Options
Hybrid architecture of a DAC for neurostimulation
Publikationstyp
Conference Paper
Date Issued
2012
Sprache
English
Author(s)
Meza Cuevas, Mario Alberto
Ramesh, Karthik
Article Number
6465499
Citation
5th Biomedical Engineering International Conference (BMEiCON 2012)
Contribution to Conference
5th Biomedical Engineering International Conference, BMEiCON 2012
Publisher DOI
Scopus ID
Publisher
IEEE
ISBN
978-1-4673-4890-4
978-1-4673-4891-1
978-1-4673-4892-8
Electrical Neurostimulation has been effective for treating and reducing symptoms of neurological diseases, for alleviating some types of chronic pain and for restoring sensory or neuromuscular deficits. Because of the energy and size limitation on fully implantable devices, it is important to keep devices small and at low power. It was already demonstrated that non-rectangular waveforms provide a more energy-efficient neural stimulation. In this article is shown how a hybrid architecture of current steering DAC is suitable to this application, because of its specifications: the ability to convert several waveforms directly from digital to analog current signals, low power consumption, small chip area requirement, the capability of sharing common stages and also for its simplicity. An ASIC has been developed composed of four stimulator channels, capable of driving several current waveforms. The design is implemented in 130 nm CMOS technology.
Subjects
Current steering
Current stimulation
Dac
Electrical stimulation
Neurostimulation
Stimulation waveform
DDC Class
621.3: Electrical Engineering, Electronic Engineering