A monolithic integrated low-voltage deep brain stimulator with wireless power and data transmission

• Published in: Journal of semiconductors 2016-09, Vol.37 (9), p.96-99
• Main Author: 张章 谭烨 曾剑敏 韩旭 程心 解光军
• Format: Article
• Language: English
• Subjects: CMOS工艺; 低压供电; 功率; 单片集成; 数据传输; 无线; 电刺激器; 脑
• ISSN: 1674-4926
• DOI: 10.1088/1674-4926/37/9/095003

A monolithic integrated low-voltage deep brain stimulator with wireless power and data transmission is presented. Data and power are transmitted to the stimulator by mutual inductance coupling, while the in-vitro controller encodes the stimulation parameters. The stimulator integrates the digital control module and can generate the bipolar current with equal amplitude in four channels. In order to reduce power consumption, a novel controlled threshold voltage cancellation rectifier is proposed in this paper to provide the supply voltage of the stimulator. The monolithic stimulator was fabricated in a SMIC 0.18 μm 1-poly 6-metal mixed-signal CMOS process, occupying0.23 mm~2, and consumes 180 μW on average. Compared with previously published stimulators, this design has advantages of large stimulated current（0–0.8 m A） with the double low-voltage supply（1.8 and 3.3 V）, and highlevel integration.