Title :
CMOS current-copying neural stimulator with OTA-sharing
Author :
Shulyzki, Ruslana ; Abdelhalim, Karim ; Genov, Roman
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada
fDate :
May 30 2010-June 2 2010
Abstract :
We present a compact current mode stimulator for utilization in neural stimulation arrays. The stimulator is implemented in a 0.35μm CMOS technology and occupies an area of 50μm×400μm. The memory in every current driver allows for simultaneous stimulation on multiple active channels when used as part of an array of stimulators. Circuit reuse in the stimulator and utilization of a single DAC yield a compact and low-power implementation. The current driver dissipates a quiescent power of 2.76μW. The stimulator can output current in the range of 10μA-250μA.
Keywords :
CMOS integrated circuits; operational amplifiers; CMOS current-copying neural stimulator; CMOS technology; OTA-sharing; compact current mode stimulator; current 10 muA to 250 muA; power 2.76 muW; size 0.35 micron; Biomedical electrodes; CMOS technology; Driver circuits; Electrical stimulation; Implantable biomedical devices; Neural prosthesis; Retina; Safety; Signal resolution; Voltage control;
Conference_Titel :
Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on
Conference_Location :
Paris
Print_ISBN :
978-1-4244-5308-5
Electronic_ISBN :
978-1-4244-5309-2
DOI :
10.1109/ISCAS.2010.5537284
