Given: An elementary model of an operational amplifier is shown below.
This model has no saturation level, but exhibits the high gain of an op-amp. Note that only four nodes should be made available to the external circuit. The above circuit should be made a PSpice subcircuit. See PSpice Tutorial No. 3 for details on how to create a subcircuit. You will use the subcircuit in the two-stage amplifier circuit shown below.
Required: Use PSpice to analyze the above two-stage amplifier circuit with op-amps X1 and X2 modeled as the subcircuit shown in the top figure. Determine the overall "gain" of the amplifier; i.e., the ratio of vo to vg. Create a separate text file named PS05.TXT with your PSpice text editor which contains the single line: "The overall gain of the amplifier is (your number here)."
Submit your printed "PS05.CIR," "PS05.OUT" and "PS05.TXT" files.