when is it important to know about op-amp Gain Bandwidth Product?

Discussion in 'The Projects Forum' started by kling, May 12, 2012.

  1. kling

    Thread Starter New Member

    May 12, 2012
    12
    0
    Pls help!:d
     
  2. kling

    Thread Starter New Member

    May 12, 2012
    12
    0
    When it is important to take into account the op-amps input bias currents (including input offset currents) and the input offset voltage?

    Why and when is it important to know about op-amp slew rate

    Why and when is it important to know about op-amp Gain Bandwidth Product?


    HELP ME ANSWER ALL THESE QN TOO!
     
  3. bertus

    Administrator

    Apr 5, 2008
    15,649
    2,348
  4. kling

    Thread Starter New Member

    May 12, 2012
    12
    0


    Hi there,

    I still dont understand Why and when is it important to know about op-amp slew rate?

    Why and when is it important to know about op-amp Gain Bandwidth Product:rolleyes:
     
  5. kubeek

    AAC Fanatic!

    Sep 20, 2005
    4,670
    804
    Both are important anytime you´re dealing with ac signal.
     
  6. kling

    Thread Starter New Member

    May 12, 2012
    12
    0

    Like how? Got examples? :rolleyes:
     
  7. kubeek

    AAC Fanatic!

    Sep 20, 2005
    4,670
    804
    Like if you are amplifying some reference voltage for example for and AD converter, then you don´t care about bandwidth because the signal is pure DC.

    If you are amplifying AC, then even with audio frequencies gain bandwidth product and slew rate are important. For example lousy old LM741 has only 1.5MHz bandwidth, so you cannot get higher gain than 75 if you want it to pass frequencies up to 20KHz.
     
    kling and #12 like this.
Loading...