EE 140 Issued: TuDue: Tues 1. URterph 2. Fin uesday, Feb.1sday, Feb.8, 2Use inspectioRo, and gain erms of the gp, r, , etc.)ave infinite vind the inpunspection anANA1, 2011 2011, 5:00 p.mon analysis tvo/vS for eacgiven elemen) for the tranvalues. (a) (b) ut resistance Ralysis. ExplALOG INTEPROBLm. in the EE to write exprch of the amnts and paramnsistors usedFRi and the volain the purpEGRATEDLEM SET140 homeworressions for mplifiers in Fmeters of thed. For each c Fig. PS2.1 oltage gain vpose of the 1 CIRCUITST #2 rk box in 240the input reFig PS2.1. Te small-signcircuit, assuvo/vs of the c00 kΩ resistS0 Cory esistance Ri, The expressinal equivalenume that all c(c) (d) circuit in Figtor. SPRING C. Ngoutput resisions should nt circuits (i.capacitors shg. PS2.2 usin2011 guyen stance be in e., gm, hown ngEE 140 ANALOG INTEGRATED CIRCUITS SPRING 2011 C. Nguyen Fig. PS2.2 3. The BJT β values of the BJT in the emitter follower of Fig. PS2.3 may range from 20 to 200. For each extreme (β = 20 and β = 200), find: a. IE, VE, VB b. Ri c. vo/vs Fig. PS2.3 4. For the circuit in Fig. PS2.4, let transistor Q1 have β = 20 and transistor Q2 have β = 200, and neglect the effect of ro. Use VBE = 0.7 V. 0.5 mA1 kRs = 50 vs100 k88Rivo100 k10 k1 k1 k88+9 VRivoEE 140 5. CneIBa. Find tb. If a logain flookinc. Replaemitteto its ed. If the to the e. Find tCalculate the oeglect ro1 or rBIAS = 1 mA? ANAthe DC emittoad resistancfrom the baseng into the bacing Q2 wither follower Qemitter, ve1/vcircuit is fedbase of Q1, the overall voutput resistanro2 in this calcFor IBIAS = 0?ALOG INTEter current oe RL = 1 kΩ e to the emitase of Q2, Rh its input reQ1 to determvb1. d with a sourvb1/vs. oltage gain vFnce roc of the culation, but y? FEGRATEDf Q1 and Q2.is connectedtter of Q2, voib2. esistance Rib2ine its input rce having avo/vs includinFig. PS2.4 circuit in Figyou may negleFig. PS2.5 CIRCUITS. Also find td to the outpo/vb2, and fin2 found in (bresistance Ra 100 kΩ resing the resistg. PS2.5 as a fect rb and rμ. Sthe DC voltaput terminal,nd the input rb), analyze thRi, and the gaistance, findtances added function of IBI If IC2 = 1 mA SPRING C. Ngages VB1 and, find the volresistance he circuit of ain from its bd the transmid in parts b aIAS. Do not A, what is roc2011 guyen d VB2. ltage base ission and d.
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