The first dominant pole encountered in the frequency response of a compensated op-amp is approximately at

a) 5 Hz

b) 10 KHz

c) 1 MHz

d) 100 MHz

Ans ; 5 Hz

Op amps require compensation to ensure closed loop stability. Compensation

for CMOS op amps is more difficult when there is significant phase shift due to the

large capacitive load.  the “pole splitting” frequency compensation method

As the transistor gain of the second stage increases, the dominant pole frequency

decreases and the nondominant pole location increases. In this way the two poles

are being split apart and stabilize the feedback amplifiers by greatly narrowing the

bandwidth. Miller compensation is popular for op amp design because of its simplicity