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

fYear

2010

fDate

May 30 2010-June 2 2010

Firstpage

1232

Lastpage

1235

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISCAS.2010.5537284

Filename

5537284