Practice Differential And Common Mode Input Signals (77.4.2) - Differential Amplifier : Analysis and Numerical Examples

Practice: Differential and Common Mode Input Signals

Lesson 77.4.2Differential Amplifier : Analysis and Numerical Examples

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9 questions

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6 sample questions

Question 1.
What is the main function of a differential amplifier?
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Think about why we use differential amplifiers in noisy environments.
Question 2.
Define common mode input signals.
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Focus on the definition of the term 'common'.
3Question 3.
What does a differential amplifier do?
- Amplifies the same signal
- Amplifies the difference between two signals
- Does nothing
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Think of differential amplifiers used in audio and instrumentation.
4Question 4.
Common mode signals are applied to:
- True
- False
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Remember the definition of common mode inputs.
Question 5.
A differential amplifier has a differential gain of 15, and the input signals are 1V and 4V. Calculate the output voltage.
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Use the gain formula with differential inputs.
Question 6.
If a common mode rejection ratio is low, discuss the impact on signal integrity in a circuit.
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Think about the importance of noise in data acquisition.

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