0
DOI :
10.1109/SOCDC.2009.5423877
