An Inductively Coupled Power and Data Link with Self-referenced ASK Demodulator and Wide-range LDO for Bio-implantable Devices

Byeonggyu Park, Tae-Gwon Yun, Kyongsu Lee, Jin-Ku Kang
2017 JSTS Journal of Semiconductor Technology and Science  
This paper describes a neural stimulation system that employs an inductive coupling link to transfer power and data wirelessly. For the reliable data and power delivery, a self-referenced amplitudeshift keying (ASK) demodulator and a wide-range voltage regulator are suggested and implemented in the proposed stimulator system. The prototype fabricated in 0.35 um BCD process successfully transferred 1.2 Kbps data bi-directionally while supplying 4.5 mW power to internal MCU and stimulation block.
more » ... Index Terms-Neural stimulator, near-field inductive coupling, maximum power transfer efficiency (PTE), implanted device
doi:10.5573/jsts.2017.17.1.120 fatcat:uqqxalvmybfrpe7oqp77gubs64