A voltage follower feedback circuit is shown in Fig 8 58 For the MOS transistor, I D 0 5 mA, k 180 micro A V 2 , r o , W L 100, Iuml f 0 3 V, and Icirc sup3 0 3 V 1 2 For the op amp, assume that R i 1 M Icirc copy , R o 10 k Icirc copy , and a v 1,000 Calculate input resistance, output resistance, loop transmission, and closed loop gain (a) Using the formulas from two port analysis (Section 8 5) (b) Using the formulas from return ratio analysis (Section 8 8) Fig 8 58 VDD V Ip V

Question: A voltage-follower feedback circuit is shown in Fig. 8.58. For the MOS transistor, I D = 0.5 mA, k = 180 µA/V 2 , r

A voltage-follower feedback circuit is shown in Fig. 8.58. For the MOS transistor, I_D= 0.5 mA, k€™ = 180 µA/V², r_o= ˆž, W/L = 100, |Ï•_f| = 0.3 V, and Î³ = 0.3 V^1/2. For the op amp, assume that R_i=1 MÎ©, R_o= 10 kÎ©, and a_v= 1,000. Calculate input resistance, output resistance, loop transmission, and closed-loop gain:

(a) Using the formulas from two-port analysis (Section 8.5).

(b) Using the formulas from return-ratio analysis (Section 8.8).

Fig. 8.58:

VDD Vị Ip V.

VDD V Ip V.

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