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fall 2001 3220 Final Exam

fall 2001 3220 Final Exam - Name SSN Fall2001...

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Name:_______________________________ Fall 2001 SSN: ________________                             EE 3220 Final Exam 1. Draw the bode plot for the following set of poles.  (5%) 2. Consider the differential amp below. find I o , r n  , Single ended differential and common mode  gains, and common mode rejection ratio. V SAT  = 0.1 volts, V f  = 0.7 volts. Assume that I B3 << I A , I C3  = I E3.          All  β  = 100,  r o3  = 25 k   (15%) V CC  = 12.7 volts   I o  = _______________________ V EE  = -12.7 volts r n  = _______________________ R C  = 5 k Acm-se1 = _________________ R A  =  500  Adm-se1 = _________________ R B  = 5 k CMRRse-1 = _______________ R E  = 10 k

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3. A BJT with a resistive pull-up load is used as a digital inverter has parameters  β F =50, V f  =  0.6, and V sat  = 0.3 V.     R C  = 1 k , and R B  = 4.7 k .  If V CC  = 5 Volts, what are the values of  V OH  and V OL  for this inverter?  (10%) 4. Determine the oscillation frequency for the Schmitt-Trigger Oscillator below.  Accurately plot
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• Spring '06
• Audiffred
• Volt, common mode, rejection ratio. VSAT, resistive pull­up load, loop gain Afb, low frequency bandwidth, potential digital applications.

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