High Voltage Amplifier/ Piezo Driver

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What Are A High Speed High Voltage Amplifiers?

High voltage amplifiers are used to convert or amplify low voltage signals to high voltage signals, usually greater than 1000V, as the output which can source or sink a certain level of current ranging from as low as 10uA to as high as 1A. The input signal can be from an analog or digital signal source and is amplified by 100 to 1000 times to become the output signal. As the name suggests, a high speed high voltage amplifier must have a high speed output capability, with a bandwidth of at least 1MHz and a slew rate greater than 2400V/μS. Analog Technologies, Inc. has a broad range of high speed high voltage amplifiers, some of which have the world’s highest speed. One such amplifier has the following typical specifications:
Power supply input voltage = 24V
Amplification gain = 200
Input signal voltage = –10V to 10V
Output voltage = –2000V to 2000V
Maximum output current = 100mA
Amplification bandwidth = 15kHz
Maximum slew rate = 2,400V/μs
Output voltage noise = 400μV_{p_p} @ 0.1Hz to 10Hz
In addition, this high speed high voltage amplifier comes with the following protection features: under and over voltage lock-out for power supply input, ESD blocking for input signals, over temperature shut down, turn-on soft start, and output current limit.