ECE231 - 2008 - Term Test 1 Solutions

ECE231 - 2008 - Term Test 1 Solutions - ECE23IS —...

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Unformatted text preview: ECE23IS — Introductory Electronics Term Test #1 Lecturers — K. Phang, R. Genov Date — Friday, Feb. 8, 2008 Duration: 50 minutes 1. Answers should be written in pen. Warning: answers written in pencil may be considered ineligible for remarking. 2. The marks for each question are indicated within bracketsfl. Place your final answers in the boxes where given. 3. Show your work: answers without justification will not receive full marks! 4. Use back sides of sheets if necessary. Extra sheets are also provided at the end. 5. Aids: calculator only. (Any calculators including programmable are allowed). Question Mark S O Wit/“CW Last Name: First Name: Student #: Circle your regular tutorial room: HA401 /HA410 / BA2145 / 2155 / 2165 / 2175 / 2185 / 2195 page 1 of7 Last Name: Question 1: [5] In the circuit shown below, each resistor has a value of lMQ, and the input voltages are as fol— lows: VH=1V, V12=2V, and VI3=4V. Assuming the opamp is ideal, find V0. page 2 of 7 Last Name: Question 2: I [5] Assume the opamp has an infinite DC open loop gain and a unity—gain bandwidth of lOGHz. Sketch the amplitude and phase responses of this circuit. Clearly label numerical values for all key points on the graphs. R1=1M§L R2=9MQ, R3=1MQ and C3=O.159pF. @LP Ni‘fflmfifi with gram ‘3’ H {Ea/{49‘ “3-1 ltlvfilf DVZOGiig . n '0 wads w i ,9 aijflo) 1“szka [O ( 19H}: [06‘th ’1’ loom-e; Wei-é )0“leer 109mm LOO/VI) i , page 3 of 7 Last Name: Question 3: The opamp in the circuit below has an output slew rate of +/- lOV/us, an input offset voltage of +3mV, an input bias current of SOnA flowing into the opamp, and a zero input offset current. R1=100k£l R2=900k£2, R3=10k§2 and R4=30k£2. [5] (a) What is the maximum peak amplitude, VI max, of a ZOOkHz sine wave, 12,, applied at the input such that there is no slew rate limiting? " CA We '1‘“ * __. 7’” “2} o a i’MflX was? :2 «ER S Vin/ist JJU “"’ *3 R I (a t V SR __ it} x {0 fosea T: J ' » WMWW.L,W,W..memwwwwwwfifl'ff“: ° ° WW #5 AN 5' x 2‘ 37 >2 22.2139; (03 l WK; :wev “W ma page 5 of 7 Last Name: [5] (b) What is the output voltage when 121:0? BY ' Wwa V05: V9 11%?) V05 2+3OMV ---—« l :1) D) (gen/4M Iok #3019) W =‘3xgml/ ZASk page 6 of 7 ...
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This note was uploaded on 04/17/2008 for the course ECE 231 taught by Professor Phang during the Winter '08 term at University of Toronto- Toronto.

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ECE231 - 2008 - Term Test 1 Solutions - ECE23IS —...

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