EE 435 Final Exam Spring 2009

EE 435 Final Exam Spring 2009 - 1 EE 435 Final Exam Spring...

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1 EE 435 Name________________________ Final Exam Spring 2009 Instructions: This is an open-book, open-notes exam but no collaboration with anyone except the course instructor is permitted. This exam is to be returned to Rm 2133 Coover by 12:00 noon on Thursday May 7. All work should be included on this exam – attach additional pages only if more space is needed. There are 10 short questions worth 2 pts each. All problems are worth a maximum of 16 points. On those problems that need technology parameters, assume you are working in a 0.5u CMOS process with process with μ n C OX =100 μ A/v 2 p C OX =30 μ A/v 2 ,V TNO =0.8V, V TPO = - 0.8V, C OX = =2fF/ μ 2 , λ = 0.01v -1 , γ = 0, Cbdbot = 0.5fF/ μ 2 , and Cbdsw = 2.5fF/ μ . Question 1 What is the major advantage of adding a resistor in series with the compensation capacitor of the Miller compensated op amp ? Question 2 If the area of two matching critical components is increased by a factor of 4, how will the standard deviation of the random component of the mismatch change? Question 3 The cascoded amplifier, though often termed a single stage amplifier, is actually a two-stage amplifier. What are the two basic cascaded amplifier types in the cascode configuration? Question 4 What is the major disadvantage of the folded cascode op amp when compared to the telescopic cascode op amp? Question 5 If you are responsible for building an ADC that operates with a clock frequency of 100MHz and with a resolution of 10 bits, conventional wisdom provides guidance about which structure would be most useful. What structure is that?
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2 Question 6 There are two key components of the hypothesis of a theorem that must be satisfied to use the DFT for the calculation of the spectral components of a signal. What are these two key parts of the hypothesis? Question 7
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EE 435 Final Exam Spring 2009 - 1 EE 435 Final Exam Spring...

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