Practice Conventions Of Amplifier Analysis (77.4) - Differential Amplifier : Analysis and Numerical Examples

Practice: Conventions of Amplifier Analysis

Lesson 77.4Differential Amplifier : Analysis and Numerical Examples

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9 questions

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6 sample questions

Question 1.
Define differential mode.
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What is the key characteristic of differential mode?
Question 2.
What is the output signal swing?
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Think about the maximum and minimum output levels.
3Question 3.
What is the key difference between differential mode and common mode?
- Differential mode amplifies both inputs equally.
- Common mode amplifies the difference between inputs.
- Differential mode amplifies the difference between inputs.
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Focus on their definitions.
4Question 4.
True or False: Common mode gain is always zero.
- True
- False
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Think about the conditions under which outputs can be equal.
Question 5.
Design a differential amplifier that can handle input signals of amplitudes up to 10V with a gain of 20. Calculate the necessary component values.
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Use the relationship A = R_f/R_i for feedback and input resistors.
Question 6.
Given a common mode voltage of 2V and a differential gain of 15dB, what will be the output voltage if both inputs experience the same signal?
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Use logarithmic conversions for dB if necessary.

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