An ideal op amp has infinite voltage gain and bandwidth. A practical op-amp falls short of these ideal standards. Given below are the characteristic features of the ideal op-amp.
- Voltage gain: The voltage gain of an ideal op amp is infinite voltage gain.
- Bandwidth: The voltage gain of an ideal operational amplifier is infinite.
- Input impedance: The input impedance of the ideal op amp is infinite so as to not load the driving source
- Output impedance: The output impedance of op-amp is zero
The figure below shown as an ideal operational amplifier.
The input voltage Vin appears between the two input terminals while the output voltage is AvVin.