Microelectronic retinal prosthesis: II. Use of high-voltage CMOS in retinal neurostimulators

N. Dommel, Y. T. Wong, T. Lehmann, P. Byrnes-Preston, N. H. Lovell, G. J. Suaning

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

11 Citations (Scopus)

Abstract

This paper presents the design, implementation, and simulated and measured results of a complementary metal-oxide-semiconductor neurostimulator implemented in a 0.35 μm high-voltage process. To allow for a high stimulation voltage, and hence the greatest versatility of the neurostimulator in situ, a high-voltage CMOS process was used. The neurostimulator utilized current sources and sinks to simultaneously deliver and recover charge. It has the ability to deliver stimulus in three output current ranges using a current sink only, current source only, or both a current source and sink combined to provide focused stimulation. The worst case integral non-linearity and differential non-linearity errors were 0.2 LSB and 0.1 LSB respectively, and the current source and sink turn-on times were under 500 ns, providing fast switching time in response to stimuli instructions. The total die area was under 13 mm 2, well within the area constraints of our implantable vision prosthesis device.

Original languageEnglish
Title of host publication28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'06
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages4651-4654
Number of pages4
ISBN (Print)1424400325, 9781424400324
DOIs
Publication statusPublished - 1 Dec 2006
Externally publishedYes
EventInternational Conference of the IEEE Engineering in Medicine and Biology Society 2006 - Marriott Hotel, New York, United States of America
Duration: 31 Aug 20063 Sep 2006
Conference number: 28th
https://ieeexplore.ieee.org/xpl/conhome/4028925/proceeding?isnumber=4461641 (Proceedings)

Publication series

NameAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
ISSN (Print)0589-1019

Conference

ConferenceInternational Conference of the IEEE Engineering in Medicine and Biology Society 2006
Abbreviated titleEMBC 2006
CountryUnited States of America
CityNew York
Period31/08/063/09/06
Internet address

Keywords

  • Digital-to-analog converter (DAC)
  • High-voltage CMOS
  • Parallel neural stimulation
  • Vision prosthesis

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