Hey.. below is my lowpass schematic in PSPICE and the simulation result.
The circuit is taken from the opamp datasheet so there should be nothing wrong with the circuit.. This opamp support single supply at 5V..
However, the simulated AC sweep result shows a negative gain..? 600uV..? How can that be possible when my input signal is 1mV..?
Anythoughts..? By the way, I have spent no lees than 4 hours trying to get just the lowpass filter to simulate correctly.. And i am out of ideas.. Any ideas..?
Thanks..