[D-1] Micro/Nano Technologies for Biosensing and Interfaces

[D-1-02] Distributed CMOS chip for retinal prosthesis
with high-rate stimulation

〇Yuki - Nakanishi¹, Kiyotaka - Sasagawa¹, Ronnakorn - Siwadamrongpong¹, Kenzo - Shodo², Yasuo - Terasawa², Hironari - Takehara¹, Makito - Haruta¹, Hiroyuki - Tashiro^1,3, Jun - Ohta¹ (1. Nara Inst. of Sci. and Tech. (Japan), 2. Nidek Co. LTD (Japan), 3. Kyushu Univ. (Japan))

Presentation style: On-site (in-person)

https://doi.org/10.7567/SSDM.2022.D-1-02

In this study, we propose a CMOS chip for retinal prosthesis for high-rate stimulation. With an optimized control circuit, the current values of stimulation electrodes were set by only 36 clocks per electrode. We demonstrated operation at a frequency of 2.3 MHz on the prototype chip and a setup time of 17 μs for each electrode.