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An ultra-low noise, high-voltage piezo-driver

TitleAn ultra-low noise, high-voltage piezo-driver
Publication TypeJournal Article
Year of Publication2016
AuthorsN.. C. Pisenti, A.. Restelli, B.. J. Reschovsky, D.. S. Barker, and G.. K. Campbell
JournalREVIEW OF SCIENTIFIC INSTRUMENTS
Volume87
Pagination124702
Date PublishedDEC
ISSN0034-6748
Abstract

We present an ultra-low noise, high-voltage driver suited for use with piezoelectric actuators and other low-current applications. The architecture uses a flyback switching regulator to generate up to 250 V in our current design, with an output of 1 kV or more possible with small modifications. A high slew-rate op-amp suppresses the residual switching noise, yielding a total root-mean-square noise of approximate to 100 mu V (1 Hz-100 kHz). A low-voltage (+/- 10 V), high bandwidth signal can be summed with unity gain directly onto the output, making the driver well-suited for closed-loop feedback applications. Digital control enables both repeatable setpoints and sophisticated control logic, and the circuit consumes less than 150 mA at +/- 15 V.

DOI10.1063/1.4969059

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