@article{liu_vichienchom_clements_demarco_hughes_mcgucken_humayun_juan_weiland_greenberg_2000, title={A neuro-stimulus chip with telemetry unit for retinal prosthetic device}, volume={35}, ISSN={["1558-173X"]}, DOI={10.1109/4.871327}, abstractNote={In this retinal prosthesis project, a rehabilitative device is designed to replace the functionality of defective photoreceptors in patients suffering from retinitis pigmentosa (RP) and age-related macular degeneration (AMD). The device consists of an extraocular and an intraocular unit. The implantable component receives power and a data signal via a telemetric inductive link between the two units. The extraocular unit includes a video camera and video processing board, a telemetry protocol encoder chip, and an RF amplifier and primary coil. The intraocular unit consists of a secondary coil, a rectifier and regulator, a retinal chip with a telemetry protocol decoder, a stimulus signal generator, and an electrode array. This paper focuses on the design, fabrication, and testing of a microchip which serves as the telemetry protocol decoder and stimulus signal generator. It is fabricated by MOSIS with 1.2-mm CMOS technology and was demonstrated to provide the desired biphasic current stimulus pulses for an array of 100 retinal electrodes at video frame rates.}, number={10}, journal={IEEE JOURNAL OF SOLID-STATE CIRCUITS}, author={Liu, WT and Vichienchom, K and Clements, M and DeMarco, SC and Hughes, C and McGucken, E and Humayun, MS and Juan, E and Weiland, JD and Greenberg, R}, year={2000}, month={Oct}, pages={1487–1497} }