Practice Discussion (6.4.1) - DIFFERENTIAL AMPLIFIER AND BASIC OP-AMP GAIN STAGES
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Practice Questions

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Question 1 Easy

What is the primary function of a differential amplifier?

💡 Hint: Think about what it does in comparison to regular amplification.

Question 2 Easy

Define CMRR.

💡 Hint: Remember, it deals with unwanted signals.

4 more questions available

Interactive Quizzes

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Question 1

What is the purpose of a differential amplifier?

To amplify a single voltage
To amplify the difference between two voltages
To reject all signals

💡 Hint: Think about what it focuses on!

Question 2

True or False: CMRR increases with higher common-mode gain.

True
False

💡 Hint: Recall the implications of common-mode gain!

1 more question available

Challenge Problems

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Challenge 1 Hard

You design a differential amplifier with R_C values of 4.7 kΩ and a total DC supply of 30V. If the measured output at max input swing is observed to be 18V, calculate the theoretical differential gain.

💡 Hint: Remember to consider the measured values carefully.

Challenge 2 Hard

Consider an Op-Amp circuit designed with R_in = 1 kΩ and R_f = 10 kΩ. Calculate the gain and determine the significance of the phase difference observed.

💡 Hint: Reflect on phase as a key aspect of how outputs behave relative to inputs!

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