Design of a micropower current-mode log-domain analog cochlear implant

Author

Germanovix, W. ; Toumazou, C.

Author_Institution

Dept. of Electr. & Electron. Eng., Univ. Estadual de Londrina, Parana, Brazil

Volume

47

Issue

10

fYear

2000

fDate

10/1/2000 12:00:00 AM

Firstpage

1023

Lastpage

1046

Abstract

This paper presents some design concepts and circuits which are the basis of a very low-power analog cochlear prosthesis in silicon technology, The proposed methods use continuous interleaved sampling (CIS) combined with novel current-mode, micropower analog techniques such as log-domain processing. A tone-controller is presented which will allow bass and treble control tuned in an analog fashion. Electrical measurements on a silicon implementation of a single-channel cochlear implant confirm the feasibility of the proposed approach and its application in multichannel implants

Keywords

analogue processing circuits; biomedical electronics; current-mode circuits; ear; elemental semiconductors; hearing aids; low-power electronics; prosthetics; signal sampling; silicon; Si; analog cochlear implant; continuous interleaved sampling; log-domain processing; micropower current-mode log-domain circuit; multichannel implants; prosthesis; single-channel implant; tone-controller; Circuits; Cochlear implants; Computational Intelligence Society; Costs; Digital signal processing; Energy consumption; Paper technology; Prosthetics; Signal design; Silicon;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.877145

Filename

877145