Title :
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
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;
Conference_Titel :
Circuit Theory and Design, 2005. Proceedings of the 2005 European Conference on
Print_ISBN :
0-7803-9066-0
DOI :
10.1109/ECCTD.2005.1523049