An improved, very long time-constant CMOS integrator for use in implantable neuroprosthetic devices

Author

Triantis, Iasonas F. ; Demosthenous, Andreas

Author_Institution

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

Volume

3

fYear

2005

fDate

28 Aug.-2 Sept. 2005

Abstract

This paper describes a CMOS integrator for use with an adaptive neural amplifier. The device can also be used standalone. It utilizes transconductance cancellation to achieve a large time-constant, which is tunable between 1-17 s. The design presented here features reduced complexity compared to previous published work for that application. Measured results demonstrate integration with no output drift, tunable time-constant and low total harmonic distortion. The device can also be operated as a low-pass filter.

Keywords

CMOS integrated circuits; harmonic distortion; instrumentation amplifiers; integrating circuits; low-pass filters; neuromuscular stimulation; prosthetics; 1 to 17 s; CMOS integrator; adaptive neural amplifier; harmonic distortion; implantable neuroprosthetic devices; low pass filter; transconductance cancellation; Distortion measurement; Educational institutions; Implants; Interference; Low pass filters; Neural prosthesis; Resistors; Total harmonic distortion; Transconductance; Tunable circuits and devices;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuit Theory and Design, 2005. Proceedings of the 2005 European Conference on

Print_ISBN

0-7803-9066-0

Type

conf

DOI

10.1109/ECCTD.2005.1523049

Filename

1523049