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driving large capacitive loads

Timothy Starr
Expert 2445 points
Other Parts Discussed in Thread: LM8272

Hello-

We need help picking an op amp and drive circuit for driving a highly capaciitive load. Refer tothe attached circuit diagram.

The original plan was to use the LM8272 to replace the AMP01, but the absolute max voltage spec on LM8272 is (V+, V-) 27 Volts. That is a problem in this application.

Can you suggest a higher voltage part (+/- 18V) at least, i.e. surface mount, dual op amp, cap driver…………. similar to LM8272.

Thanks and Best Regards,

Tim Starr on behalf of Al Kumar

highly capcitive load.docx
  • 0
    TI__Guru* 93105 points

    Hi Timothy,

    Indeed we have an excellent dual operational-amplifier that meets, or exceeds, the LM8272 performance; the TLE2142CD (SOIC), or TLE2142CP (TSSOP). It can handle supplies up to +/-22V and drive hefty capacitive loads.

    Regards, Thomas

    PA-Linear Applications Engineering