doi: 10.1109/IEMBS.2007.4353533.
A low-voltage low-power front-end for wearable EEG systems
Affiliations
- PMID: 18003199
- DOI: 10.1109/IEMBS.2007.4353533
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A low-voltage low-power front-end for wearable EEG systems
Annu Int Conf IEEE Eng Med Biol Soc.
2007.
Abstract
A low-voltage and low-power front-end for miniaturized, wearable EEG systems is presented. The instrumentation amplifier, which removes the electrode drift and conditions the signal for a 10-bit A/D converter, combines a chopping strategy with quasi-FGMOS (QFG) transistors to minimize low frequency noise whilst enabling operation at 1 V supply. QFG devices are also key to the A/D converter operating at 1.2 V with 70dB of SNR and an oversampling ratio of 64. The whole system consumes less than 2uW at 1.2V.