Quiz 9 Resolution - Fall 2002 - Analog Electronics | ECE 3050, Quizzes of Electrical and Electronics Engineering

Material Type: Quiz; Class: Analog Electronics; Subject: Electrical & Computer Engr; University: Georgia Institute of Technology-Main Campus; Term: Fall 2002;

Typology: Quizzes

Pre 2010

Uploaded on 08/05/2009

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ECE 3050A — Fall 2002 Page | QUIZ NO. 9 - SOLUTION (Average Score = 6.2/10 for only those who took the quiz.) 1.) Ef the g,, of the MOSFET is O.1mA/V, find the midband gain and the location of all zeros and poles of the circuit shown. “ort 2.) If the amplifier above has two zeros at the origin and a pole at -1 rads/sec and 4 rads/sec., what is the lower -3dB frequency in Hz? Solution 1.) Small-signal model: Vour Cc) + + + Vin Re SV, Vous - ~ &mnVz = O Cy + + + Vin Ro SV, 4) RLS Vout - ~ 8mVz _ +5 FO2Q09S 1 Vout 8m We MR, Rg 5k 1M Vin = XR, Ry tT (Mais + Rr +505 Rat sey} (5k +55 || 1M + 5Cy J ‘Oe ——|-tal) $+ 15k C, JIS + IMC, . MGB = 0,333, two zeros at Oxads/sec. and polcs at —1 rad/see and —6,67 rads/sec. 2) oo, =p? + py? = Ua? + 2? = V1? 442.20) =Vi7 = 4.123 rads/see., 4,123 Ju= 628 = Q.656Hz