How to simulate an active Op-amp filter?

[Mac7978]

I have a circuit diagram that is an active Op-amp low pass filter , but i don't know how to do the simulation of its frequency response using Pspice.

Can someone teach me???

Thanks

 

[eda4you]

I have a circuit diagram that is an active Op-amp low pass filter , but i don't know how to do the simulation of its frequency response using Pspice.

Can someone teach me???

Thanks

Use an sin input signal and ac amplitude) and measure ouputsignal => bode plot

 

[mince]

Use VAC for your input. Name your output node to something easy, like "vo". Simulate the circuit, and add a trace. Type DB(V(vo)) for the magnitude and P(V(vo)) for the phase.

 

[bastos4321]

Use an AC voltage source connected at input with 1V AC amplitude.

Vin in 0 AC 1 ** in is the input node of the filter. vout is the output node
.AC dec 1 1e8 50 ** set correctly the frequency range and number of points
.probe AC vdb(vout)

Bastos

 

[prowler]

I've been using Pspice for students to simulate some active filter circuits.

I used VSRC for an input source with AC=1

Then goto the Analysis > Setup drop down on the toolbar and click AC Sweep...

select Linear and set Total Pts.: to something like 1001

then enter the Start Freq.: and End Freq.: that you want to look at.

put Voltage/Level Markers on the Schematic that you want displayed.

run the simulation.

hope that helps

prowler