Cascode amplifier circuit

 

Construct the full circuit (including the DC biasing circuitry,coupling capacitors) in MultiSim.Important things to note in constructing the circuit.

a. Add biasing DC sources/resistive networks to ensure the both transistors arebiased in the satuation mode.

b. Place an AC sinusoidal source of 1V pk-pk (Peak to Peak) with 1kHz frequency.This source will represent the input signal to the circuit that needs to be amplified.

c. Place capacitors at the input and the output of the circuit. The capacitor at theinput will couple the AC input source to the circuit while isolating the DC biassource to the circuit. The capacitor at the output is intended to filter the AC signalwhile blocking the DC from the output node.

d. Choose the values of the capacitances to guarantee that the capacitor will notinterfere with the desired function of the circuit: amplifying a signal at 1kHzfrequency.

1 Note that this circuit is the same circuit that was used in the previous assignment.1.07352 mA/V21.2 mA

e. Place Oscilloscopes (see Figure 3) in the circuit schematic to measure the inputand output voltage and compare them on a single display. Connect the B probesof the oscilloscope to the output signal and the channel A probe to the inputsource. The purpose of this step is to enable you to visualize the two signal on thesame display.

f. Adjust the parameters of the MOSFETs in the circuit to match exactly thespecifications indicated above on Figure 1.

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