When an op amp includes one dominant bypass capacitor that rolls off the voltage gain at a rate of 20 dB per decade,it means the op amp is
A) operating as an open-loop.
B) externally compensated.
C) internally compensated.
D) operating as a closed-loop.

Question

Quizplus · Accepted Answer

An op amp with one dominant bypass capacitor that rolls off the voltage gain at a rate of 20 dB per decade is internally compensated. This is because internal compensation is achieved using a dominant pole in the frequency response, where a single capacitor is used to set the pole frequency. This dominant pole limits the bandwidth of the op amp and makes it stable when used in a closed-loop configuration.

When an Op Amp Includes One Dominant Bypass Capacitor That