Basic Op Amp Function

 

1) If (inverting input) > (non-inverting input) output saturates towards -Vss

2) If (inverting input) < (non-inverting input) output saturates towards +Vss

3) Without feedback maximum saturation occurs with the slightest difference between inputs.

4) Ideal op-amp has infinite impedance on the inputs, infinite gain, and zero resistance on output.

5) In real life gain is limited to voltage present at +Vss/-Vss

6) For practical purposes there is no current flow from the inputs to the outputs. The input voltage serves only as a reference to control the output.

 

 

 

 

 

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