지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.14 No.5
- 발행연도
- 2014.10
- 수록면
- 658 - 665 (8page)
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초록· 키워드
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The neural stimulators have been employed to the visual prostheses system based on the functional electrical stimulation (FES). Due to the size limitation of the implantable device, the smaller area of the unit current driver pixel is highly desired for higher resolution current stimulation system. This paper presents a 16-channel compact current-mode neural stimulator IC with digital to analog converter (DAC) sharing scheme for artificial retinal prostheses. The individual pixel circuits in the stimulator IC share a single 6 bit DAC using the sample-and-hold scheme. The DAC sharing scheme enables the simultaneous stimulation on multiple active pixels with a single DAC while maintaining small size and low power. The layout size of the stimulator circuit with the DAC sharing scheme is reduced to be 51.98 %, compared to the conventional scheme. The stimulator IC is designed using standard 0.18 μm 1P6M process. The chip size except the I/O cells is 437 μm × 501 μm.
목차
Abstract
I. INTRODUCTION
II. CIRCUIT DESCRIPTION
III. DISCUSSIONS
IV. MEASUREMENT RESULT
V. CONCLUSIONS
REFERENCES
참고문헌 (12)
참고문헌 신청
1. [학술지(정기간행물)] - M. Ortmanns / 2007 / A 232-Channel Epiretinal Stimulator ASIC / Solid-State Circuits, IEEE Journal of 42 (12) : 2946 ~ 2959
2. [학술지(정기간행물)] - W. Liu / 2000 / A Neuro-Stimulus Chip with Telemetry Unit for Retinal Prosthetic Device / IEEE journal of Solid-State Circuits 35 (10) : 1487 ~ 1497
3. [학술지(정기간행물)] - K. Mathieson / 2012 / Photovoltaic retinal prosthesis with high pixel density / Nature Photonics 6 : 391 ~ 397
4. [학술지(정기간행물)] - E. Funatsu / 1997 / An Artificial Retina Chip with Current-Mode Focal Plane Image Processing Functions / Electron Devices, IEEE Transactions on 44 (10) : 1777 ~ 1782
5. [학술지(정기간행물)] - K. Chen / 2010 / An Integrated 256-Channel Epiretinal Prosthesis / Solid-State Circuits, IEEE Journal of 45 (9) : 1946 ~ 1956
2. [학술지(정기간행물)] - W. Liu / 2000 / A Neuro-Stimulus Chip with Telemetry Unit for Retinal Prosthetic Device / IEEE journal of Solid-State Circuits 35 (10) : 1487 ~ 1497
3. [학술지(정기간행물)] - K. Mathieson / 2012 / Photovoltaic retinal prosthesis with high pixel density / Nature Photonics 6 : 391 ~ 397
4. [학술지(정기간행물)] - E. Funatsu / 1997 / An Artificial Retina Chip with Current-Mode Focal Plane Image Processing Functions / Electron Devices, IEEE Transactions on 44 (10) : 1777 ~ 1782
5. [학술지(정기간행물)] - K. Chen / 2010 / An Integrated 256-Channel Epiretinal Prosthesis / Solid-State Circuits, IEEE Journal of 45 (9) : 1946 ~ 1956
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UCI(KEPA) : I410-ECN-0101-2015-560-002808393