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A distributed current stimulator ASIC for high density neural stimulation

Title
A distributed current stimulator ASIC for high density neural stimulation
Authors
Park J.H.Kim C.Ahn S.-H.Gwon T.M.Jeong J.Beom Jun S.Kim S.J.
Ewha Authors
전상범
SCOPUS Author ID
전상범scopus
Issue Date
2016
Journal Title
Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
ISSN
1557-170XJCR Link
Citation
vol. 2016-October, pp. 1770 - 1773
Publisher
Institute of Electrical and Electronics Engineers Inc.
Indexed
SCOPUS scopus
Abstract
This paper presents a novel distributed neural stimulator scheme. Instead of a single stimulator ASIC in the package, multiple ASICs are embedded at each electrode site for stimulation with a high density electrode array. This distributed architecture enables the simplification of wiring between electrodes and stimulator ASIC that otherwise could become too complex as the number of electrode increases. The individual ASIC chip is designed to have a shared data bus that independently controls multiple stimulating channels. Therefore, the number of metal lines is determined by the distributed ASICs, not by the channel number. The function of current steering is also implemented within each ASIC in order to increase the effective number of channels via pseudo channel stimulation. Therefore, the chip area can be used more efficiently. The designed chip was fabricated with area of 0.3 mm2 using 0.18 μm BCDMOS process, and the bench-top test was also conducted to validate chip performance. © 2016 IEEE.
DOI
10.1109/EMBC.2016.7591060
ISBN
9781457702204
Appears in Collections:
엘텍공과대학 > 전자공학과 > Journal papers
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