Title :
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
fDate :
10/1/1998 12:00:00 AM
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;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
