P6. A transconductance amplifier is cascaded with a transresistance amplifier, as shown in the figure. The parameters are RS = 5 kΩ, Ri1 = 50 kΩ, Ro1 = 200 kΩ, Rm = 10 kVA, Ri2 = 1 MΩ, Ro2 = 100 kΩ, RL = 1 kΩ, and Gm = 20 mA/V. a) Calculate (both in ratio and dB) a. the overall open-circuit voltage gain Avo = vo/vi b. the effective voltage gain Gv = vo/vs c. the overall current gain Ai = io/ii d. the power gain Ap = PL/Pi b) Convert the circuit to an equivalent single-stage Voltage amplifier by drawing its model and specifying the equivalent Ri, Ro, and Avo c) Verify your results using Multisim.
Q.2. For the cascade amplifier shown below, the Rsource = 100 kOhms, Ri1 = 2 MOhms, Ro1 = 20 kOhms, Ri2 = 200 kOhms, Ro2 = 1 kOhms, Ri3 = 20 kOhms, Ro3 = 5 Ohms, Rload = 100 Ohms. Open circuit gain Avo1 = 10, Avo2 = 100, Avo3 = 1.2.1 Let Vs be 2 mV, Find Vi1, Vi2, Vi3, and VL. (20 pts) 2.2 Please calculate the overall voltage gain of VL/Vs. (10 pts)