Practice Differential And Common Mode Gain (79.2.2) - Differential Amplifier : Analysis and Numerical Examples (Contd.)

Practice: Differential and Common Mode Gain

Lesson 79.2.2Differential Amplifier : Analysis and Numerical Examples (Contd.)

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8 questions

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6 questions · about 4 min · pass mark 70%. Hints available.
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2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the difference between differential mode gain and common mode gain?
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Think about the nature of the input signals.
Question 2.
What does DC Operating Point signify in an amplifier?
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Remember it's about no inputs!
3Question 3.
What does differential mode gain measure?
- The amplification of no signal
- The amplification of common input signals
- The amplification of the difference between two input signals
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Consider the primary function of a differential amplifier.
4Question 4.
True or False: Common mode gain can lead to signal distortion in an amplifier's output.
- True
- False
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Reflect on the impact of common signals on output clarity.
Question 5.
For a given BJT with a transconductance of 3mS and a collector resistance of 2 kOhms, calculate the differential mode gain.
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Follow the differential gain formula while plugging in the values.
Question 6.
Discuss how the common mode rejection ratio (CMRR) relates to the performance of a differential amplifier in noisy environments.
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Define CMRR and explore how it impacts signal clarity.

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