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plot opearting point in extracted simulations

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nannapaneni

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Hi all,

In my schematic there is transistor MP3 at hierarchy DCDCDAC_0/dac_sl/I43 level.
To plot operating point drain current in this transistor I am using expression OP("/DCDCDAC_0/dac_sl/I43/MP3","ids").
Till now it was fine.

For post layout(extraction) simulation there was no hierarcy because it was flattened and tried to use same expression to plot drain current in MP3. But I was failed.

Can anyone help me what expression I should use to plot current in MP3?????

All simulations I am doing in GUI.

Thanks in advance for help.
 

In extracted layout select the transistor corresponding to MP3 and see its properties ("q" in Cādence tools). So you should be able to print its drain current.
 
i am looking for genearl solution, which is applicable for big designs also
 

You didn't tell which extraction nor LVS tool you're using. Usually LVS tools generate cross-ref (correspondence) lists for nets and devices. This is a feature which can be enabled (or not), see e.g. (Cādence si):

Code: 
si: simSetDef().... [COLOR="#FF0000"]createXref is initialized to "nil"[/COLOR].
si: simSetDef().... useLastBinaryXrefTable is initialized to "nil".
createXref useLastBinaryXrefTable disableLikeMatch disableRewire layoutRundir
[COLOR="#FF0000"]correspondenceFile createXref[/COLOR] disableRewire useFileCorrespondence
"layout/map/current~" "layout/termbad.out" "layout/netxref.out"
"layout/devxref.out" "layout/prunedev.out" "layout/prunenet.out"
"schematic/termbad.out" [COLOR="#FF0000"]"schematic/netxref.out" "schematic/devxref.out"[/COLOR]
"schematic/ovfldev.out" "schematic/ovflnet.out" "lvs.cpoint" "si.out" "xref.out"
si: simSetDef().... createXref is initialized to "nil".
si: simSetDef().... useLastBinaryXrefTable is initialized to "nil".
 

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