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首页> 外文会议>Engineering in Medicine and Biology Society, 2004. IEMBS '04. 26th Annual International Conference of the IEEE >A multichannel monolithic wireless microstimulator
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A multichannel monolithic wireless microstimulator

机译：多通道单片无线微刺激器

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摘要

A 64-site wireless current microstimulator chip (Interestim-2B) and a prototype implant based on this chip have been developed for neural prosthesis applications. Modular stand-alone architecture allows up to 32 such chips to be connected in parallel to drive 2048 sites. The only off-chip components are a receiver inductive-capacitive (LC) tank and microelectrode arrays such as silicon probes for intracortical stimulation. The implant receives inductive power and data at 2.5 Mb/sec from a frequency shift keyed carrier to generate up to 65800 stimulus pulses/sec. Each chip contains 16 current drivers with 270 μA full-scale current, 5-bit resolution, 100 MΩ output impedance, and a dynamic range that extends within 150 mV of the 5 V supply rail. The chip and implant (without probes) measure 4.6×4.6×0.5 and 19×14×6 (mm), respectively.
机译：已经开发出一种用于神经假体的64位无线电流微刺激器芯片（Interestim-2B）和基于该芯片的原型植入物。模块化独立架构允许多达32个此类芯片并行连接，以驱动2048个站点。唯一的芯片外组件是接收器电感电容（LC）储罐和微电极阵列，例如用于皮层内刺激的硅探针。植入物从频移键控载波以2.5 Mb / sec的速度接收感应功率和数据，以产生高达65800刺激/秒的脉冲。每个芯片包含16个电流驱动器，这些电流驱动器具有270μA的满量程电流，5位分辨率，100MΩ的输出阻抗以及在5V电源轨的150mV范围内扩展的动态范围。芯片和植入物（不带探针）的尺寸分别为4.6×4.6×0.5和19×14×6（mm）。

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