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首页> 外文会议>International Symposium on Design and Diagnostics of Electronic Circuits Systems >8 Channel neural stimulation ASIC for epidural visual cortex stimulation with on board 90 ppm/??C current reference
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8 Channel neural stimulation ASIC for epidural visual cortex stimulation with on board 90 ppm/??C current reference

机译：8通道神经刺激ASIC用于硬膜外视觉皮质刺激与船上的90 ppm /Δ?C当前参考

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摘要

This paper presents an 8 channel neural stimulator ASIC for biphasic stimulation of the visual cortex, realized in a 0.35 ??m AMS HV process. Each channel is composed of an SPI interface, an 8-bit current digital-to-analog converter (DAC) and 120 V compliant HV output stage. Thus it is possible to deliver to the tissue arbitrary current waveforms with amplitudes up to ??10.24 mA with 40 ??A steps. According to the simulation results the maximum differential non-linearity is equal to 0.27 LSB. The on board current reference provides the output current of 16 ??A with the variation of 90 ppm/??C in the temperature range of 0???85?? C. While the anodic and cathodic currents mismatch does not exceed 13 ??A. The HV output interface of the ASIC was previously fabricated and measured. The measured interpulse leakage current does not exceed 60 pA.
机译：本文介绍了8个通道神经刺激剂ASIC，用于视觉皮层的双相刺激，实现在0.35米的AMS HV过程中。每个通道由SPI接口组成，8位电流数模转换器（DAC）和120 V兼容的HV输出级。因此，可以向组织的任意电流波形递送，其具有40.24mA的幅度为40.24 mA。根据仿真结果，最大差分非线性等于0.27LSB。电流电流参考提供16 ?? a的输出电流，在0≤0≤0≤0的温度范围内为90 ppm /Δω C.虽然阳极和阴极电流不匹配不超过13℃。先前制造和测量ASIC的HV输出接口。测量的闭管漏电流不超过60Pa。

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