Question

Notify Me Bookmark

Consider the common-source amplifier shown. The NMOS transistor has KP = 50 μA/V2, Vto = 2 V, λ = 0, L = 10 μm, and W = 400 μm. Find the midband voltage gain, input resistance, and output resistance of the amplifier. If the input source is given by v(t) = 100 sin⁡(2000 Πt)mV compute the output voltage. Assume that the frequency of the source (which is 1000 Hz ) is in the midband region.

Consider the common-source amplifier shown. The NMOS transistor has KP = 50 μA/V2, Vto = 2 V, λ = 0, L = 10 μm, and W = 400 μm. Find the midband voltage gain, input resistance, and output resistance of the amplifier. If the input source is given by v(t) = 100 sin⁡(2000 Πt)mV compute the output voltage. Assume that the frequency of the source (which is 1000 Hz ) is in the midband region.

Image text
Consider the common-source amplifier shown. The NMOS transistor has K P = 50 μ A / V 2 , V t 0 = 2 V , λ = 0 , L = 10 μ m , and W = 400 μ m . Find the midband voltage gain, input resistance, and output resistance of the amplifier. If the input source is given by v ( t ) = 100 sin ⁡ ( 2000 Π t ) m V compute the output voltage. Assume that the frequency of the source (which is 1000 H z ) is in the midband region.

Detailed Answer

0 0

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

Doubtrix Logo

Problem is not yet solved!

Click on Notify me to get email when question is answered.

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
Notify me Login Sign Up

Similar/Related Questions

P11.52. Consider the amplifier shown in Figure P11.52. a. Draw the small-signal equivalent circuit, assuming that the capacitors are short circuits for the signal. b. Assume that rd = ∞, and derive expressions for the voltage gain, input resistance, and output resistance. c. Find IDQ if R = 100 kΩ, Rf = 100 kΩ, RD = 3 kΩ, RL = 10 kΩ, VDD = 20 V, Vto = 5 V, and K = 1 mA/V2. Determine the value of gm at the Q point. d. Evaluate the expressions found in part (b) by using the values given in part (c). e. Find vo(t) if v(t) = 0.2 sin⁡(2000πt). f. Is this amplifier inverting or noninverting? Figure P11.52
Solution
0 0

Circuit diagrams of six different single-stage common-source amplifiers. In the circuits Vdd = 5 V, (W/L)1 = 100, (W/L)2 = 25, Vb = 2 V, RD = 500 Ω, RS = 100 Ω, Vin = 3 + 0.01sin⁡(2000πt + 90∘)V. (a) Find out the bias points (DC node voltages and branch currents) of the circuits. If any of the transistors are not in the expected region of operation, modify the circuits by changing the aspect ratios of the transistors for the proper functionality. (b) Calculate the small signal gain, input resistance, and output resistance of the circuits. (c) Plot Vin and Vout for 3 ms and neatly label it. (d) Calculate Vout , max and Vout , min , and hence the maximum output voltage swing of the amplifiers. Using this find out what is maximum allowable input voltage swing. By changing the aspect ratios of the transistors, can you obtain the maximum possible voltage swing? (e) Can you increase the gain of the amplifiers by a factor of 2 just by changing the aspect ratios of the transistors? (f) Repeat (a)-(e) assuming the second order effects are present in the transistors.

Solution
0 0

Part A Consider the source follower shown in the figure below (Figure 1). Suppose that VDD = 15 V, RL = 2 kΩ, R1 = 1 MΩ, and R2 = 2 MΩ. The NMOS transistor has KP = 40 μA/V2, L = 20 μm, W = 150 μm, rd = ∞, and Vto = 2 V. The NMOS transistor has KP = 40 μA/V2, L = 20 μm, W = 150 μm, rd = ∞, and Vto = 2 V. Figure 1 of 1 Find the value for RS to achieve IDQ = 2mA. Express your answer to three significant figures and include the appropriate units. ) Submit Previous Answers Request Answer Part B Find the voltage gain. Express your answer using three significant figures. Submit Previous Answers Request Answer Part C Find the input resistance. Express your answer to three significant figures and include the appropriate units. Submit Request Answer Part D Find the output resistance. Express your answer to three significant figures and include the appropriate units.
Solution
0 0