Spice error for model NDC7001C

Question

Hi,
I get the following error when I run the simulation "SpiceModelSims" (attached). Could there be a problem in the spice model file itself?
------ Checking SPICE netlist for SpiceModelSims - Wednesday, March 21, 2012, 11:37:48 AM ------
SPICE Netlist Error in schematic RefDes 'u3', element 'xu3':  Unexpected '0' found on subckt instance line - too many nodes or parameter value missing name.
SPICE Netlist Error in schematic RefDes 'u3', element '<unknown>':  Due to errors, the subckt instance 'xu3' has been omitted from the simulation
======= SPICE Netlist check completed, 2 error(s), 0 warning(s) =======
Thanks, any help would be appreciated!
Solved!
Go to Solution.
Attachments:
SpiceModelSims.ms11 ‏125 KB

Answer 1

Hi NRaj,
The model you used has two separate models, a P and an N MOS model.  Since you put both models inside one symbol it will cause a simulation problem.  To fix this problem, you have to modify the syntax so that both MOS models are called within a single model, the syntax should look something this:
.subckt NDC7001 DN GN SN DP GP SP
XQN DN GN SN SN NDC7001CQ1 
XQP DP GP SP SP NDC7001CQ2
.copy your model after the line above
.ends 
The attached file is the model with the changes I made.  When you edit your model, review the component creation tutorial from the link below.  Step 7 explains the relationship between the model subckt statement the symbol in Multisim. 
http://zone.ni.com/devzone/cda/tut/p/id/3173
Tien P.
National Instruments
Attachments:
NDC7001.txt ‏3 KB