Practice Common Mode Gain Calculation (80.1.5) - Differential Amplifier : Analysis and Numerical Examples (Contd.)(Part B)

Practice: Common Mode Gain Calculation

Lesson 80.1.5Differential Amplifier : Analysis and Numerical Examples (Contd.)(Part B)

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10 questions

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6 sample questions

Question 1.
What is the purpose of a differential amplifier?
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Think about how it cancels common noise.
Question 2.
Define common mode gain.
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Consider the scenario of identical inputs.
3Question 3.
What is the common mode gain?
- Signal amplification that is equal for both inputs
- Amplification of only differential signal
- Negligible gain
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Think about the essence of how differential amplifiers function.
4Question 4.
Active devices improve the performance of a differential amplifier.
- True
- False
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Consider how these devices work in circuits.
Question 5.
Calculate the common mode gain if the parameters are g_m = 3 mS, R = 100 kΩ, and r_o = 25 kΩ.
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Break it down step by step to solve.
Question 6.
Discuss how the combined use of BJTs and MOSFETs could optimize performance in a specific application.
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Reflect on their individual strengths and how they complement each other.

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