A flexible high voltage biphasic current-controlled stimulator

Author

Nadeau, Patrick ; Sawan, Mohamad

Author_Institution

Dept. of Electr. Eng., Ecole Polytech. de Montreal, Montreal, QC

fYear

2006

fDate

Nov. 29 2006-Dec. 1 2006

Firstpage

206

Lastpage

209

Abstract

The efficiency of implantable stimulation systems depends in large proportion of the electrode-tissue interface condition and in the choice of appropriate stimuli waveform. In this paper, we present an integrated flexible stimuli generator dedicated for high current stimulation in large electrode-tissue contact impedance. The system, powered by a single 3.3 V supply level, includes an integrated high voltage generator in order to supplies the output stage with -10 V/+10 V. High voltage parts are implemented in a 9 mm² chip using a 0.8 um high voltage process. For area and power efficiency concern, the control unit of the whole device is implemented in a standard 0.18 um technology and use 1.96 mm² of silicon area. Preliminary results indicate that the stimuli generator can deliver a stimulating current of 2 mA in electrode-tissue impedance as high as 9.125 kOmega.

Keywords

CMOS integrated circuits; bioelectric phenomena; biological tissues; biomedical electrodes; biomedical electronics; prosthetics; pulse generators; current 2 mA; current-controlled stimulator; electrode-tissue contact impedance; electrode-tissue interface; high-voltage biphasic pulse generator; implantable stimulation systems; integrated flexible stimuli generator; resistance 9.125 kohm; stimuli waveform; Bladder; CMOS process; Digital control; Electrical stimulation; Electrodes; Impedance; Nervous system; Pulse generation; Radio frequency; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Circuits and Systems Conference, 2006. BioCAS 2006. IEEE

Conference_Location

London

Print_ISBN

978-1-4244-0436-0

Electronic_ISBN

978-1-4244-0437-7

Type

conf

DOI

10.1109/BIOCAS.2006.4600344

Filename

4600344