The compensated open-loop response is indicated in Fig. 10.44. It has four
poles: at fD, fP1, fP2, and fP3. Thus begins to roll off with a slope of −20 dB/decade at fD.
At fP1 the slope changes to – 40 dB/decade, at fP2 it changes to –60 dB/decade, and so on.
Since the 20 log(1/β ) line intersects the curve at point Y on the −20-dB/decade
segment, the closed-loop amplifier with this β value (or lower values) will be stable.