146c5814_What_is_an_Ideal_Op_Amp___Ideal_Op_Amp
[Characteristics] Infinite Voltage Gain [Real Op Amp] A real op amp can only produce a finite gain. [Ideal Op Amp] 
An ideal op amp will have infinite voltage gain. Op amps are devices that many times are used to function as amplifiers. A voltage is input into the op amp and as output, it produces the voltage amplified. An ideal op amp will produce mega-gain, practically, it will be able to produce infinite gain. It will amplify the signal infinite times over so that we can have as much gain as we'd ever need.
What is an Ideal Op Amp?
Ideal Op Amp