Operational Amplifiers Ideal Parameters

Ideal Parameter Descriptions

Bandwidth: The range of frequencies over which the op amp can amplify signals without significant loss of gain. Ideally, an op amp has infinite bandwidth, meaning it can amplify signals of any frequency equally well.

Open Loop Voltage Gain: The amplification provided by the op amp when no feedback is used (open loop). Ideally, this gain is infinite, allowing the op amp to amplify even the smallest difference between its input terminals.

Input Impedance: The resistance seen by the signal source at the op amp’s input terminals. Ideally, this is infinite, ensuring that the op amp draws no current from the input source and does not affect the input signal.

Output Impedance: The resistance seen by the load connected to the op amp’s output. Ideally, this is zero, allowing the op amp to deliver any amount of current to the load without voltage drop.

Input Offset Voltage: The differential DC voltage required between the input terminals to make the output zero. Ideally, this is zero, meaning the output is exactly zero when the inputs are equal.

Input Bias Current: The average of the DC currents entering the inverting and non-inverting input terminals. Ideally, this is zero, meaning no current flows into the input terminals.