Ideal vs. Nonideal Op Amps

Ideal	Nonideal
Infinite input impedance	Input impedance of about 1M Ω for IC op amps; as much as 10 12Ω for op amps with field effect transistor
Infinite open-loop gain for the differential signal	Open-loop gain typically between 104and 106
Zero output impedance	Output impedance typically between 1 and 100 Ω
Infinite bandwidth	Bandwidth typically limited by the designer to avoid oscillation

References

Electronics, Second Edition. Allan R. Hambley.

Chapter 1 - Greg Fong

Reviewers

• Henry,Ben

• Vier, Michael