Practice Numerical Examples (77.2.7) - Differential Amplifier : Analysis and Numerical Examples

Practice: Numerical Examples

Lesson 77.2.7Differential Amplifier : Analysis and Numerical Examples

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6 sample questions

Question 1.
What does a differential amplifier do?
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Think about how the amplifier processes two different inputs.
Question 2.
Name the two modes of operation for a differential amplifier.
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Recall which mode amplifies differences versus identical signals.
3Question 3.
What is the main purpose of a differential amplifier?
- To amplify the average of two signals
- To amplify the difference of two signals
- To filter noise from signals
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Focus on what differentiates it from other amplifiers.
4Question 4.
True or False: The common mode gain should be maximized for optimal amplifier performance.
- True
- False
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Consider the implications of common signals.
Question 5.
A differential amplifier has a transconductance gm of 4mS and a collector resistance Rc of 1.5k ohms. What is its differential mode gain? How would changing the collector resistance affect the output?
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Remember how resistance affects the gain calculations directly.
Question 6.
Given a scenario where a common mode signal is around 1V while the differential signal is 0.5V, analyze the performance of a differential amplifier with significant common mode gain.
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Consider the implications of high common mode gain affecting overall signal clarity.

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