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Q1. Design a BJT common-source amplifier with a current-source load. The input of the amplifier is given by : Vin,total = Vin + V DC where Vin and V DC are the AC and DC components of the input, respectively.
Only following components are permitted in construction of the amplifier : Bipolar junction transistors and one voltage source Vcc. No any other types of components are permitted.
(1) Show the complete schematic of the amplifier.
(2) Assume the parameters of BJTs (gm, go, r be, ß) are known.
Find the voltage gain of the amplifier.

Q2. Design a MOSFET common-gate amplifier with a current-source load. The input of the amplifier is given by : Vin,total = Vin + V DC where Vin and V DC are the AC and DC components of the input, respectively. The amplifier drives a low-impedance load. Only the following components are permitted in construction of the amplifier : MOSFETs and one voltage source V DD. No any other types of components are permitted.
(1) Show the complete schematic of the amplifier.
(2) Find the voltage gain of the amplifier.

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