Unformatted text preview: ECE65, Spring 2007, Final Exam Notes: 1. For each problem, 20% of points is for the “correct” final answer. 2. Messy, incoherent papers lose point! Explain what you are doing! 3. Use the following information only in designing circuits: OpAmps have a unitygain bandwidth of 10 6 Hz, a maximum output current limit of 100 mA, and a slew rate of 1 V/ μ s. OpAmps are powered by ± 15 V power supplies (power supplies not shown), NPN Si transistors have β = 200, β min = 100, r π = 3 kΩ, and r o = 100 kΩ. NMOS transistors have K = 0 . 25 mA/V 2 and V t = 2 V. In circuit design, use 5% tolarence commercial resistor and capacitor values of 1, 1.1, 1.2, 1.3, 1.5, 1.6, 1.8, 2, 2.2, 2.4, 2.7, 3., 3.3, 3.6, 3.9, 4.3, 4.7, 5.1, 5.6, 6.2, 6.8, 7.5, 8.2, 9.1 ( × 10 n where n is an integer). You can also use 5 mH inductors. Problem 1. Find the voltage transfer function and the input resistance of the circuit below (Assume OpAmp is ideal). (7 pts) Problem 2. Consider circuit below with a Si diode and...
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This note was uploaded on 04/15/2010 for the course ECE ECE65 taught by Professor Najmabadi during the Fall '09 term at UCSD.
 Fall '09
 Najmabadi

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