08-12-2008 08:37 AM
*
*Zetex ZXCT1080 Spice Model v2.0 Last Revised 28/04/08
*
.SUBCKT ZXCT1080 1 2 3 4 5
*
*Pins = Gnd, Vcc, S+, S-, Vout
*
R1 2 1 1E6
R2 4 1 1E8
R3 13 14 1000
R4 15 5 Rmod1 3.5
R5 16 12 9
R6 12 1 Rmod2 1
R7 3 1 1E6
R8 21 22 Rmod3 1
C1 14 1 3E-10
E1 16 1 value={((V(3)-V(4))*100)+(V(3)/466*(V(3)-V(4))+((V(2)-5)/100)+0.025+(V(21)*10))}
E2 13 1 value={V(12)-((V(12)-V(2))*(TANH((V(12)-V(2))*110)+1)/2)}
E3 15 1 value={V(14)*((TANH(V(14)*100)+1)/2)}
I1 1 21 1
V1 1 22 1
.MODEL Rmod1 RES (TC1=6e-3 )
.MODEL Rmod2 RES (TC1=5e-6 )
.MODEL Rmod3 RES (TC1=5e-5 )
.ENDS ZXCT1080
*
*$
*
* (c) 2008 Diodes Incorporated
*
* The copyright in these models and the designs embodied belong
* to Diodes Incorporated (" Diodes "). They are supplied
* free of charge by Diodes for the purpose of research and design
* and may be used or copied intact (including this notice) for
* that purpose only. All other rights are reserved. The models
* are believed accurate but no condition or warranty as to their
* merchantability or fitness for purpose is given and no liability
* in respect of any use is accepted by Diodes Incorporated, its distributors
* or agents.
*
* Diodes Incorporated, 1566 N. Dallas Parkway, Suite 850, Dallas, TX 75248, USA
08-12-2008 06:03 PM
In my searching around, I could not find a spice model for a ZXCT1080 either from Zetex or Diodes Incorporated. The question becomes, where did you get this from? The reason I ask is that where ever you acquired it, it may not be a good model or at least not compatible with Multisim in some fashion. If you aquired it from Diodes Incorporated, then you may need to contact them and let them know that you are using Multisim and see if they can provide one that is compatible.
The only other option is to hope there is a person here that can decipher what is wrong with it and how to make it compatible with Multisim. Unfortunately, I am not the person that can do this.
I wish I could of been more help, but model deciphering is not my specialty.
08-13-2008 05:58 AM
Hi lacy,
I downloaded the spice model from zetex website @ http://www.zetex.com/3.0/spice/zxct1080.mod and also, the full zetex product range spice model can be downloaded from http://www.zetex.com/3.0/spice/zmodels.lib.
I have emailed their spice department regarding multisim, hopefully they will reply soon 🙂
mark
08-13-2008 06:24 PM
Thanks for informing me about that. I looked at their site, but apparently I overlooked it. You did the right thing by contacting them. Most of the time these companies produce models for Pspice or some other EDA package and just ignore Multisim. Maybe if enough people contact these IC manufacturers and request spice model for Multisim, they may see that this package is just as popular or more so than any other and start producing compatible models. This may never happen, but it doesn't hurt to try.
In the meantime, if anyone else on the forum is more knowledgeable about spice models and would like to take a crack at getting this one to work for this user, please feel free.
09-09-2008 09:00 AM - edited 09-09-2008 09:01 AM
Hi,
It looks like you are running an earlier version of Multisim which was less compatible with the PSpice syntax used in this model. Which version are you running?
From the error log it appears that the resistor model syntax is the offending device. Try this modified syntax:
.SUBCKT ZXCT1080 1 2 3 4 5
*
*Pins = Gnd, Vcc, S+, S-, Vout
*
R1 2 1 1E6
R2 4 1 1E8
R3 13 14 1000
R4 15 5 3.5 tc1=6e-3
R5 16 12 9
R6 12 1 1 tc1=5e-6
R7 3 1 1E6
R8 21 22 1 tc1=5e-5
C1 14 1 3E-10
E1 16 1 value={((V(3)-V(4))*100)+(V(3)/466*(V(3)-V(4))+((V(2)-5)/100)+0.025+(V(21)*10))}
E2 13 1 value={V(12)-((V(12)-V(2))*(TANH((V(12)-V(2))*110)+1)/2)}
E3 15 1 value={V(14)*((TANH(V(14)*100)+1)/2)}
I1 1 21 1
V1 1 22 1
.ENDS ZXCT1080
Note that I tried your circuit with the original model in both V10.0.1 and our latest release - V10.1 - and had no simulation or issues.
09-09-2008 04:55 PM
09-09-2008 05:13 PM
Please attached your circuit
09-09-2008 08:08 PM