A power-efficient voltage-based neural tissue stimulator with energy recovery

A voltage-based neural stimulator for an implant is fabricated in 1.5/spl mu/m CMOS. Wireless power transmission and synchronous rectification allow the use of a set of intermediate voltage supplies. This system achieves power consumption 53% lower than traditional current-source stimulators delivering the same charge to electrodes.

[1]  K. Najafi,et al.  A single-channel implantable microstimulator for functional neuromuscular stimulation , 1997, IEEE Transactions on Biomedical Engineering.

[2]  Rahul Sarpeshkar,et al.  Predictive comparators with adaptive control , 2003, IEEE Trans. Circuits Syst. II Express Briefs.

[3]  Mel Bazes,et al.  Two novel fully complementary self-biased CMOS differential amplifiers , 1991 .

[4]  W. Liu,et al.  A neuro-stimulus chip with telemetry unit for retinal prosthetic device , 2000, IEEE Journal of Solid-State Circuits.