Question

-o +V cc А A 11 Q3 Q4 AES Q5 U U2 Q Q2 26. 5 AV Q1 А VO 5A V 012 A RL 27 IREF Q. Q10 08 A A 5 A --VEE Figure 16.44 Complete bipolar operational amplifier. Part 2) Use B (beta) = 100 and VA = 100 V for all transistors when calculating gains. However, assume ideal current mirrors - i.e., don't worry about ß or VA corrections when calculating the currents. Also assume a (alpha) = 1 for DC, and don't worry about Vce for the r, calculations. Given 11 = 1 mA, assume l in Q6 = 11, and RL = 1 ks2 (k-ohm). Use absolute values for all gains, don't worry about signs. Ignore the equivalent resistance of the two diodes. What is the differential gain of the first stage? A. 2000 B. 4000 C. 9.95 D. 995

Answer 1

Gain of first stage A = Gm Ro Gm - Short ckttrans con decetance Ic Gro = 9m, 9m2 = 9m3 I1/2 Ro=Ballror [80g = Voz) VT Roaro 8= M-54) alt 2) IN I, VA 217 2000 Option 21254103)

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