Title :
Low-Power Low-Noise 8-Channel EEG Front-End ASIC for Ambulatory Acquisition Systems
Author :
Refet Firat Yazicioglu ; Merken, Patrick ; Puers, Robert ; Van Hoof, Chris
Author_Institution :
IMEC, Leuven
Abstract :
A small-size and very low-power portable electroencephalogram (EEG) acquisition system does not only improve the patients´ quality of life but also extend the device applications. This paper presents a 300muW 8-channel EEG readout front-end ASIC for the implementation of portable acquisition systems. Each channel of the ASIC consists of an AC coupled chopped instrumentation amplifier, a spike filter (SF) and a variable gain stage (VGA), and achieves 80 nV/radic(Hz) input referred noise density and 130 dB CMRR at 50 Hz, while consuming 8.5 muA from a single 3V supply. ASIC has been implemented in 0.5 mum CMOS technology, core area measures 3mm by 4mm, and is capable of operating more than 7 months from two AA batteries
Keywords :
CMOS integrated circuits; amplifiers; application specific integrated circuits; data acquisition; detector circuits; electroencephalography; portable instruments; readout electronics; 0.5 micron; 3 V; 3 mm; 300 muW; 4 mm; 7 months; 8.5 muA; ASIC; CMOS technology; EEG front-end; ambulatory acquisition systems; portable electroencephalogram; readout circuit; Application specific integrated circuits; Battery charge measurement; CMOS technology; Electrodes; Electroencephalography; Filters; Gain; Instruments; Power dissipation; Resistors;
Conference_Titel :
Solid-State Circuits Conference, 2006. ESSCIRC 2006. Proceedings of the 32nd European
Conference_Location :
Montreux
Print_ISBN :
1-4244-0303-0
DOI :
10.1109/ESSCIR.2006.307577
