Practice Output Resistance And Non-ideality Factor (82.1.3) - Current mirror circuits (Part-B)

Practice: Output Resistance and Non-Ideality Factor

Lesson 82.1.3Current mirror circuits (Part-B)

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9 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the primary function of a current mirror?
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Think about how circuit stability is maintained.
Question 2.
Define output resistance in the context of a current mirror.
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Why is this stability important?
3Question 3.
What is the primary purpose of a current mirror?
- To amplify a signal
- To provide a stable output current
- To act as a voltage regulator
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Think about what current mirrors are used for in circuits.
4Question 4.
True or False: The non-ideality factor is always greater than 1.
- True
- False
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Reflect on how voltage differences influence this factor.
Question 5.
Given a current mirror design using MOSFETs with stated λ, calculate the output current if the reference current is 100 μA and the drain-source voltages are 0.2V apart.
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Review the expression for output current.
Question 6.
In a BJT current mirror, if the base current is significant, how do you derive the relationship between I2 and I1 accounting for base losses?
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Try to express the base currents in terms of I2 and I1.

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