Low noise multichannel amplifier for portable EEG biomedical applications

Author

Badillo, L. ; Ponomaryov, V. ; Ramos, E. ; Igartua, L.

Author_Institution

Nat. Polytech. Inst. of Mexico, Mexico City, Mexico

Volume

4

fYear

2003

fDate

17-21 Sept. 2003

Firstpage

3309

Abstract

An low noise EEG biopotential multichannel amplifier is presented. The amplifier is designed by use of integrated circuits such as the instrumentation amplifier AD620, very low offset voltage OP77, switched capacitor low pass filter Max 281, etc. The amplifier is applied in multichannel medical equipment together with a microprocessor and PCMCIA memory, in a portable battery operated system. The portable system can be used in the diagnosis and localization of pathology brain events. Such the applications require the long term recording analysis of stored EEG signals.

Keywords

biomedical equipment; diseases; electroencephalography; instrumentation amplifiers; low-pass filters; memory cards; microprocessor chips; switched capacitor filters; EEG; PCMCIA memory; biopotential amplifier; biopotential multichannel amplifier; instrumentation amplifier AD620; integrated circuits; long term recording analysis; microprocessor; multichannel medical equipment; offset voltage; pathology brain event; portable system; switched capacitor low pass filter Max 281; Biomedical equipment; Electroencephalography; Instruments; Integrated circuit noise; Low pass filters; Low voltage; Low-noise amplifiers; Microprocessors; Switched capacitor circuits; Switching circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2003. Proceedings of the 25th Annual International Conference of the IEEE

ISSN

1094-687X

Print_ISBN

0-7803-7789-3

Type

conf

DOI

10.1109/IEMBS.2003.1280852

Filename

1280852