A Stimulator ASIC Featuring Versatile Management for Vestibular Prostheses

Author

Dai Jiang ; Demosthenous, A. ; Perkins, T. ; Xiao Liu ; Donaldson, N.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. Coll. London, London, UK

Volume

5

Issue

2

fYear

2011

fDate

4/1/2011 12:00:00 AM

Firstpage

147

Lastpage

159

Abstract

This paper presents a multichannel stimulator ASIC for an implantable vestibular prosthesis. The system features versatile stimulation management which allows fine setting of the parameters for biphasic stimulation pulses. To address the problem of charge imbalance due to rounding errors, the digital processor can calculate and provide accurate charge correction. A technique to reduce the data rate to the stimulator is described. The stimulator ASIC was implemented in 0.6-μ m high-voltage CMOS technology occupying an area of 2.27 mm². The measured performance of the ASIC has been verified using vestibular electrodes in saline.

Keywords

CMOS integrated circuits; application specific integrated circuits; biomedical electronics; prosthetics; biphasic stimulation pulses; charge correction; digital processor; high-voltage CMOS technology; implantable vestibular prosthesis; multichannel stimulator ASIC; saline; size 0.6 mum; versatile stimulation management; vestibular electrodes; Application specific integrated circuits; Clocks; Electrodes; Irrigation; Prosthetics; Radiation detectors; Synchronization; Charge balance; data compression; implanted device; neural stimulation; stimulation management; vestibular prosthesis;

fLanguage

English

Journal_Title

Biomedical Circuits and Systems, IEEE Transactions on

Publisher

ieee

ISSN

1932-4545

Type

jour

DOI

10.1109/TBCAS.2011.2138139

Filename

5759288