title: An ultra-low noise, high-voltage piezo-driver.
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 ≈100 μV (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.
authors.affiliation: Joint Quantum Institute, University of Maryland and National Institute of Standards and Technology, College Park, Maryland 20742, USA.
authors.forename: N C
authors.initials: NC
authors.lastname: Pisenti
authors.affiliation: Joint Quantum Institute, University of Maryland and National Institute of Standards and Technology, College Park, Maryland 20742, USA.
authors.forename: A
authors.initials: A
authors.lastname: Restelli
authors.affiliation: Joint Quantum Institute, University of Maryland and National Institute of Standards and Technology, College Park, Maryland 20742, USA.
authors.forename: B J
authors.initials: BJ
authors.lastname: Reschovsky
authors.affiliation: Joint Quantum Institute, University of Maryland and National Institute of Standards and Technology, College Park, Maryland 20742, USA.
authors.forename: D S
authors.initials: DS
authors.lastname: Barker
authors.affiliation: Joint Quantum Institute, University of Maryland and National Institute of Standards and Technology, College Park, Maryland 20742, USA.
authors.forename: G K
authors.initials: GK
authors.lastname: Campbell