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mos1...3: Beta in noise w/o channel length modulation

This commit is contained in:
dwarning 2024-01-28 20:11:52 +01:00
parent 6359b7b41f
commit 9ed7a24a0e
3 changed files with 9 additions and 12 deletions
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7
src/spicelib/devices/mos1/mos1noi.c
View File

@ -111,8 +111,6 @@ MOS1noise(int mode, int operation, GENmodel * genmodel, CKTcircuit * ckt,
vds = *(ckt->CKTstate0 + inst->MOS1vds);
vgs = *(ckt->CKTstate0 + inst->MOS1vgs);
vgd = vgs - vds;
beta = inst->MOS1tTransconductance * inst->MOS1m *
inst->MOS1w/(inst->MOS1l - 2 * model->MOS1latDiff);
vgst=(inst->MOS1mode==1?vgs:vgd) - model->MOS1type*inst->MOS1von;
if (vgst > 0) {
@ -124,8 +122,9 @@ MOS1noise(int mode, int operation, GENmodel * genmodel, CKTcircuit * ckt,
alpha = 1.0 - (vds*inst->MOS1mode/(model->MOS1type*inst->MOS1vdsat));
}
}
double betap = beta*(1.0+model->MOS1lambda*(vds*inst->MOS1mode));
Sid = 2.0 / 3.0 * betap * vgst * (1.0+alpha+alpha*alpha) / (1.0+alpha) * model->MOS1gdsnoi;
beta = inst->MOS1tTransconductance * inst->MOS1m *
inst->MOS1w/(inst->MOS1l - 2 * model->MOS1latDiff);
Sid = 2.0 / 3.0 * beta * vgst * (1.0+alpha+alpha*alpha) / (1.0+alpha) * model->MOS1gdsnoi;
}
NevalSrc( & noizDens[MOS1IDNOIZ], & lnNdens[MOS1IDNOIZ],

7
src/spicelib/devices/mos2/mos2noi.c
View File

@ -100,8 +100,6 @@ MOS2noise(int mode, int operation, GENmodel * genmodel, CKTcircuit * ckt,
vds = *(ckt->CKTstate0 + inst->MOS2vds);
vgs = *(ckt->CKTstate0 + inst->MOS2vgs);
vgd = vgs - vds;
beta = inst->MOS2tTransconductance * inst->MOS2m *
inst->MOS2w/(inst->MOS2l - 2 * model->MOS2latDiff);
vgst=(inst->MOS2mode==1?vgs:vgd) - model->MOS2type*inst->MOS2von;
if (vgst > 0) {
@ -113,8 +111,9 @@ MOS2noise(int mode, int operation, GENmodel * genmodel, CKTcircuit * ckt,
alpha = 1.0 - (vds*inst->MOS2mode/(model->MOS2type*inst->MOS2vdsat));
}
}
double betap = beta*(1.0+model->MOS2lambda*(vds*inst->MOS2mode));
Sid = 2.0 / 3.0 * betap * vgst * (1.0+alpha+alpha*alpha) / (1.0+alpha) * model->MOS2gdsnoi;
beta = inst->MOS2tTransconductance * inst->MOS2m *
inst->MOS2w/(inst->MOS2l - 2 * model->MOS2latDiff);
Sid = 2.0 / 3.0 * beta * vgst * (1.0+alpha+alpha*alpha) / (1.0+alpha) * model->MOS2gdsnoi;
}
NevalSrc( & noizDens[MOS2IDNOIZ], & lnNdens[MOS2IDNOIZ],

7
src/spicelib/devices/mos3/mos3noi.c
View File

@ -100,8 +100,6 @@ MOS3noise(int mode, int operation, GENmodel * genmodel, CKTcircuit * ckt,
vds = *(ckt->CKTstate0 + inst->MOS3vds);
vgs = *(ckt->CKTstate0 + inst->MOS3vgs);
vgd = vgs - vds;
beta = inst->MOS3tTransconductance * inst->MOS3m *
inst->MOS3w/(inst->MOS3l - 2 * model->MOS3latDiff);
vgst=(inst->MOS3mode==1?vgs:vgd) - model->MOS3type*inst->MOS3von;
if (vgst > 0) {
@ -113,8 +111,9 @@ MOS3noise(int mode, int operation, GENmodel * genmodel, CKTcircuit * ckt,
alpha = 1.0 - (vds*inst->MOS3mode/(model->MOS3type*inst->MOS3vdsat));
}
}
double betap = beta;
Sid = 2.0 / 3.0 * betap * vgst * (1.0+alpha+alpha*alpha) / (1.0+alpha) * model->MOS3gdsnoi;
beta = inst->MOS3tTransconductance * inst->MOS3m *
inst->MOS3w/(inst->MOS3l - 2 * model->MOS3latDiff);
Sid = 2.0 / 3.0 * beta * vgst * (1.0+alpha+alpha*alpha) / (1.0+alpha) * model->MOS3gdsnoi;
}
NevalSrc( & noizDens[MOS3IDNOIZ], & lnNdens[MOS3IDNOIZ],