Title :
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
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;
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
DOI :
10.1109/ISCAS.2008.4541965
