Practice Summary And Conclusion (76.1.7) - Differential Amplifier : Basic Structure and Principle of Operation (Contd.)

Practice: Summary and Conclusion

Lesson 76.1.7Differential Amplifier : Basic Structure and Principle of Operation (Contd.)

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9 questions

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6 sample questions

Question 1.
What does differential mode gain represent?
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Focus on the word 'difference'.
Question 2.
True or False: Common mode gain should be high for effective operation.
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Consider why we don't want amplification on common signals.
3Question 3.
What is the key function of a differential amplifier?
- To amplify common signals
- To amplify the difference between signals
- To short circuit signals
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Think about what the amplifier is designed to do!
4Question 4.
True or False: A high common mode gain is desirable.
- True
- False
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Recall the implications of common signals.
Question 5.
You have a differential amplifier with a transconductance of 5 mS and a load resistance of 2 kΩ. Calculate the differential mode gain.
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Remember the gain formula: A = gm * Rc.
Question 6.
Explain how you would design a differential amplifier circuit to minimize common mode gain.
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Think about how high resistances can affect signal paths.

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