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Unformatted text preview: Problem 7.1 in chapter 7 of Muller & Kamins, p. 375 in 3rd edition. Hint: for an npn transistor, use Eqns. 7.1.1 with constant base doping, and 7.1.3, and 7.1.4 (simplifies with constant base doping and low level injection). 4. Consider a Si doublegate nchannel JFET with the following parameters: N A = 3 x 10 18 cm3 , N D = 10 15 cm3 , a = 2 m, L = 20 m, and Z/L = 5. Assume n = 1000 cm 2 /Vsec and T = 300K. (a) Calculate the builtin voltage, the pinchoff voltage, and the value of the open channel conductance. 5. Problem 8.1 in chapter 8 of Muller & Kamins, p. 422 in 3rd edition. Homework assignments will appear on the web at: http://www.ece.udel.edu/~kolodzey/courses/eleg646s11.html Include your name, due date, assignment number, and course number on each submission....
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 Spring '08
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