20.1.4 - Determining Input to Output Transfer Characteristic
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Practice Questions
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What is the quiescent point (Q-point) in aMOSFET circuit?
💡 Hint: Think of where the transistor operates without any signal input.
Why are MOSFETs considered non-linear?
💡 Hint: Consider the transfer characteristic graph shape.
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Interactive Quizzes
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What is the purpose of using a Q-point in MOSFET circuits?
💡 Hint: Think about where you want a transistor to operate.
MOSFET transfer characteristics are typically linear.
💡 Hint: Reflect on transfer characteristic graphs.
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Challenge Problems
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A MOSFET has a transconductance of 6 mA/V², and the threshold voltage is 2V. If V_gs is increased from 4V to 5V while maintaining a load resistor of 1kΩ, calculate the output voltage change across the load.
💡 Hint: Make sure to compute the output voltage for both states to find the difference.
Design a small-signal model for a circuit involving two MOSFETs in a differential amplifier configuration. Consider their individual Q-points and account for their interaction.
💡 Hint: Focus on understanding how each MOSFET impacts the circuit while linearizing them about their operating points.
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