Question

Notify Me Bookmark

13.40. (a) What are the Q-points for the transistors in the amplifier in Fig. P13.40. if VDD = 15 V, VSS = 15 V, RSS = 51 kΩ, and RD = 82 kΩ? Assume Kp = 200 μA/V2 and VTP = −1 V. (b) What are the differential-mode gain, common-mode gain, CMRR, and differential-mode and common-mode input resistances?

13.40. (a) What are the Q-points for the transistors in the amplifier in Fig. P13.40. if VDD = 15 V, VSS = 15 V, RSS = 51 kΩ, and RD = 82 kΩ? Assume Kp = 200 μA/V2 and VTP = −1 V. (b) What are the differential-mode gain, common-mode gain, CMRR, and differential-mode and common-mode input resistances?

Image text
13.40. (a) What are the Q-points for the transistors in the amplifier in Fig. P13.40. if V D D = 15 V , V S S = 15 V , R S S = 51 k Ω , and R D = 82 k Ω ? Assume K p = 200 μ A / V 2 and V T P = − 1 V . (b) What are the differential-mode gain, common-mode gain, CMRR, and differential-mode and common-mode input resistances?

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

Figure Q2 shows a BJT differential amplifier stage that uses a tail resistor, RO, to provide a bias current, IQ. Transistor parameters are VBE(on) = 0.7 V, β = 100, and VA = ∞. Also, Vcc = 15 V, −VEE = −15 V, RO = 56 kΩ, and RC = 15 kΩ. Figure Q2: Differential Amplifier (a) To calculate the transistor Q-points, what are the values you would assume for vB1 and vB2 ? (b) Determine the bias currents, IC1 and IC2, of the amplifier. (c) For a single-sided output, determine the differential-mode voltage gain (Ad), the commonmode voltage gain (Acm), the differential input impedance (Rid), the common-mode input impedance (Ricm), and the common-mode rejection ratio (CMRR) in dB for the differential amplifier. Assume a signal source resistance of 50 Ω on each input. (d) Will changing RC affect the amplifier CMRR? (e) Suggest two changes to this amplifier each of which would allow the CMRR to be increased. For each, give a reason why the change would have the desired effect.

Solution
0 0

*13.46. (a) Draw the differential-mode and common-mode half-circuits for the differential amplifier in Fig. P13.46. . (b) Use the half-circuits to find the Q-points, differential-mode gain, common-mode gain, and differential-mode input resistance for the amplifier if β0 = 150, VCC = 20 V, VEE = 20 V, REE = 100 kΩ, R1 = 1.6 kΩ, and RC = 100 kΩ.
Solution
1 0

In Figure 5, RI = 200 Ω, RS = 70 kΩ, RL = 200 kΩ, RD = 50 kΩ and VDD = VSS = 15 V. Kp = 200 μA/V2, VTP = −1 V and λ = 0.02 V−1. Calculate the Q-point of this amplifier VSD = V, ID = mA. Figure 5. VSD = V ID = mA
Solution
0 0