Practice Small Signal Analysis (32.1.7) - Common Source Amplifier (Part A)

Practice: Small Signal Analysis

Lesson 32.1.7Common Source Amplifier (Part A)

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8 questions

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6 sample questions

Question 1.
What is the function of the common source amplifier?
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Think about what an amplifier does.
Question 2.
Why do we use DC biasing in MOSFETs?
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Consider the role of biasing.
3Question 3.
What is the main function of a common source amplifier?
- Current amplification
- Voltage amplification
- Power amplification
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Consider what is commonly amplified in analog circuits.
4Question 4.
True or False: AC signals affect the DC bias in a common source amplifier circuit.
- True
- False
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Review the role of biasing.
Question 5.
A common source amplifier has a transconductance of 1.5mS and is biased at 2V. For an input signal of 4V, find the output current when the threshold voltage is 1.5V.
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Use the small signal current equation discussed.
Question 6.
Design a common source amplifier circuit using an N-channel MOSFET to achieve a voltage gain of 10 while ensuring the MOSFET operates in the saturation region. Specify appropriate values for resistances.
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Consider the resistor values that could yield a gain of 10 while respecting DC bias calculations.

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