Practice Signal Feeding And Output Analysis (76.1.3) - Differential Amplifier : Basic Structure and Principle of Operation (Contd.)

Practice: Signal Feeding and Output Analysis

Lesson 76.1.3Differential Amplifier : Basic Structure and Principle of Operation (Contd.)

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9 questions

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6 sample questions

Question 1.
What role does the tail resistor play in a differential amplifier?
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Consider how biasing affects transistor operation.
Question 2.
What happens to the output signal if the input V_in1 is greater than V_in2?
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Think about the output phase in relation to input.
3Question 3.
What is the role of the tail resistor in a differential amplifier?
- It connects the output.
- It provides biasing for the transistors.
- It acts as a signal input.
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Consider the importance of stability in operations.
4Question 4.
In which scenario would you expect higher differential gain?
- True
- False
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Think about the phase relationship of inputs.
Question 5.
You are designing a differential amplifier with a target differential gain of 100. If you have a resistor of 2kΩ, what must the transconductance (g_m) be?
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Think about rearranging the gain formula to isolate g_m.
Question 6.
A BJT differential amplifier outputs an inverted signal of -5V when inputs of +2V and -2V are applied. Determine the common mode gain if both input signals were adjusted to +2V.
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Evaluate the characteristics of identical input signals.

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