How to set an ABM to output certain frequency at certain voltage? Also, how to square some specific node? An example will be so helpful!

 

What's an ABM?

 

What's an ABM?

Analog Behavioral Model (ABM). Got your message I apologize, I should spell it out.

 

Do you mean the BV (arbitrary behavioral voltage source)?
Have you looked at the LTspice Help File for BV?

 

Do you mean the BV (arbitrary behavioral voltage source)?
Have you looked at the LTspice Help File for BV?

Yes, I did look for an answer there then felt lost and ended up here. I attached the BV pdf just to make sure whether thats what you mean or something else.

 

No, that's for a standard voltage source.
Here's the ABV file.

 

No, that's for a standard voltage source.
Here's the ABV file.

Hmm now I am a little bit confused! Is the ABV same as ABM or not?

 

Hmm now I am a little bit confused! Is the ABV same as ABM or not?

If you show me where the AMB is located in LTspice, I can tell you.

 

If you show me where the AMB is located in LTspice, I can tell you.

Hehehe okay then, it is the same!

 

I meant ABM.

So if you have any questions after reading that help file, get back with us.

 

I meant ABM.

So if you have any questions after reading that help file, get back with us.

I went through it and am pretty sure that I have to just give up! Its just too much for a junior ltspice user like me. Thanks though crutschow.

 

If you tell us more precisely the exact waveforms you want to generate, we may be able to help.

 

If you tell us more precisely the exact waveforms you want to generate, we may be able to help.

I wanted to use the ABM instead of the E2 (in the below image ) so that it outputs 2kHz when the data voltage is 0.

 

so that it outputs 2kHz when the data voltage is 0.

And what should it output when the 'data voltage' (which I take to mean the Vfsk voltage) is not zero?

 

And what should it output when the 'data voltage' (which I take to mean the Vfsk voltage) is not zero?

If not zero (say 1V) then output =4khz

 

See

 

See
View attachment 150681

Thanks Bordodynov. Yet, its too difficult for me to relate it to my inquiry.

 

The formula you have in your picture will almost work, the V(%in+, %in-) will most likely have to become V(n068) or V(Vfsk) or whatever. If you want to offset it by 2khz, then use (...)*TIME*(V(Vfsk)+12345)) where 12345 is the correct number that yields 2kHz in the whole equation when Vfsk is 0V (and I can't be bothered to find out what it is in your case)

just use a B source in the schematic, and google "ltspice voltage behavioral source" and you should find good enough examples how to use it and achieve what you need.