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# Hwk5 - ECE 255 ELECTRONIC ANALYSIS AND DESIGN Fall 2011 Due...

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Rd Rss Vdd T1 2 kohm Vdd 100 kohm Unknown R1 Vdd Rd Vdd Rss R2 Vdd R1 T1 ECE 255 ELECTRONIC ANALYSIS AND DESIGN Fall 2011 Homework 5 Due Friday, November 4 5:00 p.m. MSEE 180 Drop Box 1) The FET in the circuit at the right is characterized by |I DSS | = 22.5 mA and |V P | = 3.6 V. Determine suitable values for the external circuit elements to obtain an operating point of |I D | = 15 ma and |V DS | = 6 V. 2) Determine suitable values for R 1 and V DD in the circuit at the right to provide an operating point of |I D | = 12 mA and |V DS | = 8 V, if the FET is satisfactorily described by the nonlinear relationship ( 29 2 D GS I 4 V 2 m A = + . 3) Select element values for the circuit shown to maintain D 4 I 6 mA for transfer functions ranging from 2 GS D V I 20 1 m A 4 = + to 2 GS D V I 7.2 1 mA 1.44 = + , assuming that V DD = 16 V. 4) Show your calculation to determine the largest value of R D that can be used in the circuit that you biased in Problem 3

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Hwk5 - ECE 255 ELECTRONIC ANALYSIS AND DESIGN Fall 2011 Due...

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