146c5814_What_is_an_Ideal_Op_Amp___Ideal_Op_Amp
[Characteristics] Gain Independent of Frequency [Real Op Amp] In real op amps, the gain that is produced is only for a certain bandwidth of frequencies. Outside of this bandwidth, the gain that the op amp produces will decline. [Ideal Op Amp] 
In an ideal op amp, the gain that the op amp produces will be independent of frequency. This means that regardless of the frequency of the input signal going into the op amp, the gain that is produced will be constant and good across all frequencies.
What is an Ideal Op Amp?
Ideal Op Amp