Low-Power Instrumental Amplifier for Portable ECG

Author

Wang, Wei-Song ; Wu, Zhao-Cheng ; Huang, Hong-Yi ; Luo, Ching-Hsing

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan

fYear

2009

fDate

28-29 April 2009

Firstpage

1

Lastpage

4

Abstract

A CMOS analog front-end (AFE) circuit for portable biomedical signals acquisition system is presented in this paper. A low-power instrumentation amplifier (IA) is chosen as an AFE circuit for portable biomedical application using simplified differential difference amplifier (DDA). The presented IA is designed in standard 0.18 mum 1P6M CMOS process technology at a 1.8-V supply voltage. The simulation results have shown that the presented IA, with a core area of 0.13 mm², achieves a common-mode rejection ratio of 150 dB at 10 Hz, power supply rejection ratio of 62 dB at 10 Hz and power consumption of 3.99 muW. The input referred noise is 5 muV/radic(Hz) at 1 Hz.

Keywords

CMOS integrated circuits; differential amplifiers; electrocardiography; instrumentation amplifiers; operational amplifiers; signal processing equipment; 1P6M CMOS process technology; CMOS analog front end circuit; differential difference amplifier; instrumental amplifier; portable ECG; portable biomedical signals acquisition system; power 3.99 muW; size 0.18 mum; voltage 1.8 V; CMOS analog integrated circuits; CMOS process; CMOS technology; Circuit simulation; Differential amplifiers; Electrocardiography; Energy consumption; Instruments; Power supplies; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Testing and Diagnosis, 2009. ICTD 2009. IEEE Circuits and Systems International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-2587-7

Type

conf

DOI

10.1109/CAS-ICTD.2009.4960836

Filename

4960836