Midterm-2002

Midterm-2002 - U NIVERSITY OF U TAH E LECTRICAL AND C...

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Unformatted text preview: U NIVERSITY OF U TAH E LECTRICAL AND C OMPUTER E NGINEERING D EPARTMENT EE/CS 5720/6720 Analog Integrated Circuit Design Midterm March 20, 2002 NAME: EE/CS 5720 EE/CS 6720 circle one (Please print) Do not open the exam until instructed. Draw a circle or box around your final answers. All answers should include units (e.g., V, mA, k ) where appropriate. For frequencies, use Hz (or kHz, or MHz), not radians/second. If you want partial credit on incorrect answers, show your work on the pages you turn in! If you choose to turn in any sheets of scratch paper, write your name on those sheets! Don&t spend all of your time on one difficult problem. Don&t be afraid to skip ahead if you get stuck. You don&t have to work the problems in order. Good luck! 1. (15 points) Consider the op-amp shown below. You may assume that all the transistors are operating in active mode. Q 3 I BIAS v OUT v + v- V SS V DD Q 4 Q 1 Q 2 Q 7 Q 10 Q 5 Q 6 C C Q 8 Q 9 V DD = - V SS = 3 V I BIAS = 50 & A & p C ox = 40 & A/V 2 & n C ox = 120 & A/V 2 V tn =-V tp = 0.8 V V A = 40 V (for all devices) ( W/L ) 1 = ( W/L ) 2 = ( W/L ) 5 = ( W/L ) 6 = ( W/L ) 10 = 100 ( W/L ) 3 = ( W/L ) 4 = 50 ( W/L ) 8 = ( W/L ) 9 = 200 C C = 5 pF (a) What is the gain of this amplifier, in dB? (b) What is the dominant pole frequency, in Hz? (c) What is the slew rate, in V/ s? 2. (20 points) Two-stage op-amps are commonly used because single-stage amplifiers typically yield insufficient gain. However, a high-gain single-stage amplifier can be built...
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Midterm-2002 - U NIVERSITY OF U TAH E LECTRICAL AND C...

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