Inverting Voltage Amplifier Lab

In this lab, we designed an inverting op-amp and tested the output voltages and various input voltages to test the operation. Below is our design for an inverting op-amp with a gain of 2.

Vin (Volts)	Vout (Volts)
-3	3.58
-2.5	3.58
-2	3.58
-1.5	3.16
-1	2.11
-0.5	1.06
0	0
0.5	-1.02
1	-2.07
1.5	-3.12
2	-4.17
2.5	-4.25
3	-4.23
3.5	-4.24
4	-4.24

The table shows the output voltages measured at various input voltages. As seen above, the saturation voltages were 3.58V and -4.24V.


The circuit response was linear from -1.5 to 2 volts, essentially between saturation voltages. The average gain for the op-amp was -1.743.

The op-amp inverted the input voltage and our gain was nearly 2 for our circuit. The most interesting observation was that the positive and negative saturation voltages were not equal in magnitude.