You are given an opamp that may be modeled as in Fig. 5.16 with , , and . a. The opamp is used within the unity-gain buffer in Fig. 5.18. Find the exact dc gain, approximate phase margin and...

You are given an opamp that may be modeled as in Fig. 5.16 with , , and .

a. The opamp is used within the unity-gain buffer in Fig. 5.18. Find the exact dc gain, approximate phase margin and closed-loop bandwidth.

b. Now, the opamp is placed within the larger feedback loop depicted in Fig. P5.16(a). What is the dc gain and approximate phase margin?

c. A capacitor, , is inserted as shown in Fig. P5.16(b). What value is required to provide a phase margin of ? What is the resulting bandwidth?

d. Repeat part (c), but this time with the capacitor inserted as shown in Fig. P5.16(c).