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

fYear

2009

Firstpage

83

Lastpage

86

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-G_m 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 Â¿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-G_m 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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/SOCDC.2009.5423877

Filename

5423877