Hello,

I am working on a verilogA model for a spintronic device. I want to incorporate a delay to represent the switching delay of the magnetic layer and initially just put in a constant number (200ps) by which the output is just delayed whenever an input switching event occurs.

The input swing is between -0.1V and 0.1V and the output swing is between   19mV and 79mV. I tried to use the transition filter. It's giving me convergence issues.

Can you please suggest me a function for incorporating delay please?

Best,
Nishtha

I really appreciate your help on this. Unfortunately, I am unable to post my model here at this time.

I tried 'transition' filter and it gives me a perfectly delayed output only when I add an extra terminal.

Code:

V(D,S)<+transition(vout,Tau,100E-12,100E-12);
V(state,S)<+transition(V(D,S),Tau,100E-12,100E-12);
 

In the above code, only after adding "state" as an extra terminal, I could delay the output V(D,S). "vout" is an internal node being assigned the value of the output per the cases in if-else statements. Tau is the delay I want to introduce in the output.

I really want to remove the extra terminal since it affects the device performance and functionality as a whole.

Best,
Nishtha