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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?
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For amplifier biased to operate with an overdrive voltage of 0.5V, and...
Use the standard mathematical formula to obtain the result.
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For amplifier biased to operate with an overdrive voltage of 0.5V, and...
When an amplifier is biased to operate with an overdrive voltage of 0.5V, it means that the input signal is amplified to a level that is 0.5V higher than the maximum voltage swing available in the circuit. This allows the output signal to reach the maximum voltage swing without distortion.
In a MOSFET amplifier, the biasing is typically done by setting a DC voltage at the gate terminal of the MOSFET. This DC voltage determines the operating point of the amplifier, and the overdrive voltage is the difference between the input signal voltage and this DC bias voltage.
Disregarding the distortion caused by the MOSFET means assuming that the MOSFET operates in the linear region and does not introduce any nonlinearities or clipping to the output signal. In practice, MOSFET amplifiers can introduce distortion due to various factors such as limited voltage swing, nonlinearity of the MOSFET transfer characteristics, and other circuit imperfections. However, if the overdrive voltage is properly set and the MOSFET is biased to operate in its linear region, the distortion can be minimized.
In a MOSFET amplifier, the biasing is typically done by setting a DC voltage at the gate terminal of the MOSFET. This DC voltage determines the operating point of the amplifier, and the overdrive voltage is the difference between the input signal voltage and this DC bias voltage.
Disregarding the distortion caused by the MOSFET means assuming that the MOSFET operates in the linear region and does not introduce any nonlinearities or clipping to the output signal. In practice, MOSFET amplifiers can introduce distortion due to various factors such as limited voltage swing, nonlinearity of the MOSFET transfer characteristics, and other circuit imperfections. However, if the overdrive voltage is properly set and the MOSFET is biased to operate in its linear region, the distortion can be minimized.
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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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