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Design considerations for low-power ADC for retinal prosthesis applications

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5 Author(s)
Koushaeian, L. ; Dept. of Electr. Eng., Univ. Of Melbourne, Melbourne, VIC, Australia ; Ghafari, B. ; Goodarzy, F. ; Evans, R.
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Retinal prostheses have great potential in helping restore vision in patients suffering age-related macular degeneration and retinitis pigmentosa. Power consumption is a major problem for implanted devices. Biomedical implant researchers are investigating suitable low-power architectures for future implant systems. For this reason, the design of ultra-low power interfaces, especially analog-to-digital converters is very important. A successive approximation analog-to-digital converter (ADC) has a simple and flexible architecture that makes it well-suited for systems utilizing wireless power transfer and operation below 1 Volt. This paper reviews power-efficient ADC techniques suitable for biomedical implant devices.

Published in:

Broadband and Biomedical Communications (IB2Com), 2011 6th International Conference on

Date of Conference:

21-24 Nov. 2011