Practice Aim (1) - DIFFERENTIAL AMPLIFIER AND BASIC OP-AMP GAIN STAGES
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AIM

Practice - AIM

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Practice Questions

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Question 1 Easy

What does a differential amplifier do?

💡 Hint: Think about two signals and their differences.

Question 2 Easy

What is CMRR?

💡 Hint: What does the term 'rejection ratio' imply?

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the primary function of a differential amplifier?

To amplify a single input signal
To amplify the difference between two input signals
To measure resistance
To provide feedback

💡 Hint: Think about how they process two signals.

Question 2

True or False: A higher CMRR is preferable.

True
False

💡 Hint: What does CMRR stand for?

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Challenge Problems

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Challenge 1 Hard

Design a BJT differential amplifier with a target differential gain of 50. What component values would you select?

💡 Hint: Use equation A_d = -g_mR_C/2.

Challenge 2 Hard

If you measure A_cm = 0.02V and A_d = 20V/V, what is your CMRR? Discuss its implications.

💡 Hint: Don't forget to convert it to decibels!

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Reference links

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