A partial-current-steering biphasic stimulation driver for neural prostheses

Author

Constandinou, Timothy G. ; Georgiou, Julius ; Toumazou, Chris

Author_Institution

ECE Dept., Univ. of Cyprus, Nicosia

fYear

2008

fDate

18-21 May 2008

Firstpage

2506

Lastpage

2509

Abstract

This paper describes a novel partial-current-steering stimulation drive for implantable neural prosthetics. The drive hardware momentarily delivers a charge-balanced asymmetric stimulus to a dummy load before steering towards the stimulation electrodes. In this fashion, power is conserved whilst still gaining from the benefits of current steering. The circuit has been designed to be digitally programmable as part of an implantable vestibular prosthesis. The hardware has been implemented in AMS 0.35 mum 2P4M CMOS technology.

Keywords

CMOS integrated circuits; biomedical electronics; prosthetics; 2P4M CMOS technology; charge-balanced asymmetric stimulus; implantable neural prosthetics; implantable vestibular prosthesis; partial-current-steering biphasic stimulation driver; size 0.35 micron; stimulation electrodes; Back; Biomedical engineering; CMOS technology; Circuits; Electrodes; Fatigue; Hardware; Neural prosthesis; Prosthetics; Sampling methods; biphasic pulse; continuous interleave sampling; current steering; electrical stimulation; prosthesis;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on

Conference_Location

Seattle, WA

Print_ISBN

978-1-4244-1683-7

Electronic_ISBN

978-1-4244-1684-4

Type

conf

DOI

10.1109/ISCAS.2008.4541965

Filename

4541965