A CMOS IC for portable EEG acquisition systems

Author

Martins, Rui ; Selberherr, Siegfried ; Vaz, Francisco A.

Author_Institution

Inst. for Microelectron., Tech. Univ. Wien, Austria

Volume

47

Issue

5

fYear

1998

fDate

10/1/1998 12:00:00 AM

Firstpage

1191

Lastpage

1196

Abstract

We present a monolithic low-power, low-noise analog front-end electroencephalogram acquisition system. It draws only 500 μA from a standard 9-V battery, making it suitable for use in portable systems. Although fabricated in a standard CMOS technology, by using current feedback techniques it achieves a common mode rejection ratio of 100 dB while the total input noise referred to input is kept below 1.5 μV (rms)

Keywords

CMOS analogue integrated circuits; biomedical electronics; electroencephalography; feedback amplifiers; instrumentation amplifiers; integrated circuit design; integrated circuit noise; low-power electronics; 500 muA; CMOS IC; common mode rejection ratio; current feedback techniques; electroencephalogram; frequency response; instrumentation amplifier; monolithic low-power low-noise analog front-end EEG acquisition system; portable EEG acquisition systems; total input noise; Batteries; CMOS integrated circuits; CMOS technology; Differential amplifiers; Electroencephalography; Feedback; High power amplifiers; Instruments; Operational amplifiers; Resistors;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.746581

Filename

746581