Practice Lecture 80: Differential Amplifier: Analysis And Numerical Examples (contd.) (80.2)

Practice: Lecture 80: Differential Amplifier: Analysis and Numerical examples (contd.)

Lesson 80.2Differential Amplifier : Analysis and Numerical Examples (Contd.)(Part B)

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9 questions

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6 sample questions

Question 1.
What is common mode voltage?
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Think about the input terminals.
Question 2.
Explain differential mode gain in simple terms.
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What do we want to amplify?
3Question 3.
What is the common mode voltage's effect on the differential amplifier output?
- It increases output swing
- It decreases output swing
- It has no effect
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Think about saturation states.
4Question 4.
True or False: MOSFETs and BJTs have the same operating principles in differential amplifiers.
- True
- False
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Consider what controls each type of transistor.
Question 5.
Design a differential amplifier using BJTs for an application requiring high linearity. Calculate the gain, output range, and suggest strategies to minimize distortion.
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How can feedback help in maintaining the desired output?
Question 6.
Given a MOSFET circuit with V_GS = 5V, V_th = 1V, and a load of 10kΩ, calculate the output swing and common mode gain. Explain your findings.
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Use the current characteristics to see the maximum voltage drop possible.

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