Annotation does not work however, Print DC operating point works fine - ISSUE

Tagging me on posts isn't necessary (by the way, I'm glad you finally posted a new post, rather than not following the forum guidelines and posting on the end of 10-year old threads). Other people are allowed to respond on these threads and I get notified on the posts anyway. I ignored the other two because you'd posted on the end of 10-year old threads with very little information, so I didn't see much benefit on responding to those other than to tell you to post a new thread, which you've now done, with sufficient detail.

In this case, understanding what is not working is going to be a challenge without being able to see the PDK - it's a fault with the PDK, to be honest. My guess is that the models have subckt models and are maybe not "inline" subckts, and so it can't see the operating point parameters. This is not insurmountable as it can be fixed in the CDF too. However, advising what to do here is going to be challenging (especially as I don't have easy access to the PDK you're talking about).

I would suggest first contacting UMC to find out if there's a fix for this, and then following up with customer support if that doesn't resolve it.

Regards,

Andrew.

Tagging me on posts isn't necessary (by the way, I'm glad you finally posted a new post, rather than not following the forum guidelines and posting on the end of 10-year old threads). Other people are allowed to respond on these threads and I get notified on the posts anyway. I ignored the other two because you'd posted on the end of 10-year old threads with very little information, so I didn't see much benefit on responding to those other than to tell you to post a new thread, which you've now done, with sufficient detail.

In this case, understanding what is not working is going to be a challenge without being able to see the PDK - it's a fault with the PDK, to be honest. My guess is that the models have subckt models and are maybe not "inline" subckts, and so it can't see the operating point parameters. This is not insurmountable as it can be fixed in the CDF too. However, advising what to do here is going to be challenging (especially as I don't have easy access to the PDK you're talking about).

I would suggest first contacting UMC to find out if there's a fix for this, and then following up with customer support if that doesn't resolve it.

Regards,

Andrew.

Thank you Andrew for your reply. Apologies for tagging you in the post. I read the guidelines only after I replied on the 10 year old posts, and then created the new post.

I went to see the model files under the spectre section and noticed that the .scs file for the model does not have the "inline" keyword. So I went ahead and edited and added the inline keyword (please see below), and referenced the model library in the ADEL window. However, it still didn't seem to work. I have created a ticket with customer support and sent an email to UMC too.

I tried playing with the CDF too, however it prevents me from editing, and says its read-only. 

MODEL FILE - 

inline subckt n_12_llhvtrf ( d g s b )
parameters nf=5 lf=0.06u wf=8u con=1 sc=2.5u rshgo=12.47 rshgwf=1.833e-006 rshgnf=1.056 rde=1M hfn_flag=hfnoise
+ rshg=rshgo * (1+rshgwf / wf) * (1+rshgnf / nf) lffc=5.3e+007 wffc=8e-007 cfo=4.856e-011 .........

Regards

Avinash M

Hi Avinash,

Just adding the inline keyword won't be enough. You also need to make sure that the instance name of the main transistor in the subckt has the same name as the subckt - i.e.

inline subckt n_12_llhvtrf ( d g s b )
parameters nf=5 lf=0.06u wf=8u con=1 sc=2.5u rshgo=12.47 rshgwf=1.833e-006 rshgnf=1.056 rde=1M hfn_flag=hfnoise
+ rshg=rshgo * (1+rshgwf / wf) * (1+rshgnf / nf) lffc=5.3e+007 wffc=8e-007 cfo=4.856e-011 .........

n_12_llhvtrf (d g s b) modelname param=value param2=value2 ...

This is how it would know that the  annotation data should come from that transistor.

You may of course want to be a little cautious about changing the model files!

Andrew

Dear Andrew,

I figured that out too after reading the spectre documentation, that you should have the same name. I see that the instantiation (n_12_llhvtrf) is missing, and another mosmodel (mos_n_12) is being called. However, I am still trying to figure out which file this model is present in.

mos_n_12 ( d g s b ) n_12_llhvtrf_main l=lf w=w nf=nf ad=p_area_d as=p_area_s pd=p_pj_d
++p_pj_dg ps=p_pj_s+p_pj_sg sa=sp_edge_nw+lf+sp_edge sb=sp_edge_nw+lf
++sp_edge sd=sp_poly sc=sc

Thank you for your swift reply Andrew. 

The model is not mos_n_12, but n_12_llhvtrf_main. mos_n_12 is the instance name, and that's what needs to change to n_12_llhvtrf for the inline subckt to be useful. Caveat emptor...

Regards,

Andrew.

Dear Andrew, It worked right now, after replacing this. Thank you so much for your help. Appreciate it a lot.

Regards

Avinash M