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A 0.5-V sub-MuW/channel neural recording IC with delta-modulation-based spike detection

Title
A 0.5-V sub-MuW/channel neural recording IC with delta-modulation-based spike detection
Authors
Kim, S.-J.[Kim, Seong-Jin]Liu, L.[Liu, Lei]Yao, L.[Yao, Lei]Goh, W.L.[Goh, Wang Ling]Gao, Y.[Gao, Yuan]Je, M.[Je, Minkyu]
DGIST Authors
Je, M.[Je, Minkyu]
Issue Date
2015
Citation
2014 10th IEEE Asian Solid-State Circuits Conference, A-SSCC 2014, 189-192
Type
Conference
Article Type
Conference Paper
Abstract
A neural recording IC with a new spike detection scheme is proposed to minimize power dissipation while preserving the waveform information of the detected spikes. A delta modulator is employed in the recording IC to reduce signal dynamic range and enable low-voltage operation. A series of output values from the delta modulator are stored in a small amount of analog memory to extract two key features of the neural signal - amplitude and frequency, which are used for accurate spike detection. Using the stored delta values, the precise spike waveform information can be conserved. A prototype recording IC with 16 channels has been fabricated using 0.18-μm CMOS technology. Measurement results demonstrate the spike detection capability successfully. The fabricated IC consumes only 0.88 μW/channel at 0.5-V supply. © 2014 IEEE.
URI
http://hdl.handle.net/20.500.11750/3715
DOI
10.1109/ASSCC.2014.7008892
Publisher
Institute of Electrical and Electronics Engineers Inc.
Files:
There are no files associated with this item.
Collection:
Information and Communication EngineeringIMPACT Lab2. Conference Papers


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