int
BSIM4v7noise (
int mode, int operation,
GENmodel *inModel,
CKTcircuit *ckt,
Ndata *data,
double *OnDens)
{
NOISEAN *job = (NOISEAN *) ckt->CKTcurJob;
BSIM4v7model *model = (BSIM4v7model *)inModel;
BSIM4v7instance *here;
struct bsim4SizeDependParam *pParam;
char name[N_MXVLNTH];
double tempOnoise;
double tempInoise;
double noizDens[BSIM4v7NSRCS];
double lnNdens[BSIM4v7NSRCS];
double T0, T1, T2, T3, T4, T5, T6, T7, T8, T10, T11;
double Vds, Ssi, Swi;
double tmp=0.0, gdpr, gspr, npart_theta=0.0, npart_beta=0.0, igsquare, bodymode;
/* tnoiMod=2 (v4.7) */
double eta, Leff, Lvsat, gamma, delta, epsilon, GammaGd0=0.0;
double npart_c, sigrat=0.0, C0, omega, ctnoi=0.0;
int i;
double m;
/* define the names of the noise sources */
static char *BSIM4v7nNames[BSIM4v7NSRCS] =
{ /* Note that we have to keep the order */
".rd", /* noise due to rd */
".rs", /* noise due to rs */
".rg", /* noise due to rgeltd */
".rbps", /* noise due to rbps */
".rbpd", /* noise due to rbpd */
".rbpb", /* noise due to rbpb */
".rbsb", /* noise due to rbsb */
".rbdb", /* noise due to rbdb */
".id", /* noise due to id (for tnoiMod2: uncorrelated portion only) */
".1overf", /* flicker (1/f) noise */
".igs", /* shot noise due to IGS */
".igd", /* shot noise due to IGD */
".igb", /* shot noise due to IGB */
".corl", /* contribution of correlated drain and induced gate noise */
"" /* total transistor noise */
};
for (; model != NULL; model = model->BSIM4v7nextModel)
{
if(model->BSIM4v7tnoiMod != 2) {
noizDens[BSIM4v7CORLNOIZ] = 0.0;
lnNdens[BSIM4v7CORLNOIZ] = N_MINLOG;
}
for (here = model->BSIM4v7instances; here != NULL;
here = here->BSIM4v7nextInstance)
{ pParam = here->pParam;
switch (operation)
{ case N_OPEN:
/* see if we have to to produce a summary report */
/* if so, name all the noise generators */
if (job->NStpsSm != 0)
{ switch (mode)
{ case N_DENS:
for (i = 0; i < BSIM4v7NSRCS; i++)
{ (void) sprintf(name, "onoise.%s%s",
here->BSIM4v7name,
BSIM4v7nNames[i]);
data->namelist = TREALLOC(IFuid,
data->namelist,
data->numPlots + 1);
if (!data->namelist)
return(E_NOMEM);
SPfrontEnd->IFnewUid (ckt,
&(data->namelist[data->numPlots++]),
NULL, name, UID_OTHER, NULL);
/* we've added one more plot */
}
break;
case INT_NOIZ:
for (i = 0; i < BSIM4v7NSRCS; i++)
{ (void) sprintf(name, "onoise_total.%s%s",
here->BSIM4v7name,
BSIM4v7nNames[i]);
data->namelist = TREALLOC(IFuid,
data->namelist,
data->numPlots + 1);
if (!data->namelist)
return(E_NOMEM);
SPfrontEnd->IFnewUid (ckt,
&(data->namelist[data->numPlots++]),
NULL, name, UID_OTHER, NULL);
/* we've added one more plot */
(void) sprintf(name, "inoise_total.%s%s",
here->BSIM4v7name,
BSIM4v7nNames[i]);
data->namelist = TREALLOC(IFuid,
data->namelist,
data->numPlots + 1);
if (!data->namelist)
return(E_NOMEM);
SPfrontEnd->IFnewUid (ckt,
&(data->namelist[data->numPlots++]),
NULL, name, UID_OTHER, NULL);
/* we've added one more plot */
}
break;
}
}
break;
case N_CALC:
m = here->BSIM4v7m;
switch (mode)
{ case N_DENS:
if (model->BSIM4v7tnoiMod == 0)
{ if (model->BSIM4v7rdsMod == 0)
{ gspr = here->BSIM4v7sourceConductance;
gdpr = here->BSIM4v7drainConductance;
if (here->BSIM4v7grdsw > 0.0)
tmp = 1.0 / here->BSIM4v7grdsw; /* tmp used below */
else
tmp = 0.0;
}
else
{ gspr = here->BSIM4v7gstot;
gdpr = here->BSIM4v7gdtot;
tmp = 0.0;
}
}
else if(model->BSIM4v7tnoiMod == 1)
{ T5 = here->BSIM4v7Vgsteff / here->BSIM4v7EsatL;
T5 *= T5;
npart_beta = model->BSIM4v7rnoia * (1.0 + T5
* model->BSIM4v7tnoia * pParam->BSIM4v7leff);
npart_theta = model->BSIM4v7rnoib * (1.0 + T5
* model->BSIM4v7tnoib * pParam->BSIM4v7leff);
if(npart_theta > 0.9)
npart_theta = 0.9;
if(npart_theta > 0.9 * npart_beta)
npart_theta = 0.9 * npart_beta; //4.6.2
if (model->BSIM4v7rdsMod == 0)
{ gspr = here->BSIM4v7sourceConductance;
gdpr = here->BSIM4v7drainConductance;
}
else
{ gspr = here->BSIM4v7gstot;
gdpr = here->BSIM4v7gdtot;
}
if ((*(ckt->CKTstates[0] + here->BSIM4v7vds)) >= 0.0)
gspr = gspr * (1.0 + npart_theta * npart_theta * gspr
/ here->BSIM4v7IdovVds);
else
gdpr = gdpr * (1.0 + npart_theta * npart_theta * gdpr
/ here->BSIM4v7IdovVds);
}
else
{ /* tnoiMod=2 (v4.7) */
if (model->BSIM4v7rdsMod == 0)
{ gspr = here->BSIM4v7sourceConductance;
gdpr = here->BSIM4v7drainConductance;
}
else
{ gspr = here->BSIM4v7gstot;
gdpr = here->BSIM4v7gdtot;
}
}
NevalSrc(&noizDens[BSIM4v7RDNOIZ],
&lnNdens[BSIM4v7RDNOIZ], ckt, THERMNOISE,
here->BSIM4v7dNodePrime, here->BSIM4v7dNode,
gdpr * m);
NevalSrc(&noizDens[BSIM4v7RSNOIZ],
&lnNdens[BSIM4v7RSNOIZ], ckt, THERMNOISE,
here->BSIM4v7sNodePrime, here->BSIM4v7sNode,
gspr * m);
if (here->BSIM4v7rgateMod == 1)
{ NevalSrc(&noizDens[BSIM4v7RGNOIZ],
&lnNdens[BSIM4v7RGNOIZ], ckt, THERMNOISE,
here->BSIM4v7gNodePrime, here->BSIM4v7gNodeExt,
here->BSIM4v7grgeltd * m);
}
else if (here->BSIM4v7rgateMod == 2)
{
T0 = 1.0 + here->BSIM4v7grgeltd/here->BSIM4v7gcrg;
T1 = T0 * T0;
NevalSrc(&noizDens[BSIM4v7RGNOIZ],
&lnNdens[BSIM4v7RGNOIZ], ckt, THERMNOISE,
here->BSIM4v7gNodePrime, here->BSIM4v7gNodeExt,
here->BSIM4v7grgeltd * m / T1);
}
else if (here->BSIM4v7rgateMod == 3)
{ NevalSrc(&noizDens[BSIM4v7RGNOIZ],
&lnNdens[BSIM4v7RGNOIZ], ckt, THERMNOISE,
here->BSIM4v7gNodeMid, here->BSIM4v7gNodeExt,
here->BSIM4v7grgeltd * m);
}
else
{ noizDens[BSIM4v7RGNOIZ] = 0.0;
lnNdens[BSIM4v7RGNOIZ] =
log(MAX(noizDens[BSIM4v7RGNOIZ], N_MINLOG));
}
bodymode = 5;
if (here->BSIM4v7rbodyMod == 2)
{ if( ( !model->BSIM4v7rbps0Given) ||
( !model->BSIM4v7rbpd0Given) )
bodymode = 1;
else
if( (!model->BSIM4v7rbsbx0Given && !model->BSIM4v7rbsby0Given) ||
(!model->BSIM4v7rbdbx0Given && !model->BSIM4v7rbdby0Given) )
bodymode = 3;
}
if (here->BSIM4v7rbodyMod)
{
if(bodymode == 5)
{
NevalSrc(&noizDens[BSIM4v7RBPSNOIZ],
&lnNdens[BSIM4v7RBPSNOIZ], ckt, THERMNOISE,
here->BSIM4v7bNodePrime, here->BSIM4v7sbNode,
here->BSIM4v7grbps * m);
NevalSrc(&noizDens[BSIM4v7RBPDNOIZ],
&lnNdens[BSIM4v7RBPDNOIZ], ckt, THERMNOISE,
here->BSIM4v7bNodePrime, here->BSIM4v7dbNode,
here->BSIM4v7grbpd * m);
NevalSrc(&noizDens[BSIM4v7RBPBNOIZ],
&lnNdens[BSIM4v7RBPBNOIZ], ckt, THERMNOISE,
here->BSIM4v7bNodePrime, here->BSIM4v7bNode,
here->BSIM4v7grbpb * m);
NevalSrc(&noizDens[BSIM4v7RBSBNOIZ],
&lnNdens[BSIM4v7RBSBNOIZ], ckt, THERMNOISE,
here->BSIM4v7bNode, here->BSIM4v7sbNode,
here->BSIM4v7grbsb * m);
NevalSrc(&noizDens[BSIM4v7RBDBNOIZ],
&lnNdens[BSIM4v7RBDBNOIZ], ckt, THERMNOISE,
here->BSIM4v7bNode, here->BSIM4v7dbNode,
here->BSIM4v7grbdb * m);
}
if(bodymode == 3)
{
NevalSrc(&noizDens[BSIM4v7RBPSNOIZ],
&lnNdens[BSIM4v7RBPSNOIZ], ckt, THERMNOISE,
here->BSIM4v7bNodePrime, here->BSIM4v7sbNode,
here->BSIM4v7grbps * m);
NevalSrc(&noizDens[BSIM4v7RBPDNOIZ],
&lnNdens[BSIM4v7RBPDNOIZ], ckt, THERMNOISE,
here->BSIM4v7bNodePrime, here->BSIM4v7dbNode,
here->BSIM4v7grbpd * m);
NevalSrc(&noizDens[BSIM4v7RBPBNOIZ],
&lnNdens[BSIM4v7RBPBNOIZ], ckt, THERMNOISE,
here->BSIM4v7bNodePrime, here->BSIM4v7bNode,
here->BSIM4v7grbpb * m);
noizDens[BSIM4v7RBSBNOIZ] = noizDens[BSIM4v7RBDBNOIZ] = 0.0;
lnNdens[BSIM4v7RBSBNOIZ] =
log(MAX(noizDens[BSIM4v7RBSBNOIZ], N_MINLOG));
lnNdens[BSIM4v7RBDBNOIZ] =
log(MAX(noizDens[BSIM4v7RBDBNOIZ], N_MINLOG));
}
if(bodymode == 1)
{
NevalSrc(&noizDens[BSIM4v7RBPBNOIZ],
&lnNdens[BSIM4v7RBPBNOIZ], ckt, THERMNOISE,
here->BSIM4v7bNodePrime, here->BSIM4v7bNode,
here->BSIM4v7grbpb * m);
noizDens[BSIM4v7RBPSNOIZ] = noizDens[BSIM4v7RBPDNOIZ] = 0.0;
noizDens[BSIM4v7RBSBNOIZ] = noizDens[BSIM4v7RBDBNOIZ] = 0.0;
lnNdens[BSIM4v7RBPSNOIZ] =
log(MAX(noizDens[BSIM4v7RBPSNOIZ], N_MINLOG));
lnNdens[BSIM4v7RBPDNOIZ] =
log(MAX(noizDens[BSIM4v7RBPDNOIZ], N_MINLOG));
lnNdens[BSIM4v7RBSBNOIZ] =
log(MAX(noizDens[BSIM4v7RBSBNOIZ], N_MINLOG));
lnNdens[BSIM4v7RBDBNOIZ] =
log(MAX(noizDens[BSIM4v7RBDBNOIZ], N_MINLOG));
}
}
else
{ noizDens[BSIM4v7RBPSNOIZ] = noizDens[BSIM4v7RBPDNOIZ] = 0.0;
noizDens[BSIM4v7RBPBNOIZ] = 0.0;
noizDens[BSIM4v7RBSBNOIZ] = noizDens[BSIM4v7RBDBNOIZ] = 0.0;
lnNdens[BSIM4v7RBPSNOIZ] =
log(MAX(noizDens[BSIM4v7RBPSNOIZ], N_MINLOG));
lnNdens[BSIM4v7RBPDNOIZ] =
log(MAX(noizDens[BSIM4v7RBPDNOIZ], N_MINLOG));
lnNdens[BSIM4v7RBPBNOIZ] =
log(MAX(noizDens[BSIM4v7RBPBNOIZ], N_MINLOG));
lnNdens[BSIM4v7RBSBNOIZ] =
log(MAX(noizDens[BSIM4v7RBSBNOIZ], N_MINLOG));
lnNdens[BSIM4v7RBDBNOIZ] =
log(MAX(noizDens[BSIM4v7RBDBNOIZ], N_MINLOG));
}
if(model->BSIM4v7tnoiMod == 2)
{
eta = 1.0 - here->BSIM4v7Vdseff * here->BSIM4v7AbovVgst2Vtm;
T0 = 1.0 - eta;
T1 = 1.0 + eta;
T2 = T1 + 2.0 * here->BSIM4v7Abulk * model->BSIM4v7vtm / here->BSIM4v7Vgsteff;
Leff = pParam->BSIM4v7leff;
Lvsat = Leff * (1.0 + here->BSIM4v7Vdseff / here->BSIM4v7EsatL);
T6 = Leff / Lvsat;
T5 = here->BSIM4v7Vgsteff / here->BSIM4v7EsatL;
T5 = T5 * T5;
gamma = T6 * (0.5 * T1 + T0 * T0 / (6.0 * T2));
T3 = T2 * T2;
T4 = T0 * T0;
T5 = T3 * T3;
delta = (T1 / T3 - (5.0 * T1 + T2) * T4 / (15.0 * T5) + T4 * T4 / (9.0 * T5 * T2)) / (6.0 * T6 * T6 * T6);
T7 = T0 / T2;
epsilon = (T7 - T7 * T7 * T7 / 3.0) / (6.0 * T6);
T8 = here->BSIM4v7Vgsteff / here->BSIM4v7EsatL;
T8 *= T8;
npart_c = model->BSIM4v7rnoic * (1.0 + T8
* model->BSIM4v7tnoic * Leff);
ctnoi = epsilon / sqrt(gamma * delta)
* (2.5316 * npart_c);
npart_beta = model->BSIM4v7rnoia * (1.0 + T8
* model->BSIM4v7tnoia * Leff);
npart_theta = model->BSIM4v7rnoib * (1.0 + T8
* model->BSIM4v7tnoib * Leff);
gamma = gamma * (3.0 * npart_beta * npart_beta);
delta = delta * (3.75 * npart_theta * npart_theta);
GammaGd0 = gamma * here->BSIM4v7noiGd0;
C0 = here->BSIM4v7Coxeff * pParam->BSIM4v7weffCV * here->BSIM4v7nf * pParam->BSIM4v7leffCV;
T0 = C0 / here->BSIM4v7noiGd0;
sigrat = T0 * sqrt(delta / gamma);
}
switch(model->BSIM4v7tnoiMod)
{ case 0:
T0 = here->BSIM4v7ueff * fabs(here->BSIM4v7qinv);
T1 = T0 * tmp + pParam->BSIM4v7leff
* pParam->BSIM4v7leff;
NevalSrc(&noizDens[BSIM4v7IDNOIZ],
&lnNdens[BSIM4v7IDNOIZ], ckt,
THERMNOISE, here->BSIM4v7dNodePrime,
here->BSIM4v7sNodePrime,
(T0 / T1) * model->BSIM4v7ntnoi * m);
break;
case 1:
T0 = here->BSIM4v7gm + here->BSIM4v7gmbs + here->BSIM4v7gds;
T0 *= T0;
igsquare = npart_theta * npart_theta * T0 / here->BSIM4v7IdovVds;
T1 = npart_beta * (here->BSIM4v7gm
+ here->BSIM4v7gmbs) + here->BSIM4v7gds;
T2 = T1 * T1 / here->BSIM4v7IdovVds;
NevalSrc(&noizDens[BSIM4v7IDNOIZ],
&lnNdens[BSIM4v7IDNOIZ], ckt,
THERMNOISE, here->BSIM4v7dNodePrime,
here->BSIM4v7sNodePrime, (T2 - igsquare) * m);
break;
case 2:
T2 = GammaGd0;
T3 = ctnoi * ctnoi;
T4 = 1.0 - T3;
NevalSrc(&noizDens[BSIM4v7IDNOIZ],
&lnNdens[BSIM4v7IDNOIZ], ckt,
THERMNOISE, here->BSIM4v7dNodePrime,
here->BSIM4v7sNodePrime, T2 * T4 * m);
/* Evaluate output noise due to two correlated noise sources */
omega = 2.0 * M_PI * data->freq;
T5 = omega * sigrat;
T6 = T5 * T5;
T7 = T6 / (1.0 + T6);
if (here->BSIM4v7mode >= 0) {
NevalSrc2(&noizDens[BSIM4v7CORLNOIZ],
&lnNdens[BSIM4v7CORLNOIZ], ckt,
THERMNOISE, here->BSIM4v7dNodePrime,
here->BSIM4v7sNodePrime, T2 * T3 * m,
here->BSIM4v7gNodePrime,
here->BSIM4v7sNodePrime,
T2 * T7 * m, 0.5 * M_PI);
}
else
{
NevalSrc2(&noizDens[BSIM4v7CORLNOIZ],
&lnNdens[BSIM4v7CORLNOIZ], ckt,
THERMNOISE, here->BSIM4v7sNodePrime,
here->BSIM4v7dNodePrime, T2 * T3 * m,
here->BSIM4v7gNodePrime,
here->BSIM4v7dNodePrime,
T2 * T7 * m, 0.5 * M_PI);
}
break;
}
NevalSrc(&noizDens[BSIM4v7FLNOIZ], (double*) NULL,
ckt, N_GAIN, here->BSIM4v7dNodePrime,
here->BSIM4v7sNodePrime, (double) 0.0);
switch(model->BSIM4v7fnoiMod)
{ case 0:
noizDens[BSIM4v7FLNOIZ] *= m * model->BSIM4v7kf
* exp(model->BSIM4v7af
* log(MAX(fabs(here->BSIM4v7cd),
N_MINLOG)))
/ (pow(data->freq, model->BSIM4v7ef)
* pParam->BSIM4v7leff
* pParam->BSIM4v7leff
* model->BSIM4v7coxe);
break;
case 1:
Vds = *(ckt->CKTstates[0] + here->BSIM4v7vds);
if (Vds < 0.0)
Vds = -Vds;
Ssi = Eval1ovFNoise(Vds, model, here,
data->freq, ckt->CKTtemp);
T10 = model->BSIM4v7oxideTrapDensityA
* CONSTboltz * ckt->CKTtemp;
T11 = pParam->BSIM4v7weff * here->BSIM4v7nf * pParam->BSIM4v7leff
* pow(data->freq, model->BSIM4v7ef) * 1.0e10
* here->BSIM4v7nstar * here->BSIM4v7nstar;
Swi = T10 / T11 * here->BSIM4v7cd
* here->BSIM4v7cd;
T1 = Swi + Ssi;
if (T1 > 0.0)
noizDens[BSIM4v7FLNOIZ] *= m * (Ssi * Swi) / T1;
else
noizDens[BSIM4v7FLNOIZ] *= 0.0;
break;
}
lnNdens[BSIM4v7FLNOIZ] =
log(MAX(noizDens[BSIM4v7FLNOIZ], N_MINLOG));
if(here->BSIM4v7mode >= 0) { /* bugfix */
NevalSrc(&noizDens[BSIM4v7IGSNOIZ],
&lnNdens[BSIM4v7IGSNOIZ], ckt, SHOTNOISE,
here->BSIM4v7gNodePrime, here->BSIM4v7sNodePrime,
m * (here->BSIM4v7Igs + here->BSIM4v7Igcs));
NevalSrc(&noizDens[BSIM4v7IGDNOIZ],
&lnNdens[BSIM4v7IGDNOIZ], ckt, SHOTNOISE,
here->BSIM4v7gNodePrime, here->BSIM4v7dNodePrime,
m * (here->BSIM4v7Igd + here->BSIM4v7Igcd));
} else {
NevalSrc(&noizDens[BSIM4v7IGSNOIZ],
&lnNdens[BSIM4v7IGSNOIZ], ckt, SHOTNOISE,
here->BSIM4v7gNodePrime, here->BSIM4v7sNodePrime,
m * (here->BSIM4v7Igs + here->BSIM4v7Igcd));
NevalSrc(&noizDens[BSIM4v7IGDNOIZ],
&lnNdens[BSIM4v7IGDNOIZ], ckt, SHOTNOISE,
here->BSIM4v7gNodePrime, here->BSIM4v7dNodePrime,
m * (here->BSIM4v7Igd + here->BSIM4v7Igcs));
}
NevalSrc(&noizDens[BSIM4v7IGBNOIZ],
&lnNdens[BSIM4v7IGBNOIZ], ckt, SHOTNOISE,
here->BSIM4v7gNodePrime, here->BSIM4v7bNodePrime,
m * here->BSIM4v7Igb);
noizDens[BSIM4v7TOTNOIZ] = noizDens[BSIM4v7RDNOIZ]
+ noizDens[BSIM4v7RSNOIZ] + noizDens[BSIM4v7RGNOIZ]
+ noizDens[BSIM4v7RBPSNOIZ] + noizDens[BSIM4v7RBPDNOIZ]
+ noizDens[BSIM4v7RBPBNOIZ]
+ noizDens[BSIM4v7RBSBNOIZ] + noizDens[BSIM4v7RBDBNOIZ]
+ noizDens[BSIM4v7IDNOIZ] + noizDens[BSIM4v7FLNOIZ]
+ noizDens[BSIM4v7IGSNOIZ] + noizDens[BSIM4v7IGDNOIZ]
+ noizDens[BSIM4v7IGBNOIZ] + noizDens[BSIM4v7CORLNOIZ];
lnNdens[BSIM4v7TOTNOIZ] =
log(MAX(noizDens[BSIM4v7TOTNOIZ], N_MINLOG));
*OnDens += noizDens[BSIM4v7TOTNOIZ];
if (data->delFreq == 0.0)
{ /* if we haven't done any previous
integration, we need to initialize our
"history" variables.
*/
for (i = 0; i < BSIM4v7NSRCS; i++)
{ here->BSIM4v7nVar[LNLSTDENS][i] =
lnNdens[i];
}
/* clear out our integration variables
if it's the first pass
*/
if (data->freq ==
job->NstartFreq)
{ for (i = 0; i < BSIM4v7NSRCS; i++)
{ here->BSIM4v7nVar[OUTNOIZ][i] = 0.0;
here->BSIM4v7nVar[INNOIZ][i] = 0.0;
}
}
}
else
{ /* data->delFreq != 0.0,
we have to integrate.
*/
for (i = 0; i < BSIM4v7NSRCS; i++)
{ if (i != BSIM4v7TOTNOIZ)
{ tempOnoise = Nintegrate(noizDens[i],
lnNdens[i],
here->BSIM4v7nVar[LNLSTDENS][i],
data);
tempInoise = Nintegrate(noizDens[i]
* data->GainSqInv, lnNdens[i]
+ data->lnGainInv,
here->BSIM4v7nVar[LNLSTDENS][i]
+ data->lnGainInv, data);
here->BSIM4v7nVar[LNLSTDENS][i] =
lnNdens[i];
data->outNoiz += tempOnoise;
data->inNoise += tempInoise;
if (job->NStpsSm != 0)
{ here->BSIM4v7nVar[OUTNOIZ][i]
+= tempOnoise;
here->BSIM4v7nVar[OUTNOIZ][BSIM4v7TOTNOIZ]
+= tempOnoise;
here->BSIM4v7nVar[INNOIZ][i]
+= tempInoise;
here->BSIM4v7nVar[INNOIZ][BSIM4v7TOTNOIZ]
+= tempInoise;
}
}
}
}
if (data->prtSummary)
{ for (i = 0; i < BSIM4v7NSRCS; i++)
{ /* print a summary report */
data->outpVector[data->outNumber++]
= noizDens[i];
}
}
break;
case INT_NOIZ:
/* already calculated, just output */
if (job->NStpsSm != 0)
{ for (i = 0; i < BSIM4v7NSRCS; i++)
{ data->outpVector[data->outNumber++]
= here->BSIM4v7nVar[OUTNOIZ][i];
data->outpVector[data->outNumber++]
= here->BSIM4v7nVar[INNOIZ][i];
}
}
break;
}
break;
case N_CLOSE:
/* do nothing, the main calling routine will close */
return (OK);
break; /* the plots */
} /* switch (operation) */
} /* for here */
} /* for model */
return(OK);
}
int
RESnoise (int mode, int operation, GENmodel *genmodel, CKTcircuit *ckt,
Ndata *data, double *OnDens)
{
RESmodel *firstModel = (RESmodel *) genmodel;
RESmodel *model;
RESinstance *inst;
char name[N_MXVLNTH];
double tempOutNoise;
double tempInNoise;
double noizDens[RESNSRCS];
double lnNdens[RESNSRCS];
int i;
/* define the names of the noise sources */
static char *RESnNames[RESNSRCS] = {
/* Note that we have to keep the order consistent with the
* strchr definitions in RESdefs.h */
"_thermal", /* Thermal noise */
"_1overf", /* flicker (1/f) noise */
"" /* total resistor noise */
};
for (model = firstModel; model != NULL; model = model->RESnextModel) {
for (inst = model->RESinstances; inst != NULL;
inst = inst->RESnextInstance) {
if (inst->RESowner != ARCHme) continue;
if(!inst->RESnoisy) continue; /* Quiet resistors are skipped */
switch (operation) {
case N_OPEN:
/*
* See if we have to to produce a summary report
* if so, name the noise generator
*/
if (((NOISEAN*)ckt->CKTcurJob)->NStpsSm != 0) {
switch (mode) {
case N_DENS:
for (i=0; i < RESNSRCS; i++) {
(void)sprintf(name,"onoise_%s%s",
inst->RESname, RESnNames[i]);
data->namelist = (IFuid *)
trealloc((char *)data->namelist,
(data->numPlots + 1)*sizeof(IFuid));
if (!data->namelist) return(E_NOMEM);
(*(SPfrontEnd->IFnewUid))(ckt,
&(data->namelist[data->numPlots++]),
(IFuid)NULL,name,UID_OTHER,(void **)NULL);
/* we've added one more plot */
}
break;
case INT_NOIZ:
for (i=0; i < RESNSRCS; i++) {
(void)sprintf(name,"onoise_total_%s%s",
inst->RESname, RESnNames[i]);
data->namelist = (IFuid *)
trealloc((char *)data->namelist,
(data->numPlots + 1)*sizeof(IFuid));
if (!data->namelist) return(E_NOMEM);
(*(SPfrontEnd->IFnewUid))(ckt,
&(data->namelist[data->numPlots++]),
(IFuid)NULL,name,UID_OTHER,(void **)NULL);
/* we've added one more plot */
(void)sprintf(name,"inoise_total_%s%s",
inst->RESname,RESnNames[i]);
data->namelist = (IFuid *)
trealloc((char *)data->namelist,
(data->numPlots + 1)*sizeof(IFuid));
if (!data->namelist) return(E_NOMEM);
(*(SPfrontEnd->IFnewUid))(ckt,
&(data->namelist[data->numPlots++]),
(IFuid)NULL,name,UID_OTHER,(void **)NULL);
/* we've added one more plot */
}
break;
}
}
break;
case N_CALC:
switch (mode) {
case N_DENS:
NevalSrc2(&noizDens[RESTHNOIZ],&lnNdens[RESTHNOIZ],
ckt,THERMNOISE, inst->RESposNode,inst->RESnegNode,
inst->RESconduct * inst->RESm, inst->RESdtemp);
NevalSrc2(&noizDens[RESFLNOIZ],(double*)NULL, ckt,
N_GAIN,inst->RESposNode, inst->RESnegNode,
(double)0.0, (double)0.0);
#if 0
printf("DC current in resistor %s: %e\n",inst->RESname, inst->REScurrent);
#endif
noizDens[RESFLNOIZ] *= inst->RESm * model->RESfNcoef * exp(model->RESfNexp *
log(MAX(fabs(inst->REScurrent),
N_MINLOG))) / data->freq;
lnNdens[RESFLNOIZ] = log(MAX(noizDens[RESFLNOIZ],N_MINLOG));
noizDens[RESTOTNOIZ] = noizDens[RESTHNOIZ] + noizDens[RESFLNOIZ];
lnNdens[RESTOTNOIZ] = log(noizDens[RESTOTNOIZ]);
*OnDens += noizDens[RESTOTNOIZ];
if (data->delFreq == 0.0) {
/* if we haven't done any previous integration, we need to */
/* initialize our "history" variables */
for (i=0; i < RESNSRCS; i++) {
inst->RESnVar[LNLSTDENS][i] = lnNdens[i];
}
/* clear out our integration variable if it's the first pass */
if (data->freq == ((NOISEAN*)ckt->CKTcurJob)->NstartFreq) {
for (i=0; i < RESNSRCS; i++) {
inst->RESnVar[OUTNOIZ][i] = 0.0; /* Clear output noise */
inst->RESnVar[INNOIZ][i] = 0.0; /* Clear input noise */
}
}
} else { /* data->delFreq != 0.0 (we have to integrate) */
/* In order to get the best curve fit, we have to integrate each component separately */
for (i = 0; i < RESNSRCS; i++) {
if (i != RESTOTNOIZ) {
tempOutNoise = Nintegrate(noizDens[i], lnNdens[i],
inst->RESnVar[LNLSTDENS][i], data);
tempInNoise = Nintegrate(noizDens[i] *
data->GainSqInv ,lnNdens[i]
+ data->lnGainInv,
inst->RESnVar[LNLSTDENS][i]
+ data->lnGainInv,
data);
inst->RESnVar[LNLSTDENS][i] = lnNdens[i];
data->outNoiz += tempOutNoise;
data->inNoise += tempInNoise;
if (((NOISEAN*)ckt->CKTcurJob)->NStpsSm != 0) {
inst->RESnVar[OUTNOIZ][i] += tempOutNoise;
inst->RESnVar[OUTNOIZ][RESTOTNOIZ] += tempOutNoise;
inst->RESnVar[INNOIZ][i] += tempInNoise;
inst->RESnVar[INNOIZ][RESTOTNOIZ] += tempInNoise;
}
}
}
}
if (data->prtSummary) {
for (i=0; i < RESNSRCS; i++) { /* print a summary report */
data->outpVector[data->outNumber++] = noizDens[i];
}
}
break;
case INT_NOIZ: /* already calculated, just output */
if (((NOISEAN*)ckt->CKTcurJob)->NStpsSm != 0) {
for (i=0; i < RESNSRCS; i++) {
data->outpVector[data->outNumber++] = inst->RESnVar[OUTNOIZ][i];
data->outpVector[data->outNumber++] = inst->RESnVar[INNOIZ][i];
}
} /* if */
break;
} /* switch (mode) */
break;
case N_CLOSE:
return (OK); /* do nothing, the main calling routine will close */
break; /* the plots */
} /* switch (operation) */
} /* for inst */
} /* for model */
return(OK);
}
