midterm_03

midterm_03 - ECE 137 A Mid-Term Exam February 10, 2003 Do...

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ECE 137 A Mid-Term Exam February 10, 2003 Do not open exam until instructed to. Closed book: Crib sheet and 1 page personal notes permitted There are 2 problems on this exam, and your have 50 minutes. Use any and all reasonable approximations (5% accuracy is fine. ) , AFTER STATING THEM. Name: _______________________ 1
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Problem 1, 70 points You will be working on the circuit below: Q1 Q2 Rd2 Rss1 Rg1 Rgen RL +Vdd -Vss Vgen Vin Vout Cout Q1, Q2 : =1 Volts. = 2.5 mA/V, th V g ox sat W C v ) 50 /( 1 Volts = λ Vdd=+5 volts. -Vss=-5 volts Rgen=100 kOhm RL=10 kOhm Rg1=1 MegOhm Rss1= ??? Rd2= ??? Cout is very big and has negligible AC impedance. 2
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Part a, 5 points DC bias. Q1 and Q2 are to each be biased with 1 mA source current. The circuit is to be biased such that the DC drain voltage of Q2 is 2.5 Volts. Find: Rss1=_______________ Rd2=_______________ 3
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Part b, 5 points DC bias Q1 Q2 Rd2 Rss1 Rg1 Rgen RL +Vdd -Vss Vgen Vin Vout Cout On the circuit diagram above, label the DC voltages at ALL nodes and the DC currents through ALL resistors 4
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This note was uploaded on 08/06/2008 for the course ECE 137AB taught by Professor Rodwell during the Winter '08 term at UCSB.

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midterm_03 - ECE 137 A Mid-Term Exam February 10, 2003 Do...

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