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How to handle XL compliance and LVS reduction together

Suryansh Singh

Hi,

I am using virtuoso XL and trying to be 100% XL compliant. Now I have created 2 instances in the schematic for a device. The connections are all the same but finer and multiplier differ.

MN3 W=1.818 L=17n nf=2 m=6
MN2 W=3.636 L=17n nf=4 m=1

LVS extracts the devices in layout and finally reduces them to just one 1 instance. Now LVS reports incorrect instance and property mismatch.

(on the schematic side it could not be reduced due to difference in widths)

On the layout side, I have proper devices with equivalent device parameters. 

If I use only one device in schematic something like,

MN3 W=18.18 L=170n nf=2 m=8 , I have a LVS match.

My question is :

Does Only 1-1 mapping of devices qualify as XL compliant? How does it handle device reduction then?

Can I have something that allows me to be XL compliant? I looked up the XL user guide and found many to many binding. 

Is this a possible solution?

Regards

Suryansh 

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