2005Mid-term1 - EECS 413 Midterm 1 2005 Exam duration: 1...

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Unformatted text preview: EECS 413 Midterm 1 2005 Exam duration: 1 hour 3 questions Name: Honor Pledge I have not given or received aid on this exam Signed: ________________________ Q1 Q2 Q3 Question 1 2.5V 10kΩ vout vin M1 2V Do not ignore channel length modulation λ =0.1 V -1 P Ignore all capacitances. V TH = 1V B B The quiescent voltage at the drain of M1 is 1.5V (a) Is M1 operating in triode or saturation? (b) What is the value of the transconductance of M1? (c) Write an expression for the small signal low frequency gain in terms of the small signal parameters? (d) What is the value of the small signal gain? 2 (e) If the gate bias is reduced from 2V to 1.5V then what is the new value of the small signal gain? Ignore channel length modulation for this part ( i.e. for part (e) only) ) 3 Question 2 VDD VDD vin M1 vout M2 Ignore all capacitances. VBIAS Ignore channel length modulation i.e. λ=0 (a) Identify the stages of the amplifier (i.e. which types of amplifiers?). (b) Write an expression for the low frequency small signal gain. 4 (c) Write an expression for the low frequency input resistance of the amplifier? (d) Write an expression for the low frequency output resistance of the amplifier? 5 Question 3 VDD (a) R1 vout vin M1 CL VBIAS Ignore all capacitances except C L B B Ignore channel length modulation i.e. λ=0 R2 Write an expression for the small signal gain. Identify any poles and zeros. 6 (b) VDD Ignore all capacitances except C L R1 IBIAS B vout vin B Ignore channel length modulation i.e. λ=0 M1 CL VBIAS R2 Write an expression for the small signal gain Identify any poles and zeros. 7 (c) VDD R1 vout viin n Ignore all capacitances except C S B B Ignore channel length modulation i.e. λ=0 M1 2V R2 CS Write an expression for the small signal gain Identify any poles and zeros. 8 ...
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This note was uploaded on 01/12/2012 for the course EECS 413 taught by Professor Staff during the Spring '08 term at University of Michigan.

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2005Mid-term1 - EECS 413 Midterm 1 2005 Exam duration: 1...

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