op amp question

Discussion in 'Homework Help' started by prescott2006, Oct 20, 2009.

  1. prescott2006

    Thread Starter Active Member

    Nov 8, 2008
    i am doing 1 question on op amp design.it is a differential amplifier connect in common mode.all value of resistor are given except feedback resistor,then it ask "complete the design by choosing a feedback resistor such that output will not be affected by the common mode output."
    i not sure what this statement mean.anyone can help me?:confused:
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    Perhaps you could post a copy of the question in detail. It would help in solving the problem.