Practice Active Devices For Enhanced Performance (75.5.3) - Differential Amplifier : Basic Structure and Principle of Operation

Practice: Active Devices for Enhanced Performance

Lesson 75.5.3Differential Amplifier : Basic Structure and Principle of Operation

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9 questions

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6 sample questions

Question 1.
What does a differential amplifier amplify?
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Think about what is fed into the amplifier.
Question 2.
Name one type of active device used in differential amplifiers.
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Consider the components that can control current or voltage.
3Question 3.
What is the primary function of a differential amplifier?
- To amplify a single input signal
- To amplify the difference between two input signals
- To reduce signal noise
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Remember what we discussed at the beginning about amplification.
4Question 4.
True or False: Differential mode gain should be as low as possible in a well-functioning amplifier.
- True
- False
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Think about the goals of an amplifier.
Question 5.
A differential amplifier has a differential mode gain of 25 and a common mode gain of 2. If both inputs receive a common signal of 1V, what will the outputs be?
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Use A_d and A_c in conjunction with the input signals.
Question 6.
Design a conceptual circuit diagram for a differential amplifier using BJTs. Describe the components needed and their placements.
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Map out the path data follows through the circuit.

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