Nanopositioning Controllers: Single-Axis Digital & Analog

Digital servos provide advantages over analog circuits when high positioning linearity is important or when control parameters need to be modified frequently. This could be the case when load changes occur or when different motion profiles need to be optimized for minimum settling time or optimum tracking accuracy.

Analog servos are usually less expensive than digital servos. If designed well, they provide very low noise and fast response at a very attractive price.

All PI piezo nanopositioning controllers come with tunable notch filters and provide the highest closed-loop bandwidth in the industry.


Detailed Controller Selection Criteria (PDF)     For Multi-Axis Controllers Click Here



Digital Controllers (Digital Servo)



E-709 Digital Piezo Nanopositioning Controller: Low Cost, High Performance

E-709 Digital  Nanopositioning Controller

The E-709 piezo nanopositioning controller is the most cost effective full featured digital piezo controller available. It provides the flexibility and adaptability of a digital signal processing unit for the cost of an analog controller.

Digital 5th order polynomial linearization algorithms can improve the motion linearity of the attached piezo positioning system significantly over an analog servo system. The unit features a variety of digital interfaces as well as an analog input and output. The analog input can be configured as position control signal or as a sensor value.

  • Fast Digital Servo, All Parameters Configurable in Software, Change of Settings "on-the-fly"
  • Comprehensive Software Package
  • Two versions available: for low cost strain gauge sensors and for high performance capacitance sensors.
  • Digital Servo improves Linearity of Foil and Piezoresistive Strain Sensors to 0.02%
  • Three Digital Interfaces: USB, Fast 25 Mbit/s Serial Interface & RS-232
  • Additional High-Bandwidth Analog Control Interface / Sensor Input
  • Comprehensive I/O Functions
  • Analog Output, e.g. for External Amplifiers
  • Low-Cost OEM Versions Available

The analog output can be switched to provide either a signal analogous to the position or to control an external power amplifier should more current be required than can be provided by the internal amp.


PDF Brochure
Specs & Info Request: E-709 for Lower-Cost, Strain Gauge Sensors
Specs & Info Request: E-709 for Higher Precision, Capacitive Sensors

Paper: Enabling Applications with PI's Breakthrough
Cost-Optimized Digital Piezo Controller





E-753 Ultra-High Performance Digital Piezo Nanopositioning Controller

  • Extensive Software Support
  • 100 kHz Sensor Sampling; 32-bit Floating Point DSP; 24-bit Low-Noise D/A Converters
  • Ethernet (TCP/IP) interface for Remote Control Capability + RS-232 serial interface
  • Additional High-Bandwidth Analog Control Input / Sensor Input
  • ID-Chip Capability for Interchangeability of Controller & Piezo Mechanics
  • Digital I/O Lines Triggering Functions
  • For Nanopositioning Systems with Capacitive Feedback

The E-753 digital piezo controller is a high-end nanopositioning controller designed to meet the most demanding accuracy and dynamic-performance requirements of nanopositioning systems of the highest precision class.

PDF Brochure | Specs, Request Information

E-753 Ultra-High Performance Digital Controller




E-609 Low-Cost OEM Piezo Nanopositioning Controller Card with Digital Servo and Analog Interface


E-609 Piezo Nanopositioning Controller Card
  • Most Cost-Efficient Digital Piezo Controller
  • Servo Tuning and Parameter Setting by Software
  • Position Control through Analog Control Interface (0-10V)
  • Digital Algorithms Improve Linearity

The E-609 is an OEM controller that opens up the possibilities of digital piezo control for for the same price as analog controllers. All signal processing in the E-609 is purely digital, and the digital servo can be easily optimized and tuned via the USB interface and the included software.

For ease of integration in applications with analog control signals, the unit is controlled via a 0 to 10 V signal.

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Analog Piezo Controllers (some with Digital Interface)



E-625 Bench-Top Piezo Nanopositioning Servo-Controller & Driver, with 24 Bit USB Interface


  • USB Interface, 24 Bit DAC Resolution
  • Additional High Bandwidth Analog Interface
  • Multi-Axis Networkable up to 12 Channels
  • Up to 12 W Peak Power
  • Choice of Position Sensor: Strain Gauge (lower cost) or Capacitive (higher precision)
  • Notch Filter for Higher Bandwidth
  • Table for User-Defined Curves

The E-625 piezo nanopositioning controller is equipped with a high speed USB interface and precision 24-bit A/D converters for exceptional positional stability and resolution. It also provides an analog command interface and a serial RS-232 connection. A low-noise piezo driver capable of providing 120 mA current is integrated.

E-625 Benchtop Controller

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E-665 Bench-Top Piezo Nanopositioning Servo-Controller & Driver, 24 Bit USB Interface & Display


E-665 Bench-Top Piezo Nanopositioning Servo-Controller & Driver
  • USB Interface, 24 Bit DAC Resolution
  • Additional High Bandwidth Analog Interface
  • Multi-Axis Networkable up to 12 Channels
  • High Power: 360 mA Peak Current
  • Choice of Position Sensor: Strain Gauge (lower cost) or Capacitive (higher precision)
  • Notch Filter for Higher Bandwidth
  • Table for User-Defined Curves

The E-665 provides more current (360 mA peak) than the E-625 and also adds a display and manual controls in a bench-top metal case. Versions for both position capacitive and strain gauge feedback sensors are available.

PDF Brochure | Specs, Request Information





E-621 Piezo Nanopositioning Servo-Controller & Driver Card, with 24 Bit USB Interface


  • USB Interface, 24 Bit DAC Resolution
  • Additional High Bandwidth Analog Interface
  • Multi-Axis Configuration with special Chassis for up to 12 Channels per Chassis
  • Up to 12 W Peak Power
  • Choice of Position Sensor: Strain Gauge (lower cost) or Capacitive (higher precision)
  • Notch Filter for Higher Bandwidth
  • Table for User-Defined Curves

The E-621 is the OEM version of the E-625 bench top unit. It can also be installed in a special E-500.621 rack for up to 12 channels.

E-621 Piezo Nanopositioning Servo-Controller & Driver Card

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E-610 OEM Piezo Amplifier / Nanopositioning Controller Card

E-610 OEM Piezo Amplifier

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  • Cost-Effective 1-Channel OEM Solution
  • Analog Control Interface (0-10V)
  • Closed-Loop & Open-Loop Versions
  • Notch Filter for Higher Bandwidth
  • Choice of Position Sensor: Strain Gauge (lower cost) or Capacitive (higher precision)
  • High Power up to 180 mA Peak Current

The E-610 is an OEM closed-loop piezo controller with integrated low-noise piezo driver It can provide peak currents of 180 mA in a voltage range of -20 to +120 V. Versions for both position capacitive and strain gauge feedback sensors are available.





E-501 Modular Piezo Nanopositioning Controller, 9.5" Rack


  • Choice of Amplifier Modules for Low-Voltage and High-Voltage, 30 to 400 W Peak Power
  • Choice of Position Servo Control Modules for SGS & Capacitive Sensors
  • Choice of Digital Interface / Display Modules
  • 9 1/2 Inch Chassis

E-501 Modular Piezo Nanopositioning Controller, 9.5
E-505 Piezo Amplifier Module
High Power, E-500 Piezo Controller System
E-501 Modular Piezo Nanopositioning Controller

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The E-500 / E-501 rack is a very flexible modular piezo controller system that can be configured in hundreds of ways. Different amplifier modules, interface modules sensor modules and servo controller modules allow the systems to be adapted to a wide range of applications.
E-500 systems are assembled to order, tested, and, if a servo-controller is present, calibrated with the associated piezo mechanics.




E-618 High Dynamics, High-Power Piezo Amplifier with 20 A Peak Currents


E-618 High Dynamics, High-Power Piezo Amplifier
  • 20 A Peak Current, Micro Second Rise Time
  • 3200 W Peak Power
  • 15 kHz Bandwidth for High Dynamics Applications
  • Piezo Ceramics Protection with Temperature Sensor
  • Analog an Optional Digital Interfaces

The E-618 high-power amplifier/controller is specifically designed for ultra-high-dynamics operation of piezo actuators (translators). It can output and sink a peak current of 20 A and an average current of 800 mA in a voltage range of -30 to 130 V.

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E-617 Energy Recovery Piezo Amplifier, 280W Power


  • Energy Recovery for Low Power Consumption
  • 280 W Peak Power
  • 2000 mA Peak Current
  • OEM Module and Top-Hat-Rail Versions

The energy recovery circuit makes the E-617 an exceptionally efficient, high-power, piezo driver, for high-capacitance piezo actuators at frequencies in the kilohertz range. Providing peak power of up to 280 W and average power of 100 W, it can output and sink a peak current of 2000 mA.

E-617 Energy Recovery Piezo Amplifier

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For Multi-Axis Controllers Click Here