Practice Differential Mode Gain (84.1.7) - Usage of current mirror (Part-B)

Practice: Differential Mode Gain

Lesson 84.1.7Usage of current mirror (Part-B)

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9 questions

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6 sample questions

Question 1.
Define differential mode gain.
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Think about how signals are compared in an amplifier setup.
Question 2.
What is the role of a current mirror?
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Consider the term 'mirror' and how it relates to current.
3Question 3.
What defines differential mode gain?
- The total voltage output
- The difference between input signals
- The average voltage output
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Focus on the action of the amplifier concerning the inputs.
4Question 4.
True or False: Current mirrors can improve common mode gain.
- True
- False
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Think about the role of current mirrors in maintaining currents.
Question 5.
Given a differential amplifier configuration with current mirrors, derive the expression for differential mode gain in terms of transconductance and load resistance.
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Recall how transconductance interacts with load resistance.
Question 6.
A differential amplifier uses a current mirror to replace a tail resistor providing a reference current. If the reference current is 2 mA, calculate the tail current for identical transistors.
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Focus on the properties of current mirrors providing equal current to their branches.

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