Slew rate contol of VDD supply

Discussion in 'General Electronics Chat' started by jhussain, May 19, 2008.

  1. jhussain

    Thread Starter New Member

    May 19, 2008
    3
    0
    Hello!

    I have a need to control the slew rate of the VDD applied to my chip for testing. Anyone has any idea how can I do that without any complicated circuit or equipment/

    Thanks.
     
  2. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
    5,692
    901
    What limits of slew rate do you want? Something like a constant current source, but re-settable to a desired current, and a small capacitor comes to mind.

    In the alternative, check the datasheets for any of the newer OP-amps. They will show the apparatus for measuring slew rate. John
     
  3. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Read this website here for how to build an integrator using an op-amp

    http://www.allaboutcircuits.com/vol_3/chpt_8/11.html

    An integrator will give you an output voltage rising linearly depending on the value of the constant voltage at its input. Hence, the output's slew rate is controlled by a dc signal at the op-amp's input.
     
  4. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    What is your target voltage slew rate?

    What is your current requirement at that slew rate?
     
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