H19_hw5 - EE214 Winter 04/05 B Murmann Handout#19 Page 1 of 2 HOMEWORK#5(Due Monday November 1 2004 noon PT 1 In class we have seen that in a

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EE214 Winter 04/05 Handout #19 B. Murmann Page 1 of 2 HOMEWORK #5 (Due: Monday, November 1, 2004, noon PT) 1. In class we have seen that in a negative feedback system, the fractional change in closed loop gain equals the fractional change in forward gain divided by (1+af). a) Using simple calculus, derive an expression for the fractional change in closed loop gain as a function of fractional change in f. b) Are variations in f also attenuated? Comment on the significance of this result. 2. Intrinsic gain charts. In the midterm design project, you will design a high gain amplifier. In this problem you will use HSpice to generate appropriate design charts that allow you to pick channel lengths based on gain requirements. Hint: use the following HSpice line to compute intrinsic gain: probe gmro = par('gmo(mn1)/gdso(mn1)') a) Generate an intrinsic gain plot (g m r o ) for NMOS transistors. As in previous homeworks, sweep V GS , use a diode connected device and channel lengths from 0.35…0.7
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This note was uploaded on 04/17/2008 for the course EE 214 taught by Professor Murmann,b during the Fall '04 term at Stanford.

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H19_hw5 - EE214 Winter 04/05 B Murmann Handout#19 Page 1 of 2 HOMEWORK#5(Due Monday November 1 2004 noon PT 1 In class we have seen that in a

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