TY - GEN
T1 - An area/power efficient electrode-matched neural-spike detector embedded in implantable 256-channel MEA
AU - Han, Myungjin
AU - Ha, Go Eun
AU - Cheong, Eunji
AU - Han, Gunhee
AU - Chae, Youngcheol
N1 - Publisher Copyright:
© 2017 IEEE.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/3/23
Y1 - 2018/3/23
N2 - A compact area/power efficient electrode-matched neural-spike detector (NSD) is proposed to provide an implantable multi-electrode array (MEA). A correlation scheme with only the input sampling capacitors makes an area reduction, and the recording of neural-spike events enables a power reduction, showing 0.0044 mm2 and 0.55 μW. Together with proposed NSD, an implantable 256-channel MEA is fabricated. The electrical measurement results show that the NSD achieves an input-referred noise of 10.1 μVrms with 1 kHz to 10 kHz bandwidth, providing NEF/PEF/AEF of 1.71/5.28/0.0044, respectively, and CMRR of 67.5 dB. It shows ×7.5/×1.6 area/power improvements, compared to previous state-of-the-art NSDs. The fabricated implantable MEA is demonstrated by cell-cultured and brain-sliced experiments.
AB - A compact area/power efficient electrode-matched neural-spike detector (NSD) is proposed to provide an implantable multi-electrode array (MEA). A correlation scheme with only the input sampling capacitors makes an area reduction, and the recording of neural-spike events enables a power reduction, showing 0.0044 mm2 and 0.55 μW. Together with proposed NSD, an implantable 256-channel MEA is fabricated. The electrical measurement results show that the NSD achieves an input-referred noise of 10.1 μVrms with 1 kHz to 10 kHz bandwidth, providing NEF/PEF/AEF of 1.71/5.28/0.0044, respectively, and CMRR of 67.5 dB. It shows ×7.5/×1.6 area/power improvements, compared to previous state-of-the-art NSDs. The fabricated implantable MEA is demonstrated by cell-cultured and brain-sliced experiments.
UR - http://www.scopus.com/inward/record.url?scp=85050032988&partnerID=8YFLogxK
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U2 - 10.1109/BIOCAS.2017.8325057
DO - 10.1109/BIOCAS.2017.8325057
M3 - Conference contribution
AN - SCOPUS:85050032988
T3 - 2017 IEEE Biomedical Circuits and Systems Conference, BioCAS 2017 - Proceedings
SP - 1
EP - 4
BT - 2017 IEEE Biomedical Circuits and Systems Conference, BioCAS 2017 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2017 IEEE Biomedical Circuits and Systems Conference, BioCAS 2017
Y2 - 19 October 2017 through 21 October 2017
ER -