83.4 - Small Signal Model Analysis
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Practice Questions
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What is the primary function of a current mirror?
💡 Hint: Think about current redundancy in circuits.
Name one type of transistor used in current mirrors.
💡 Hint: Consider common transistor types.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does a current mirror do?
💡 Hint: Consider what a mirror does!
Is the small signal model applicable under AC signal conditions?
💡 Hint: Think about small variations.
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Challenge Problems
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Design a current mirror circuit using two BJTs to ensure that the collector currents match precisely within 5%. Explain how you would achieve this.
💡 Hint: Think about how temperature affects junction conductivity.
Calculate the small signal output given a reference current of 1 mA and a transconductance of 10 mS in a MOSFET current mirror. What is the expected output current under a small AC signal?
💡 Hint: Use Ohm's and Kirchhoff's laws to analyze the circuit.
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