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JSSC 2020第7期Medical & Bio65nmNeural Interface

A Single-Chip Bidirectional Neural Interface With High-Voltage Stimulation and A

一款单芯片双向神经接口,支持高压刺激与神经信号记录,实现同步神经调控。
65nm LP工艺, 2.5/1.2V供电, 记录功耗205µW, 刺激功耗142µW, 最大输出功率24mW
神经接口高压刺激伪迹消除自适应滤波脑机接口
集成64通道时间复用记录前端
面积优化的四通道高压兼容刺激器
基于LMS的自适应滤波器实现60dB刺激伪迹抑制
Abstract
A single-chip, bidirectional brain–computer interface (BBCI) enables neuromodulation through simultaneous neural recording and stimulation. This article presents a prototype BBCI application-specified integrated circuit (ASIC) consisting of a 64-channel time-multiplexed recording front- end, an area-optimized four-channel high-voltage compliant stimulator, and electronics to support the concurrent multi- channel stimulus artifact cancellation. Stimulator power generation is integrated on a chip,