Title :
Integrated low-power 24-channel EEG front-end
Author :
Yazicioglu, R.F. ; Merken, P. ; Hoof, C. Van
Author_Institution :
IMEC, Leuven, Belgium
fDate :
4/14/2005 12:00:00 AM
Abstract :
The first integrated CMOS multichannel electroencephalogram (EEG) readout front-end, capable of extracting EEG signals from conventional AgCl electrodes without the use of any trimmed components, is presented. Each channel of the ASIC achieves better than 90 dB common-mode rejection ratio (CMRR) at 50 Hz with 50 mV DC offset between EEG electrodes. This is consistent with the presented formula describing the CMRR behaviour of the preamplifier under DC electrode offset. The front-end includes 24 channels and consumes 10.5 mW from a 3 V supply.
Keywords :
CMOS integrated circuits; application specific integrated circuits; biomedical electrodes; biomedical electronics; electroencephalography; low-power electronics; medical signal processing; readout electronics; silver compounds; 10.5 mW; 24-channel EEG front-end; 3 V; 50 Hz; 50 mV; ASIC channel; DC electrode offset; EEG electrodes; EEG readout front-end; EEG signals; common-mode rejection ratio; conventional AgCl electrodes; integrated CMOS multi-channel electroencephalogram; integrated low-power EEG front-end;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20050159
