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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the main function of a BJT differential amplifier?
💡 Hint: Think about how it processes input signals.
Question 2
Easy
Define Common Mode Rejection Ratio (CMRR).
💡 Hint: Consider its importance in signal processing.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the preferred output configuration for measuring gain in a BJT differential amplifier?
- Single-ended
- Differential
- Common-mode
💡 Hint: Think about the output options you have.
Question 2
True or False: A common-mode gain should ideally be high for a differential amplifier to function correctly.
- True
- False
💡 Hint: Reflect on the purpose of differential amplifiers.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You design a differential amplifier with a desired CMRR of 80 dB. If the differential voltage gain is measured at 100, calculate the common-mode gain.
💡 Hint: Use the CMRR formula given earlier.
Question 2
For a BJT differential amplifier employing a resistor as a current source, derive the common-mode gain if both transistors are perfectly matched.
💡 Hint: Work through the derivation from the paragraph on common-mode gain.
Challenge and get performance evaluation