⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文设计了一款集成1024通道的高顺应电压SoC用于视网膜假体，旨在解决电极尺寸减小导致的高阻抗和需要大量通道以支持面部识别和阅读的挑战。芯片面积仅37.6mm2，适合植入式应用。
Retinal implants elicit light perception for people blinded by photoreceptor loss. Commercialized 60-channel retinal prostheses allow patients to perform simple tasks, but several hundreds to a thousand electrodes are required for face recognition/reading [1,2], posing great challenges for the design of next-generation retinal stimulators. Aside from the higher power/data demand, the electrode impedance is also increased. Placing 1000 epiretinal electrodes in the 5mmdiameter macula region reduces the electrode size to less than 0.01mm2, leading to a 30kΩ electrode-tissue impedance [2]. To elicit light perception of various brightness levels, the stimulators for epiretinal prostheses require an output compliance voltage of ±10V [3], thus requiring area-consuming high-voltage (HV) transistors. The stimulator in [4] achieves 1600 channels, but it is designed for subretinal rather than epiretinal prostheses. It has ±2V compliance and needs
Kuanfu Chen, Yi-Kai Lo, Wentai Liu
University of California, Los Angeles, CA