Consider the circuit shown in Fig. 4.50. (a) If IS1 = 2IS2 = 5 × 10-16 A, determine VB such that IX = 1.2 mA. (b) What value of RC places the transistors at the edge of the active mode?
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![Q6. For the amplifier circuit shown in Fig. Q6, the MOS Transistor Ml has the following parameters: Kn = 1 mAV−2, and VTHN = 1 V. MOS transistors M2 and M3 are identical and have the following parameters: Kp = 1 mAV−2, and VTHP = −1 V. Fig. Q6 (a) Perform the DC analysis of the amplifier circuit shown in Fig. Q6, and show that the DC gate voltage of Ml is 5 V. You need to explain briefly your answer. (b) Calculate the value of RS such that the drain current of MI is 4 mA. Verify that the Ml is operating in the saturation region. [ Ans: Rs = 0.5 kΩ] (c) Calculate the parameters, gm and ro, of the small-signal model of the transistor Ml. [Ans: gm, M1 = 4 mAV−1, and ro, M1 = ∞ ] (d) What is the configuration of this amplifier? (e) Calculate the values of Rin , and Rout . [Ans: Rin = 5 kΩ and Rout = 2 kΩ ] (f) Estimate the voltage gain, Av( = vout /vin ). [ Ans: AV = −1.78]](https://www.doubtrix.com/uploads/editor/9864219624emwVzDjyOi.png)
