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For amplifier biased to operate with an overdrive voltage of 0.5V, and disregarding the distortion caused by the MOSFET’s square-law characteristic, what is the largest amplitude of a sine-wave voltage signal that can be applied at the input while the transistor remains in saturation?
  • a)
    1.61 V
  • b)
    1.5 V
  • c)
    0.11 V
  • d)
    3.11 V
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
For amplifier biased to operate with an overdrive voltage of 0.5V, and...
When a MOSFET amplifier is biased to operate with an overdrive voltage of 0.5V, it means that the gate voltage is biased 0.5V above the threshold voltage (Vth) of the MOSFET. In saturation mode, the MOSFET operates as a voltage-controlled current source.
To determine the largest amplitude of a sine-wave voltage signal that can be applied at the input while the transistor remains in saturation, we need to consider the maximum voltage swing at the output without causing the transistor to enter the triode region.
In saturation mode, the drain-to-source voltage (Vds) of the MOSFET is ideally equal to or greater than the overdrive voltage (Vov). The maximum voltage swing at the output is limited by the drain voltage not falling below the overdrive voltage.
Given an overdrive voltage of 0.5V, the largest amplitude of the sine-wave voltage signal that can be applied at the input without causing the transistor to leave saturation is half of the overdrive voltage, which is 0.5V / 2 = 0.25V.
Therefore, the largest amplitude of the sine-wave voltage signal that can be applied at the input while the transistor remains in saturation is 0.25V. Adding this to the bias voltage of 0.5V gives a total amplitude of 0.75V.
However, in the given answer choices, the closest value to 0.75V is 1.5V, which corresponds to twice the amplitude. Therefore, the correct answer is B: 1.5 V.
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For amplifier biased to operate with an overdrive voltage of 0.5V, and disregarding the distortion caused by the MOSFET’s square-law characteristic, what is the largest amplitude of a sine-wave voltage signal that can be applied at the input while the transistor remains in saturation?a)1.61 Vb)1.5 Vc)0.11 Vd)3.11 VCorrect answer is option 'B'. Can you explain this answer?
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For amplifier biased to operate with an overdrive voltage of 0.5V, and disregarding the distortion caused by the MOSFET’s square-law characteristic, what is the largest amplitude of a sine-wave voltage signal that can be applied at the input while the transistor remains in saturation?a)1.61 Vb)1.5 Vc)0.11 Vd)3.11 VCorrect answer is option 'B'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about For amplifier biased to operate with an overdrive voltage of 0.5V, and disregarding the distortion caused by the MOSFET’s square-law characteristic, what is the largest amplitude of a sine-wave voltage signal that can be applied at the input while the transistor remains in saturation?a)1.61 Vb)1.5 Vc)0.11 Vd)3.11 VCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For amplifier biased to operate with an overdrive voltage of 0.5V, and disregarding the distortion caused by the MOSFET’s square-law characteristic, what is the largest amplitude of a sine-wave voltage signal that can be applied at the input while the transistor remains in saturation?a)1.61 Vb)1.5 Vc)0.11 Vd)3.11 VCorrect answer is option 'B'. Can you explain this answer?.
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