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Sample_Exam_2a

# Sample_Exam_2a - EE 310 Electronic Circuit Design I Spring...

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EE 310 Electronic Circuit Design I Spring 2009 Exam 2 Name: ____________________________ PSU ID Number: ___________________ Section Number: ___________________ Do not turn the page and begin this exam until the start time. 1. First, put your name, PSU ID and section numbers in the spaces above and on the exam answer form. 2. Please wait until you are instructed to begin the exam. Instructions: 1. This exam is closed book, closed notes. You may use a calculator but it may not be shared with anyone else during the exam. 2. Answers for the multiple choice problems should be entered on the provided answer form and in the exam booklet. 3. Time allotted is 120 minutes. 4. Good luck to all! Problems 1 20: __________ Problem 21: __________ Problem 22: __________ Problem 23: __________ Total: __________

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EE 310 Exam 2 Spring 2009 3/31/2009 2 Problems 1 5 [2 pts. ea.] For each of the circuit functions listed, choose the circuit (A E) that best implements the function. 1. A common-drain amplifier. 2. A common-gate amplifier. 3. An inverting amplifier. 4. A DC current source . 5. A DC current sink . Circuit Selections:
EE 310 Exam 2 Spring 2009 3/31/2009 3 Problem 6 8 [3 pts.ea.] Choose resistor values for the above circuit so that the DC bias current is I D = 100 μA, the amplifier’s small-signal input resistance is R in = 10 MΩ, and its voltage gain is v o / v i = 10 V/V. 6. Choose R G for an input resistance, R in , of 10 MΩ. R G values: A 1 M D 20 M B 5 M E C 10 M 7. Choose R ref so that the DC bias current is I D = 100 μ A. R ref values: A 80 kΩ D 180 kΩ B 90 kΩ E 190 kΩ C 100 kΩ 8. Choose R D so that the amplifier’s voltage gain is v o / v i = 10 V/V. R D values: A 20 kΩ D 50 kΩ B 30 kΩ E 60 kΩ C 40 kΩ MOSFET Parameters: Electrically matched devices K n = 100 μ A/V 2 V TN = 1 V λ n = 0 V 1

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EE 310 Exam 2 Spring 2009 3/31/2009 4 Problems 9 12 [3 pts.ea.] 9. Solve for the amplifier’s input resistance, R in , as shown in the circuit.
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