Mai Songping, Wang Zhijun, Zhang Chun, Wang Zhihua
Lab of Integrated Circuits and Systems Design, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China.
Annu Int Conf IEEE Eng Med Biol Soc. 2012;2012:6595-9. doi: 10.1109/EMBC.2012.6347506.
This paper presents an implantable inductively powered mix-signal chip for neural stimulation, which is implemented in 0.35-µm high-voltage CMOS process. It features 16 stimulating channels and a maximum stimulating rate of 15Kbps. The frequency, amplitude and width of stimulating pulses are all wirelessly programmable. Charge balance is guaranteed by a flexible switch array at the stimulating output stage. And to reduce power consumption, a dual-voltage-source scheme is adopted also at the stimulating output stage. Measurement results show that the proposed chip consumes less than 1mA at typical working conditions.
本文介绍了一种用于神经刺激的植入式电感供电混合信号芯片，该芯片采用0.35μm高压CMOS工艺实现。它具有16个刺激通道，最大刺激速率为15Kbps。刺激脉冲的频率、幅度和宽度均可无线编程。在刺激输出阶段，通过灵活的开关阵列保证电荷平衡。并且为了降低功耗，在刺激输出阶段还采用了双电压源方案。测量结果表明，该芯片在典型工作条件下的功耗小于1mA。
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