申論題

1. (15%) Figure 1 shows the inverting configuration voltage amplifier with R = 1 kΩ. (a) Please find the close loop gain of V_o/V_I if the operational amplifier (op amp) is ideal. (b) Please find the close loop gain of V_o/V_I  if the open loop gain of op amp is 10 V/V. (c) If the op amp is a low-pass STC withT , please find the high frequency close loop gain of V_o/V_I at f= 1 GHz. (5%, 5%, 5%)