EE 435 Exam 1 Spring 2008

EE 435 Exam 1 Spring 2008 - 1 EE 435 Exam 1 Spring 2008...

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1 EE 435 Name________________________ Exam 1 Spring 2008 Instructions: You may use up to 2 pages of notes for this exam. 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 weighted equally. 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 are the two major benefits of using current-mirror biasing of the counterpart circuit when designing an operational amplifier? Question 2 How does the GB vary with power dissipation in the single-stage op amps that have been discussed in class if the supply voltage is fixed? Question 3 What is the major benefit for identifying the set of practical design parameters rather than the natural design parameters when working on the design of operational amplifiers? Question 4 Why are cascades of more than two stages seldom used to increase the dc gain of an operational amplifier? Question 5
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This note was uploaded on 01/31/2012 for the course EE 345 taught by Professor Geiger during the Fall '11 term at Iowa State.

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EE 435 Exam 1 Spring 2008 - 1 EE 435 Exam 1 Spring 2008...

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