C now consider a short channel mosfet with and biased

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Unformatted text preview: ) Now consider a short-channel MOSFET with , and biased at and . What is its intrinsic gain (Assume that the electron drift velocity is saturated at and .) d) Based on your answers to part (a) and part (c), is MOSFET scaling (miniaturization) beneficial for amplifier circuit applications? Problem 3 [20 points]: For the following circuit, , . is a long-channel NMOSFET with , a) Estimate the bias current ( ) by assuming . Is the transistor operating in the triode or saturation region? Justify your answer. b) What is the maximum value of such that the MOSFET operates in the saturation region (Assume ). c) Assume . Draw the small-signal analysis circuit. Indicate numerical values for the NMOSFET small-signal parameters ( ). Problem 4 [20 points]: In the circuit shown below, , , and . Long-channel MOSFET (with performance parameters , and ) is biased such that . a) What is the minimum allowable value of if must operate in saturation mode? b) For operating at the edge of saturation (e.g. with ), what are the values of and if the input impedance must be ?...
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This note was uploaded on 01/22/2014 for the course EE 105 taught by Professor King-liu during the Fall '07 term at University of California, Berkeley.

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