An op amp with open-loop voltage gain of 105 and poles at 106 Hz, 107 Hz, and 108 Hz is to be compensated by the addition of a fourth dominant pole to operate stably with unity feedback (β = 1). What is the frequency of the required dominant pole? The compensation network is to consist of an RC low-pass network placed in the negative-feedback path of the op amp. The dc bias conditions are such that a 1-MΩ resistor can be tolerated in series with each of the negative and positive input terminals. What capacitor is required between the negative input and ground to implement the required fourth pole?