title: A low-voltage low-power front-end for wearable EEG systems.
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.
authors.affiliation: Dept. of Electrical and Electronic Engineering, Imperial College, London, UK. d.yates@imperial.ac.uk
authors.forename: D
authors.initials: D
authors.lastname: Yates
authors.forename: E
authors.initials: E
authors.lastname: López-Morillo
authors.forename: R G
authors.initials: RG
authors.lastname: Carvajal
authors.forename: J
authors.initials: J
authors.lastname: Ramirez-Angulo
authors.forename: E
authors.initials: E
authors.lastname: Rodriguez-Villegas
mesh_terms: D000669:Amplifiers, Electronic; D000703:Analog-Digital Conversion; D003936:Diagnosis, Computer-Assisted / Q000295:instrumentation* / Q000379:methods; D011211:Electric Power Supplies; D015716:Electrocardiography, Ambulatory / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*