86.2.1 - Simple Current Mirror with MOSFET
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Practice Questions
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What is a current mirror?
💡 Hint: Think about how currents can be maintained in different parts of a circuit.
What are the two key components of a simple current mirror?
💡 Hint: Recall the basic building blocks we discussed.
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Interactive Quizzes
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What does a current mirror do?
💡 Hint: Think about the definition we reviewed.
True or False: A current mirror can only be constructed using BJTs.
💡 Hint: Recall the discussion about current mirror types.
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Challenge Problems
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Calculate the output current in a simple MOSFET current mirror when the reference current I_REF is 0.5 mA, with K1 = 1 mA/V² and K2 = 4 mA/V². Include effects of channel length modulation with λ = 0.02 V⁻¹.
💡 Hint: Use the non-ideality formula to find the final current.
What happens to the output current if one of the MOSFETs in a current mirror has a far lower K factor? Discuss its impact on the overall current replication ability.
💡 Hint: Remember how the K factors influence output scaling.
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