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An ultra-low noise, high-voltage piezo-driver (2016)

N. C. Pisenti, A. Restelli, B. J. Reschovsky, D. S. Barker and G. K. Campbell

American Institute of Physics (AIP)

In: Review of Scientific Instruments

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Publication Date: 2016-12-09

Description: 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 ≈100 μ 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.

Print ISSN: 0034-6748

Electronic ISSN: 1089-7623

Topics: Electrical Engineering, Measurement and Control Technology , Physics

Published by American Institute of Physics (AIP)

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