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Publication Date: 12/1/2010
Archive >  December 2010 Issue >  New Products > 

PI Intros Affordable Digital Piezo Controller
Digital nanopositioning controller.
Auburn, MA — Piezo system specialist PI has introduced what the company calls a breakthrough development in nanopositioning stage control. The new E-709 provides true digital functionality at the price-point of an analog controller, all in a package about the size of a paperback book.

The digital servo's feature lineup: 5th order polynomial digital linearization ensures higher accuracy than analog; 2 notch filters allow faster response and piezo operation at higher frequencies; a fast servo update rate ensures responsiveness; DAC-in-the-loop architecture guarantees positional stability; several high-speed interfaces — USB, RS-232, real time analog and TTL; easy-to-use setup software for remote access and servo tuning, no trimpots; extensive, well-documented, interface-independent software support includes Windows .dll, Linux .so, and LabVIEW .llbs.

According to the company, the E-709 is 1/3 the price of the nearest competitor, opening up the possibilities of digital control for piezo-driven nanopositioning systems for the same price as analog controllers. It was designed for piezo actuators and nanopositioning stages with low-cost piezoresistive sensors and the higher performing capacitive sensors.

The digital servo technology allows greater linearity and precision and provides more control options — changing parameters on-the-fly, software optimized servo tuning — and very comfortable operation. The E-709 also includes a piezo power amplifier (driver), and no additional hardware is required.

In addition, the company provides the full functionality of its comprehensive software packages free of charge. The E-709 can also be used for applications that provide analog control signals, as are still widely used in microscopy applications. The system includes two digital interfaces, as well as a standard broadband analog input.

Applications include bio/nanotechnology, semiconductor technology, lithography, and optics.

Contact: PI (Physik Instrumente) L.P., 16 Albert St., Auburn, MA 01501 508-832-3456 fax: 508-832-0506 E-mail: Web:

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