06S-midterm-sol

06S-midterm-sol - ECE65 (Spring 2006), Midterm Solution...

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ECE65 (Spring 2006), Midterm Solution Notes: 1. Write your answers on these three sheets. 2. For each problem, 20% of points are alloacted for the correct ±nal answer. 3. Use the following information in solving or designing circuits: OpAmps are powered by ± 15 V power supplies (power supplies not shown), have a unity-gain bandwidth of 10 6 Hz, a short-circuit current limit (maximum output current limit) of 250 mA, and a slew rate of 1 V/ μ s. Diodes are made of Si. 4. In circuit design, use 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 100 μ H inductors. Problem 1. Am radio stations are assigned a bandwidth of 20 kHz. Design a band-pass ±lter for the tuner of an AM radio station tuned to 980 kHz (center frequency). (10pt) o - + i - + V V R L C Because this is not a wide-band ±lter, the
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06S-midterm-sol - ECE65 (Spring 2006), Midterm Solution...

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