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High Frequency High Voltage amplifier for piezoelectric transducers

I need to drive multiple piezoelectric transducer at high frequencies(1MHz - 8MHz), but my function generator is not able to provide high voltage(ranging from 100-250v is needed for effective vibration amplitude). I am not sure what amplifier would be suitable for these frequencies, as this seems to be quite difficult to achieve. I would appreciate it if anyone could help me figure out what amplifier would be able to provide me with what I need.

Thanks in advance.

  • WE do not have anything that will do this. Consider to float the transducer to double the voltage across it and double the slew rate as it will be a BTL (Bridge Tied Load). If 250Vpp is needed at 8MHz, by SR=2piF*Vop --> 6,283V/us!! Even in a bridge circuit each op amp must have a slew rate of each op amp would need to be 3,142V/us! The other factor is what is the capacitive load of the Piezo as the op amp must be stable when it drives this? You need to bound this drive to the smallest voltage and lowest frequency possible. You may look online for an end Piezo Drive Amplifier that can do this as an off-the-shelf product.
  • Amin

    We haven't heard back from you so we assume this answered your question.

    Thanks
    Dennis