Question

Notify Me Bookmark

The technological parameters are μnCox = 4μpCox = 40 μA/V2, ∣γ∣ = 0.5 V1/2, 2ϕf = 0.5 V, λ = 0.02 V−1, Vtno = 0.6 V, and Vtpo = −0.8 V. Considering the CMOS inverter shown in the figure below, (W/L)n = 1/4, (W/L)p = 1, and VDD = 3.3 V. Find (1) expression of Δt = t2−t1, using the integral method, (2) if C = 40 fF, the value of Δt = t2−t1, using the average current method, and (3) based on the result obtained in (2), determine the duration of T and the switching power dissipated in the inverter.

The technological parameters are μnCox = 4μpCox = 40 μA/V2, ∣γ∣ = 0.5 V1/2, 2ϕf = 0.5 V, λ = 0.02 V−1, Vtno = 0.6 V, and Vtpo = −0.8 V. Considering the CMOS inverter shown in the figure below, (W/L)n = 1/4, (W/L)p = 1, and VDD = 3.3 V. Find (1) expression of Δt = t2−t1, using the integral method, (2) if C = 40 fF, the value of Δt = t2−t1, using the average current method, and (3) based on the result obtained in (2), determine the duration of T and the switching power dissipated in the inverter.

The technological parameters are μnCox = 4μpCox = 40 μA/V2, ∣γ∣ = 0.5 V1/2, 2ϕf = 0.5 V, λ = 0.02 V−1, Vtno = 0.6 V, and Vtpo = −0.8 V. Considering the CMOS inverter shown in the figure below, (W/L)n = 1/4, (W/L)p = 1, and VDD = 3.3 V. Find (1) expression of Δt = t2−t1, using the integral method, (2) if C = 40 fF, the value of Δt = t2−t1, using the average current method, and (3) based on the result obtained in (2), determine the duration of T and the switching power dissipated in the inverter.

Image text
The technological parameters are μnCox = 4μpCox = 40 μA/V2, ∣γ∣ = 0.5 V1/2, 2ϕf = 0.5 V, λ = 0.02 V−1, Vtno = 0.6 V, and Vtpo = −0.8 V. Considering the CMOS inverter shown in the figure below, (W/L)n = 1/4, (W/L)p = 1, and VDD = 3.3 V. Find (1) expression of Δt = t2−t1, using the integral method, (2) if C = 40 fF, the value of Δt = t2−t1, using the average current method, and (3) based on the result obtained in (2), determine the duration of T and the switching power dissipated in the inverter.

Detailed Answer

1 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:
  • (1)

Similar/Related Questions

Considering the CMOS inverter shown in the figure below, (W/L)n = 1/4, (W/L)p = 1, and VDD = 3.3 V. Find (1) expression of Δt = t2−t1, using the integral method, (2) if C = 40 fF, the value of Δt = t2−t1, using the average current method, and (3) based on the result obtained in (2), determine the duration of T and the switching power dissipated in the inverter.

 
Solution
1 0

Q1. Consider the CMOS inverter of which the transistors have the following parameters: μnCox = 4μpCox = 160 μA/V2, ∣γ| = 0.5 V1/2, 2Φf = 0.5 V, λ = 0.001 V−1, Vtno = 0.6 V, Vtpo = −0.8 V, (W/L)n = 1 and (W/L)p = 4. The supply voltage VDD = 3.3 V. The capacitive load at the output node is 20 pF. The input voltage Vin is expected to be a perfect periodic square wave with full swing (low level : 0 V, high level: VDD). (a) Calculate tl, the time required for the output voltage Vout to change from 0 V to the threshold voltage of the inverter, using the average-current method. (b) Write the expression of calculation of t2, the time required for the output voltage Vout to change from 2.9 V to the 0.4 V, using the analytical method (integral). Then calculate t2 using the average-current method. (c) Determine the maximum frequency of the periodic square wave input so that the output signal will have a full swing in each cycle. (d) Calculate the peak value of in, the NMOS transistor current, during the transition, and its average value over a clock cycle T. (The average value here is not the same as the average-current in the "average-current method" for delay estimation) (e) If the capacitive load is now changed to be 250 pF, what can be done to make tl and t2 unchanged?
Solution
0 0

Consider a pseudo-NMOS gate shown in the figure, VDD = 3.3 V and all the transistors are sized 1/1. Find (1) the logic function implemented, (2) VOH and VOL, and (3) tpHL and tpLH if the capacitance at the output note is 50 fF. tpHL is the time required for Vo to change from VOH to 0.5 VDD and the tpLH is the time required for VO to change from VOL to 0.5 VDD The technological parameters are μnCox = 4 μpCox = 160 μA/V2, |γ| = 0.5 V1 /2, 2ϕf = 0.5 V, λ = 0.001 V−1, Vtno = 0.6 V, and Vtpo = −0.8 V.

Solution
0 0