# pract_ex2_b - NAME _SOLUTIONS_ NETID _ MIDTERM EXAM 2...

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NAME _ SOLUTIONS ____________________________ NETID _______________ MIDTERM EXAM 2 (Closed book) ECE 442 July 21, 2005 8:00 a.m. – 9:00 a.m. Instructions : Write your name, and NetID where indicated. This examination consists of 4 problems. You are allowed to use a calculator and a formula sheet (8 1/2 by 11 in). Show all work. Problem1 Problem 2 Problem 3 Problem 4 Total

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- 2 - 1. Sketch a CMOS realization for the function YABCA D =+++ . One possible implementation is: A A A A B D B C C D +V DD Y
- 3 - 2. For the circuit shown, determine the values of: (a) v 1 v 1 = 0 since it is a virtual ground (b) i 1 1 1 1 10 1 mA 1k 1 Vv i == = Ω (c) i 2 12 ii (d) v o 2 01 01 1 0 V o vvR i =− =−×= (e) i L 10 mA o L v i Ω (f) i o 2 10 1 11 mA oL iii =−= − −= 1 k Ω 1 V 10 k Ω - + 1 k Ω v 1 v o i o i 2 i 1 + - i L

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- 4 - 3. The voltage amplifier circuit shown in the figure has R s = 20 k Ω , R i = 100 k Ω , C i =60 pF, μ = 144, R o = 200 Ω , and R L = 1 k Ω . Calculate the values for (a) the dc gain. (b) the 3-dB frequency (c) the frequency at which the gain becomes 0 dB (i.e. unity) + R s + + - - - + - V s V i V o R L R o R
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## This note was uploaded on 09/19/2009 for the course ECE 442 taught by Professor Schutt-aine during the Spring '08 term at University of Illinois at Urbana–Champaign.

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pract_ex2_b - NAME _SOLUTIONS_ NETID _ MIDTERM EXAM 2...

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