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80 lines
2.4 KiB
80 lines
2.4 KiB
/**********
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Copyright 1990 Regents of the University of California. All rights reserved.
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Author: 1985 Thomas L. Quarles
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Modified: September 2003 Paolo Nenzi
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**********/
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/*
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*/
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/* load the capacitor structure with those pointers needed later
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* for fast matrix loading
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*/
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#include "ngspice.h"
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#include "cktdefs.h"
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#include "capdefs.h"
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#include "sperror.h"
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#include "suffix.h"
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/*ARGSUSED*/
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int
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CAPtemp(GENmodel *inModel, CKTcircuit *ckt)
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{
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CAPmodel *model = (CAPmodel*)inModel;
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CAPinstance *here;
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double difference;
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double factor;
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/* loop through all the capacitor models */
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for( ; model != NULL; model = model->CAPnextModel ) {
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/* loop through all the instances of the model */
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for (here = model->CAPinstances; here != NULL ;
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here=here->CAPnextInstance) {
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if (here->CAPowner != ARCHme) continue;
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/* Default Value Processing for Capacitor Instance */
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if(!here->CAPtempGiven) {
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here->CAPtemp = ckt->CKTtemp;
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if(!here->CAPdtempGiven) here->CAPdtemp = 0.0;
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} else { /* CAPtempGiven */
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here->CAPdtemp = 0.0;
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if (here->CAPdtempGiven)
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printf("%s: Instance temperature specified, dtemp ignored\n",
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here->CAPname);
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}
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if (!here->CAPwidthGiven) {
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here->CAPwidth = model->CAPdefWidth;
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}
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if (!here->CAPscaleGiven) here->CAPscale = 1.0;
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if (!here->CAPmGiven) here->CAPm = 1.0;
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if (!here->CAPcapGiven) { /* No instance capacitance given */
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if (!model->CAPmCapGiven){ /* No model capacitange given */
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here->CAPcapac =
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model->CAPcj *
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(here->CAPwidth - model->CAPnarrow) *
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(here->CAPlength - model->CAPshort) +
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model->CAPcjsw * 2 * (
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(here->CAPlength - model->CAPshort) +
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(here->CAPwidth - model->CAPnarrow) );
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} else {
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here->CAPcapac = model->CAPmCap;
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}
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}
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difference = (here->CAPtemp + here->CAPdtemp) - model->CAPtnom;
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factor = 1.0 + (model->CAPtempCoeff1)*difference +
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(model->CAPtempCoeff2)*difference*difference;
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here->CAPcapac = here->CAPcapac * factor * here->CAPscale;
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}
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}
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return(OK);
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}
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