78.2.2 - Small Signal Equivalent Circuit Analysis
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Practice Questions
Test your understanding with targeted questions
Define common mode signal.
💡 Hint: Think about how identical signals affect the output.
What does differential mode signal refer to?
💡 Hint: Consider one signal being positive and the other negative.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the main purpose of common mode analysis?
💡 Hint: Think about what we learned regarding unwanted noise.
True or False: The differential gain is independent of common mode signals.
💡 Hint: Consider the definitions of both gains.
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Challenge Problems
Push your limits with advanced challenges
Given a differential amplifier with resistors that are not equal, derive an expression for the output voltage when both a common mode and differential signal are applied.
💡 Hint: You may need to consider the resistor effects on the overall gain.
Evaluate the effects of common mode rejection ratio (CMRR) on the overall functionality of an amplifier if the CMRR is low.
💡 Hint: Look back at the definitions and principles you learned regarding signal integrity.
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