Can an op-amp with high slew rate replace an op-amp with low slew rate in a partic

Discussion in 'The Projects Forum' started by kling, May 13, 2012.

  1. kling

    Thread Starter New Member

    May 12, 2012
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    in a particular application? :D:D pls help! :confused::confused::confused:
     
  2. crutschow

    Expert

    Mar 14, 2008
    13,013
    3,233
    Except for perhaps some unusual application requirements, a higher slew rate op amp should work fine.
     
  3. ErnieM

    AAC Fanatic!

    Apr 24, 2011
    7,388
    1,605
    It may overshoot or even oscillate where the original part would be fine. Or not.
     
  4. bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    507
    Phase margin/stability needs to be considered.
     
  5. crutschow

    Expert

    Mar 14, 2008
    13,013
    3,233
    The slew rate has little effect on an op amp circuit's phase margin or tendency to oscillate, that's largely determined by the open loop gain and phase response. The slew rate mainly affects the maximum frequency the op amp can amplify with little distortion to a given output voltage.
     
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