Piezo Pulse Amplifier

[J. McMillan]

I am working on a system that will drive a piezoelectric inkjet head.
A microcontroller and a digital-to-analog converter is being used to
produce a controlled pulse shape (a specific rise time, hold time, and
fall time).

This pulse then needs to be amplified from 5 volts to the 15 to 30 volt
range. The pulses will have rise and fall times in the 1 us to 20 us
range.

I have seen a solution that uses the Apex line of high voltage/high slew
rate opamps but I think those might be over kill and I am looking for
something cheaper.

Does anyone have any implementation suggestions?

Sincerely,
James McMillan

 

[CWatters]

What about using a video amp designed to drive CRT tubes or similar
TV/Monitor part?. Something like these...

perhapshttp://www.repartout.com/Datasheets/TEA5101.pdf
http://us.st.com/stonline/books/ascii/docs/1615.htm

...but perhaps not exactly these parts - I haven't checked they meet your
specs.




"J. McMillan" <j.NOSPAMdeleteTHISmcmillan@utoronto.ca> wrote in message
news:SVEtb.51183$xI2.1614295@news20.bellglobal.com...

I am working on a system that will drive a piezoelectric inkjet head.
A microcontroller and a digital-to-analog converter is being used to
produce a controlled pulse shape (a specific rise time, hold time, and
fall time).

This pulse then needs to be amplified from 5 volts to the 15 to 30 volt
range. The pulses will have rise and fall times in the 1 us to 20 us
range.

I have seen a solution that uses the Apex line of high voltage/high slew
rate opamps but I think those might be over kill and I am looking for
something cheaper.

Does anyone have any implementation suggestions?

Sincerely,
James McMillan