K.Ozols, M.Greitans, R.Shavelis. “EEG Data Acquisition System Based on Asynchronous Sigma-Delta Modulator”, The 13th Biennial Baltic Electronics Conference BEC2012, Tallinn, Estonia, Oct. 3-5, 2012.
This paper describes a multichannel mobile EEG data acquisition system that consists of on-head sensors with built in electroencephalogram (EEG) signal amplifier, asynchronous sigma-delta modulator (ASDM) for analog to digital conversion and 434MHz On-Off keying (OOK )wire-less data transmitter. A prototype circuit has been designed and fabricated in a 11x16mm cylinder package. After receiv-ing the signal, appropriate processing is applied in order to reconstruct the brain wave signals