(a) An inverting amplifier uses an op-amp with an open-loop 3 dB frequency of 5 Hz. The closed-loop low-frequency gain is to be |Av f | = 75 and the closed-loop bandwidth is to be 35 kHz.
(i) What is the required value of the open-loop low-frequency gain?
(ii) Determine the feedback transfer function β.
(b) Using the results of part (a), what is the closed-loop bandwidth and closed-loop low-frequency gain if the open-loop lowfrequency gain decreases by 10 percent?