help---mixed signal simulation problem of the cadence AMS

[saiaoying]

cadence ams view

When i run a mixed signal simulation on cadence AMS,HED show these error:

ncelab :*w, CUNOUN: Can not find any unit under tsmc18rf.nmos2v:symbol in the design libralies

could anyone help me to solve this problem?
thanks

 

[saiaoying]

cadence mixed signal simulation

1.is it necessary to get a "ams" view included in the pdk?
2.if there is only a "symbol" of the "nmos2v" in the pdk, how can i get it?

 

[edajason]

ams+cunoun

You should create a config view first. When you run AMS, make sure to update your config view as long as you modify the schematic view. Be sure to re-netlist the design.

 

[saiaoying]

Re: help---mixed signal simulation problem of the cadence AM

hi edajason

what you said i have done. so far, i find the problem maybe come from the tsmc18rf PDK, because the test-DUT can run very well on the AMS enviroment when i use gpdk090 PDK. but i don't have any idea what to do next.

could you please tell me how to modify tmsc18rf?

 

[edajason]

Probably you could track your netlist where the nmos2v comes from. If you would like to modify your tsmc18rf lib, better make a copy and make your own lib. And re-define your model library setup in the Artist Environment.

 

[gaom9]

Hi saiaoying
I met this problem too. Have you solved it?
I have tried many different setting, but it does not work!


Thank you!
Best regards!

 

[gaom9]

I have found the way to solve this problem.
Because the AMS simulation is different from spectre, so we must use the CIW-Conversion Tool Box-AMS simInfo form Spectre to creat the simulation information of the PDK.
After doing that, the simulation can run right.

Best regards!

 

[khaled2k]

guys, I have the same problem.
I have the problem in both analogLib for NMOS4 instance and all PDK instances
gaom9, could you please explain in more details?