Question

Notify Me Bookmark

In the Cascode stage of the figure given below, assume that (W/L)1 = 50/0.5, (W/L)2 = 10/0.5, ID1 = ID2 = 0.5 mA and RD = 1 kΩ (a) Choose Vb such that M1 is 50 mV away from the triode region. (b) Calculate the small-signal voltage gain.

In the Cascode stage of the figure given below, assume that (W/L)1 = 50/0.5, (W/L)2 = 10/0.5, ID1 = ID2 = 0.5 mA and RD = 1 kΩ (a) Choose Vb such that M1 is 50 mV away from the triode region. (b) Calculate the small-signal voltage gain.

Image text
In the Cascode stage of the figure given below, assume that (W/L)1 = 50/0.5, (W/L)2 = 10/0.5, ID1 = ID2 = 0.5 mA and RD = 1 kΩ (a) Choose Vb such that M1 is 50 mV away from the triode region. (b) Calculate the small-signal voltage gain.

Detailed Answer

3 0

Please enter your email here. You will get email when this question is answered by our tutor.

Answer
Doubtrix Logo

This Problem has been solved!

You'll get a detailed, step-by-step and expert verified solution.

Join Doubtrix with 7-days free trial

  • Icon Correct & Verified Answers
  • Icon No AI-Generated Answers
  • Icon Video Solution for Difficult Questions
  • Icon Work With Experts to Reach at Correct Answers
Login Sign Up
  • Student Reviews:
  • (3)
  • Correct answers (3)
  • Complete solution (3)
  • Step-by-step solution (3)
  • Fully explained (3)

Similar/Related Questions

In the cascode stage of the below figure, take (W/L)1 = 50/0.5, (W/L)2 = 10/0.5, ID1 = 0.5 mA and RD = 1 kΩ. (a) Choose Vb such that M1 is 50 mV away from the triode region. (b) Calculate the small-signal voltage gain. (c) Calculate the maximum output voltage swing. Which device enters the triode region first as Vout falls? Calculate the swing at node X for the maximum output swing obtained below. In the cascode stage of Fig. 3.59, assume that (W/L)1 = 50 /0.5, (W/L)2 = 10 /0.5, ID1 = ID2 = 0.5 mA, and RD = 1 kΩ. (a) Choose Vb such that M1 is 50 mV away from the triode region. (b) Calculate the small-signal voltage gain. (c) Using the value of Vb found in part (a), calculate the maximum output voltage swing. Which device enters the triode region first as Vout falls? (d) Calculate the swing at node X for the maximum output swing obtained above. Figure 3.59 Cascode stage.

Solution
0 0

In the cascode stage of Fig. 3 , assume that (W/L)1 = 50/0.5, (W/L)2 = 10/0.5, ID1 = ID2 = 0.5 mA, and RD = 1 kΩ. Use λ = γ = 0 for bias purpose and γ = 0, λ ≠ 0 for small signal analysis. (a) Choose Vb such that VDS of M1 is 50 mV away from the triode region. (2.5%) (b) Calculate the small-signal voltage gain Av = Vout Vin ⋅(2.5%) (c) Calculate the maximum output voltage swing using the value of Vb found in part (a). Which device enters the triode region first as Vout falls? (2.5%) (d) Calculate the swing at node X for the maximum output swing obtained above. (2.5%) Figure 3
Solution
4 0

(a) Choose VB such that M1 is 300mV away from the triode region (VDS1 = VGS1-VTH1+300mV; M1 and M2 operate in Saturation region). (b) Calculate the small-signal voltage gain (VOUT/VIN). (c) Assume VB = 1.43 V, calculate the maximum output voltage swing to keep all transistors in saturation. Neglect channel length modulation. (d) Assume the maximum output swing is VOUT = 2.23 VPP, Calculate the swing at node X. In Fig. 2, assume (W/L)1 = 12 μm/0.18 μm, (W/L)2 = 24 μm/0.36 μm, ID1 = ID2 = 0.5 mA, and RD = 2 kΩ, VTH,N = 0.5 V, μnCox = 150 μA/V2, VDD = 3.3 V, λn = 0.1 V-1. Neglect body effect. Neglect channel length modulation except doing output impedance calculation.
Solution
5 0