A wirelessly programmable chip for multi-channel neural stimulation.
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.
Lab of Integrated Circuits and Systems Design, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China. mai.songping@sz.tsinghua.edu.cn
Songping
S
Mai
Zhijun
Z
Wang
Chun
C
Zhang
Zhihua
Z
Wang
D003054:Cochlear Implants; D004599:Electric Stimulation Therapy / Q000295:instrumentation* / Q000379:methods*; D004566:Electrodes; D004594:Electrophysiology / Q000379:methods; D004867:Equipment Design; D006801:Humans; D009474:Neurons / Q000473:pathology*; D019736:Prostheses and Implants; D015203:Reproducibility of Results; D012815:Signal Processing, Computer-Assisted; D013116:Spinal Cord / Q000473:pathology; D059015:Wireless Technology