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s07-quiz3-solution

# s07-quiz3-solution - ffitT Wednesday ay 16 M Spring 2007...

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ffitT Wednesday, May 16 Spring 2007 You are reminded that academic dishonesty will NOT be tolerated. You have 50 minutes to complete the quiz. This is a closed book exam. No reference material of anv kind can be used. Question Your points Out of I 10 2 10 Total 20 Name So {uh on Student ID Signature Useful relations vor':hWv^np

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1. (10 points) For the logic circuit below, assume that Vpp : 2.5V, Vn : 0.5 V, Vtp : -0.4V, kL : -ZO pA I V', k!, : I20 pA lV', Vosarp - - 1 V, and W I L of all the nMOS transistors is 6. (a) (zpoints) Determine tlre logic function implemented. (b) (3 points) What is thb voltage level at node z if A : 0 and B : 7? This voltage level causes static powerdissipation. Explain why. (c) (2 points) Determine a remedy to the static power dissipation problem in part (b) using a single pMOS transistor.Draw the fix directly in the figure. (d) (3 points) Now set A : B : 1. Determine the size (WIL) of the pMOS transistor added to the circuit in part (c) so thatVu for the inverter input is less than Vr"12.
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s07-quiz3-solution - ffitT Wednesday ay 16 M Spring 2007...

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