Practice Finding Differential Mode Gain (75.4.1) - Differential Amplifier : Basic Structure and Principle of Operation

Practice: Finding Differential Mode Gain

Lesson 75.4.1Differential Amplifier : Basic Structure and Principle of Operation

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8 questions

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6 sample questions

Question 1.
What is differential mode gain?
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Think about the definition regarding output and input signals.
Question 2.
What does common mode gain refer to?
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Consider signals that are the same at both inputs.
3Question 3.
What is the primary function of a differential amplifier?
- To amplify a single input signal
- To amplify the difference between two signals
- To provide rectification
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Focus on the key function of the device.
4Question 4.
True or False: The ideal differential amplifier aims for both high differential mode gain and high common mode gain.
- True
- False
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Think about the characteristics discussed in class.
Question 5.
Design a differential amplifier circuit using BJTs to achieve a targeted differential mode gain of 10. Calculate the necessary component values if the output voltage is expected to be 5V.
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Use the formula Ad = Vout / Vin,d.
Question 6.
Given a common mode signal of 1V at both inputs of a differential amplifier, explain its effect on the output if the common mode gain is found to be significant.
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Consider how Ac affects unity output in common signal scenarios.

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