July, 2011
www.us-tech.com
Page 69 Trek Intros High Voltage Piezo Amplifier
Medina, NY — Trek, Inc. has intro- duced a new linear high voltage power amplifier, the Trek Model PZD700A, which offers wide band- width and additional features impor- tant in electro-optics, MEMS, piezo- electric driving and semiconductor applications. Compared to other lin- ear amplifiers in the marketplace, this new model offers a special com- bination of capabilities which enhance its versatility and utility. The wide bandwidth of Model
PZD700A, for both large signal and small signal levels, in combination with the company’s technology for pre- cise control of output voltages, enable the amplifier to address the specific need for high speed and fast settling when driving capacitive loads in elec- tro-optics, MEMS, piezoelectric driv- ing/control, semiconductor research and other demanding applications such as laser modulation, ion beam control and vibration damping. The amplifier provides a large
signal bandwidth greater than 125kHz (-3dB) and a small signal bandwidth greater than 200kHz (- 3dB). This bandwidth capability is especially important in new piezo and piezo-stack applications, which require the high current levels as provided by this new amplifier. The fully protected output
enhances its usefulness in piezo and other reactive load applications by assuring that the amplifier is safe- guarded from incidental short cir-
PI: More Stable SR Microscope Stages
Auburn, MA — PI (Physik Instru - mente) LP has added two higher-per- formance models to its successful PInano™ superresolution (SR) micro- scope stage series. The new models are equipped with direct-measuring capa - citive sensors. This type of sensor can provide higher linearity and long term stability than the lower cost piezore- sistive sensor-equipped stages. Capa - citive sensors are also less sensitive to noise due to a high-frequency meas- urement principle as opposed to the DC-based sensing technique used in piezoresistive sensors. The net effect is similar to the higher quality and lower noise on FM radio channels compared to AM radio. The large aperture accommodates
microscopy accessories such as slide holders, Petri dish holders, etc. The recessed bottom slide mount allows full rotation of the turret without in and out Z-motion, protecting valuable objec- tives. Both XY and XYZ stages are available. The low profile design of 20mm (0.8-in.) facilitates integration into inverted microscopes from the four major manufacturers Leica, Nikon, Olympus and Zeiss. The microscope stages are compatible with all major image acquisition software packages. Contact: PI (Physik Instru -
mente) L.P., 16 Albert St., Auburn, MA 01501 % 508-832-3456 fax: 508- 832-0506 E-mail:
info@pi-usa.us Web:
www.pi-usa.us
See at Semicon West Booth 6342 North.
cuits, arcing or energy return from the load device. Industries and commercial
applications for the unit are diverse and include: semiconductors, elec- tronics, aerospace, biotechnology, defense, military, power, energy, lab- oratory, and instrumentation.
The unit’s design offers outstand- Piezo driver amplifier.
ing DC stability, high speed and pre- cise control of output voltages (DC or peak AC) in the programmable ranges of 0 to ±700V with an output current range of 0 to ±100mA (bipolar model); 0 to +1.4 kV with ±50mA (unipolar model); and 0 to -1.4kV with ±50mA (unipolar model). A special feature is an adjustable DC voltage gain, to 300V/V, by way of a user-friendly front panel potentiometer. The company also offers a PZD700A “M/S” design which delivers twice the current capability (double the power) of the standard PZD700A models. This high voltage amplifier model offers: DC stability, wide
bandwidth, well-regulated and con- trolled AC output signals, and full four-quadrant, class AB, all solid- state output stages. The four-quad- rant, active output stage sinks or sources current into reactive or resis- tive loads throughout the output voltage range. This is essential for achieving the accurate output re - sponse and high slew rates demand- ed by reactive loads. Contact: Trek, Inc., 11601
Maple Ridge Rd., Medina, NY 14103 % 800-367-8735 or 585-798-3140 fax: 585-798-3106 Web:
www.trekinc.com
See at Semicon West Booth 1827.
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See us at Semicon West Booth 6771 North
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