Here, the compensation capacitor is connected to an internal low impedance node in the first stage, which allows indirect feedback of the compensation current from the output node to the internal high-impedance node i.e. the output of the first stage. The dominant pole location for the indirect compensated op-amp is same as in Miller compensation.
That means a capacitor is connected in the feedback loop to compensate the op-amp frequency response. The miller compensation circuit is shown below. In this technique, a capacitor is connected to the feedback with a resistor across the output.
The Cc capacitor is connected across the Q5 and Q10. It is the compensation Capacitor (Cc). This compensation capacitor improves the stability of the amplifier and as well as prevent the oscillation and ringing effect across the output.
The easiest way is to use out-of loop compensation technique or in-loop compensation technique. Out of the loop compensation technique uses a simple resistor to isolate the capacitive load with the op-amp, lowering the capacitive loading of the op-amp.
In the internal compensation technique, a small feedback capacitor is connected inside of the op-amp IC between the second stages Common emitter transistor. For example, the below image is the internal diagram of popular op-amp LM358. The Cc capacitor is connected across the Q5 and Q10. It is the compensation Capacitor (Cc).
The circuit is a simple negative feedback amplifier using LM393. This op-amp does not have any compensation capacitor inbuilt. We will simulate the circuit in Pspice with a 100pF of capacitive load and will check how it will perform in low and high-frequency operation.