A 0.8-V 82.9-mu W In-Ear BCI Controller IC With 8.8 PEF EEG Instrumentation Amplifier and Wireless BAN Transceiver

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In-ear brain-computer interface (BCI) controller system is implemented with a dedicated system-on-chip (SoC) including electroencephalography (EEG) readout and body channel communication (BCC) transceiver (TRX). The 8-mm(2) chip is fabricated using 65-nm CMOS and contains three key features: 1) current reusing low-noise amplifier (CRLNA) for low power; 2) bootstrapping dc servo loop (BDSL) enabling low-noise measurement even on 350-mV electrode dc offset (EDO); and 3) dual-mode programmable gain amplifier (DMPGA) that reduces TRX power consumption by activating only when the intentional blink is present. EEG instrumentation amplifier (IA) shows the state-of-the-art 8.8 power efficiency factor (PEF) performance, and the entire integrated circuit (IC) consumes 82.9 mu W. From the measurement, with nine subjects, the proposed BCI system accomplished 84% average accuracy for the binary selection task.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2019-04
Language
English
Article Type
Article; Proceedings Paper
Citation

IEEE JOURNAL OF SOLID-STATE CIRCUITS, v.54, no.4, pp.1185 - 1195

ISSN
0018-9200
DOI
10.1109/JSSC.2018.2888845
URI
http://hdl.handle.net/10203/261002
Appears in Collection
EE-Journal Papers(저널논문)
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