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What is a high speed high voltage amplifier?
A high voltage amplifier is used to convert or amplify a low magnitude voltage signal as the input of the amplifier which draw little or almost zero current from this signal to a high magnitude voltage signal, usually >1000V, as the output which can source or sink certain level of current and be from as low as 10uA to as high as 1A. The input signal can be from an analog or digital signal source. The output signal has the same shape as that of the input signal but the magnification gain remain the same, which can be from 10 to 1000. As the name suggested, a high speed high voltage amplifier must have a high speed output capability, the bandwidth must be ≥ 1MHz and slew rate must be > 5000V/μS. Analog Technologies, Inc., has a broad range of high speed high voltage amplifiers. Some have the world's highest speed. One such an amplifier has the flowing main specifications: input voltage = 24V, amplification gain = 200, input voltage range = –10 to 10V, output voltage range = –2000V to 2000V, maximum output current = 100mA, bandwidth = 15kHz, maximum slew rate = 1,200V/μs, and voltage noise floor level = 400μVpp@0.1Hz~10Hz. In addition, this high speed high voltage amplifier comes with the following protection features: power supply input under and over voltage lock-out, input signal ESD voltage, over temperature shut down, turn-on soft start, output current limit, etc.
