A dedicated electrode driving ASIC for epidural spinal cord stimulation in rats

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A dedicated electrode driving ASIC for epidural spinal cord stimulation in rats

Conference Paper (2013)

Author(s)

Vasiliki Giagka (University College London)

Clemens Eder (University College London)

Virgilio Valente (University College London)

Anne Vanhoestenberghe (University College London)

Nick Donaldson (University College London)

Andreas Demosthenous (University College London)

Affiliation

External organisation

DOI related publication

https://doi.org/10.1109/ICECS.2013.6815456 Final published version

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https://resolver.tudelft.nl/uuid:2b5c61f7-861c-4917-a73d-026ad35d63f1

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Publication Year

2013

Language

English

Affiliation

External organisation

Article number

6815456

Pages (from-to)

469-472

ISBN (print)

9781479924523

Event

2013 IEEE 20th International Conference on Electronics, Circuits, and Systems, ICECS 2013 (2013-12-08 - 2013-12-11), Abu Dhabi, United Arab Emirates

Downloads counter

221

Abstract

This paper discusses the design of an application-specific integrated circuit (ASIC) suitable for mounting on a multi-electrode array for epidural spinal cord stimulation in rats. The ASIC acts as a demultiplexer, driving 12 electrodes on the array in any configuration. It is capable of routing biphasic constant current pulses of up to 1 mA to high impedance loads (with a maximum output voltage swing of approximately 25 V) and is small enough to be implanted into a rat's spinal column. Communication with its driver is achieved via 3 wires to minimize the number of interconnections. The circuit was implemented in a 0.18-μm high-voltage CMOS technology occupying a core area of 0.36 mm ². Power dissipation is about 110 μW. Post-layout simulations are presented which show the correct operation of the system.