A Charge Balanced Neural Stimulator with 3.3 V to 49 V Supply Compliance and Arbitrary Programmable Current Pulse Shapes
A Charge Balanced Neural Stimulator with 3.3 V to 49 V Supply Compliance and Arbitrary Programmable Current Pulse Shapes
复制标题
具有 3.3V 至 49V 电源合规性和任意可编程电流脉冲形状的电荷平衡神经刺激器
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Y. Manoli
中科院分区：
文献类型：
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作者：
Armin Taschwer;Natalie Butz;Manuel Kohler;D. Rossbach;Y. Manoli
提出了一种高能效的六通道神经刺激器原型，具有任意可编程的电流脉冲形状和高达49 V的高电压合规性。矩形、正弦曲线和指数形状是可能的，支持例如通过阳极和HF阻断的选择性刺激。该器件具有2 µA至10 mA电流幅度的高度灵活性，每个双相电流DAC具有9位分辨率，电流建立时间常数为0.8 µs，电压裕量低。每个通道都配备了无源电荷平衡，通过一个具有足够的2 kΩ导通电阻的高压开关实现。两个通道还配备了PI控制的失调补偿的主动电荷平衡。可实现的最小总静态功耗为每通道20.8 µW，如果启用主动电荷平衡（CB），则为41 µW。
A power-efficient six channel prototype of a neural stimulator, with arbitrary programmable current pulse shapes, and a high voltage compliance of up to 49 V is presented. Rectangular, sinusoidal and exponential shapes are possible, supporting e.g. selective stimulation via anodal and HF block. It features high flexibility in current amplitudes from 2 µA to 10 mA with 9-bit resolution per biphasic current DAC, current settling time constant of 0.8 µs, and low voltage headroom. Each channel is equipped with passive charge balancing by a high voltage switch with adequate on-resistance of 2 kΩ. Two channels are additionally equipped with active charge balancing by a PI-controlled offset compensation. The smallest achievable overall static power consumption is 20.8 µW per channel and 41 µW if active charge balancing (CB) is enabled.
影响因子：
5.4
作者：
Butz, Natalie;Taschwer, Armin;Kuhl, Matthias
通讯作者：
Kuhl, Matthias