The datasheet for the LM741 shows the power connections to be different from your circuit. Here's the pinout for the LM741: Pin 8 is "NC" which stands for "not connected." Pin 7 is the proper V+. Asside from that, you can't run a 741 from 3.3V. Its inputs and outputs must all stay a couple of volts away from the power rails. That's more than your ...


I don't think the '741 will work with a supply of 3.3V and GND. Almost of of its parameters are specified at V+=+15V and V-=-15V. Change the supply voltages on your '741 model or use a different op amp.

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