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A Fast and Safe Discharge Circuit for Implantable Stimulators Using a Depletion Transistor

Liu, X; Demosthenous, A; (2009) A Fast and Safe Discharge Circuit for Implantable Stimulators Using a Depletion Transistor. In: 2009 IEEE BIOMEDICAL CIRCUITS AND SYSTEMS CONFERENCE (BIOCAS 2009). (pp. 168 - 171). IEEE

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Abstract

Maintaining charge balance is very important for chronic implantable stimulation applications. Passive discharge is a simple and reliable method for achieving charge balance. However, conventional passive discharge methods via a resistor or a MOS transistor require long discharge cycles, hence relatively low stimulation rates. We present a new fail-safe passive discharge circuit employing a depletion transistor which provides fast discharge, at least 50% faster than the other methods. A stimulator circuit was simulated in a 0.6-mu m silicon-on-insulator CMOS process to verify the new method. The circuit design and simulation results are presented.

Type:Proceedings paper
Title:A Fast and Safe Discharge Circuit for Implantable Stimulators Using a Depletion Transistor
Event:IEEE Biomedical Circuits and Systems Conference
Location:Beijing, PEOPLES R CHINA
Dates:2009-11-26 - 2009-11-28
ISBN-13:978-1-4244-4917-0
Keywords:FAIL-SAFE
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering

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