How to simulate an active Op-amp filter?

Status
Not open for further replies.
M

Mac7978

Member level 2
Joined
Oct 17, 2003
Messages
45
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
377
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
 

Mac7978 said:
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
Click to expand...

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

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.
 

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
 

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
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…