Ideal vs. Nonideal Op Amps
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Ideal | Nonideal |
---|---|
Infinite input impedance | Input impedance of about 1M <math>\Omega for IC op amps; as much as 10 12<math>\Omegafor op amps with field effect transistor |
Infinite open-loop gain for the differential signal | Open-loop gain typically between 104and 106 |
Zero gain for the common-mode signal | Poop |
Zero output impedance | Output impedance typically between 1 and 100 <math>\Omega |
Infinite bandwidth | beat up books |