Question

Which of the following are non linear limitations of real op amps? 1)Limited output current magnitude 2)Limited output impedance magnitude 3)Limited rate of change of output voltage 4)Limited output voltage magnitude 5)Limited output frequency

Answer 1

Following are the non linear limitations of the real OPAMP:

1)Limited Output voltage magnitude of OPAMP: The ouput voltage of the OPAMP is limited to the maximum reference voltage. If the voltage goes beyond it clipping of the output voltage takes place

2) Limited Output Current magnitude of OPAMP: he ouput current of the OPAMP is limited. If the voltage goes beyond it clipping of the output current occurs.

3) Limited rate if change of output voltage: The rate of change of output voltage is called as Slew rate, there is limitation in OPAMP on the maximum value of slew Rate.

4) Limited output frequency : the bandwidth of OPAMP is the maximum frequency upto which OPAMP can produce sine wave ouput clearly. It is always limited due to slew rate.