O Amp-Op Ideal

The Ideal Op-amp

The IC Op-amp comes so close to ideal performance that it is useful to state the characteristics of an ideal amplifier without regard to what is inside the package.

Infinite voltage gain Infinite input impedance Zero output impedance Infinite bandwidth Zero input offset voltage (i.e., exactly zero out if zero in).

Compare to real op-amps Practical departures from ideal op-amp

These characteristics lead to the golden rules for op-amps. They allow you to logically deduce the operation of any op-amp circuit.