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High-voltage amp fits piezoelectrics, MEMS apps

Posted: 26 May 2009 ?? ?Print Version ?Bookmark and Share

Keywords:power amplifier? piezoelectrics? MEMS?

PZD350A power amplifier

Trek Inc. is offer the PZD350A high voltage power amplifier, which offers wide bandwidth and additional features important in piezoelectrics, electro-optics, MEMS and other applications.

The wide bandwidth of PZD350A, for both large signal and small signal levels, in combination with Trek's technology for precise control of output voltages, enable the amplifier to address the specific need for high speed and fast settling when driving capacitive loads in piezoelectric driving/control, electro-optics, MEMS and other demanding applications such as laser modulation and ion beam control.

The PZD350A provides a large signal bandwidth of 250kHz (-3dB) and a small signal bandwidth greater than 350kHz (-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 from Trek. The fully protected output of PZD350A enhances the utility of this unit in piezo and other reactive load applications by assuring that the amplifier is safe-guarded from incidental short circuits, arcing or energy return from the load device.

The PZD350A design offers outstanding DC stability, high speed and precise control of output voltages (DC or peak AC) in the programmable ranges of 0 to 350 V with an output current range of 0 to 200mA (bipolar model); 0 to +700V with 100mA (unipolar model); 0 to -700V with 100mA (unipolar model). An alternative PZD350A "M/S" design offers twice the current capability of the standard PZD350A models.

The PZD350A advancements will benefit several industrial and commercial applications such as aerospace, biotechnology, defense, military, power, energy, laboratory, instrumentation, semiconductors, electronics and others.

Like all Trek amplifiers, the PZD350A offers DC stability, wide bandwidth, well-regulated and controlled AC output signals, and full four-quadrant, class AB, all-solid-state output stages. The four-quadrant, active output stage sinks or sources current into reactive or resistive loads throughout the output voltage range. This is essential for achieving the accurate output response and high slew rates demanded by reactive loads.

Other technical parameters for the Model PZD350A include DC accuracy better than 0.1 percent of full scale and slew rate greater than 500V/?s (350V range) or 350V/?s (700V range). The unit has precision voltage and current monitors. It is also CE marked.

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