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Consider the differential amplifier shown below and assume that IRC = 1mA. What is the voltage that may be measured at emitters of Q1 and Q2? Use the transistor characteristics of Q1 and Q2 at room temperature given below as well. IOV RB Q4 Vin QI Q2 Q3 Rc Nc U -10V
O a. 0 0 0 0 Typical Performance Curves DC FORWARD CURRENT TRANSFER RATIO -0.55 b. -0.65 O C. -0.45 O d. -0.75 100 90 80 70 60 50 0.1 VCE = 3V TA = 70°C TA = 25°C TA = 0°C 1 10 COLLECTOR CURRENT (MA) FIGURE 1. hFE VS IC 100 BASE-TO-EMITTER VOLTAGE (V) 0.9 0.8 0.7 0.6 0.5 0.1 VCE = 3V TA = 0°C TA = 25°C TA = 70°C 1 10 COLLECTOR CURRENT (mA) FIGURE 2. VBE VS IC 100