70.4.2 - Small Signal Model of Differential Amplifier
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
Define a differential signal.
💡 Hint: Think about how the signal responds based on the comparison of its two inputs.
What is common mode gain?
💡 Hint: Consider how noise affects both inputs similarly.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary function of a differential amplifier?
💡 Hint: Focus on what makes differential amplifiers unique.
True or False: Common mode signals are undesirable in differential circuit applications.
💡 Hint: Consider the impact of noise in circuit performance.
1 more question available
Challenge Problems
Push your limits with advanced challenges
You have a differential amplifier with two inputs, one at 3V and the other at 1V. If the common-mode gain is 1, what would the output voltage when the common mode signal is 0.5V?
💡 Hint: Break the equation down into its components.
Describe how you would analyze a differential amplifier implementing the small signal approximation directly using Kirchhoff's laws.
💡 Hint: Start with a single input and trace current paths through the circuit.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.