Novel Charge-Metering Stimulus Amplifier for Biomimetic Implantable Prosthesis

A novel charge-metering stimulus amplifier is proposed for high performance neural prosthesis stimulation. The new charge-based approach with feedback has low charge error 0.5%, low charge imbalance 0.2%, and high power efficiency. Charge-metering stimulus amplifier can be implemented using advanced...

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Bibliographische Detailangaben
Hauptverfasser: Fang, Xiang, Wills, Jack, Granacki, John, LaCoss, Jeff, Arakelian, Artak, Weiland, James
Format: Tagungsbericht
Sprache:eng
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Beschreibung
Zusammenfassung:A novel charge-metering stimulus amplifier is proposed for high performance neural prosthesis stimulation. The new charge-based approach with feedback has low charge error 0.5%, low charge imbalance 0.2%, and high power efficiency. Charge-metering stimulus amplifier can be implemented using advanced 0.18um CMOS technology and is compatible with Mixed-Signal System-on-a-Chip (SoC) implantable devices. It also has the capability to monitor the electrode-tissue contact quality and estimate the interface impedance in real-time for robust stimulation.
ISSN:0271-4302
2158-1525
DOI:10.1109/ISCAS.2007.378801