Finding SPICE Models

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Jump to Latest
jan.didden

jan.didden

AX tech editor
Joined 2002
linearaudio.net
Paid Member
Re: Modelling

Grumpy_Git said:
Does any one know where to get hold of a full version of a program such as "Spice Mod" from the makers of ICAP4.

I this program or an equivalent badly, but the demo version is far too limited and I can't afford it.

Any help would be great.

Nick.
Click to expand...

Nick, I have a copy of an older (DOS) version. I still use it, it seems to work quite well. If you send me your email address I'l send it to you as a .zip.

Jan Didden
 
W

Werner

Member
Joined 2002
Re: any good JFET models available???

mlloyd1 said:
can anybody point to (or send) models of Toshiba's 2SK170 and 2SJ74?
Click to expand...

As usual, use with care and stay suspicious, as these are only
models, not super models ...

.model J2sj74 PJF(Beta=92.12m Rs=7.748 Rd=7.748 Betatce=-.5 Lambda=4.464m
+ Vto=-.5428 Vtotc=-2.5m Cgd=85.67p M=.3246 Pb=.3905 Fc=.5
+ Cgs=78.27p Isr=129.8p Nr=2 Is=12.98p N=1 Xti=3 Alpha=10u Vk=100
+ Kf=26.64E-18 Af=1)

*SRC=2SJ74;J2SJ74;JFETs P;Gen. Purpose;25 V 20MA
.MODEL J2SJ74 PJF (VTO=-1.1 BETA=20M LAMBDA=1.2M RD=4.95
+ RS=4.45 IS=6.32F PB=1 FC=.5 CGS=52.5P CGD=115P)
* Toshiba 25 Volt 20M Amp 35.3 ohm Dep-Mode P-Channel J-FET 11-18-1993



.model J2sk170 NJF(Beta=59.86m Rs=4.151 Rd=4.151 Betatce=-.5 Lambda=1.923m
+ Vto=-.5024 Vtotc=-2.5m Cgd=20p M=.3805 Pb=.4746 Fc=.5
+ Cgs=25.48p Isr=84.77p Nr=2 Is=8.477p N=1 Xti=3 Alpha=10u Vk=100
+ Kf=111.3E-18 Af=1)



*SRC=2SK170;J2SK170;JFETs N;Gen. Purpose;40V 20MA 35.3Ohm
.MODEL J2SK170 NJF (VTO=-.7 BETA=21M LAMBDA=19.95M RD=3.85
+ RS=2.35 IS=3.95F PB=1 FC=.5 CGS=85.4P CGD=22.7P)
* 40 Volt 20M Amp 35.3 ohm Dep-Mode N-Channel J-FET 12-10-1993





.model 2sk170 NJF
+ VTO=-5.211e-001 BETA=3.683e-002 LAMBDA=4.829e-003
+ IS=1.000e-009, RD=0.000e+000 RS=0.000e+000
+ CGS=5.647e-011 CGD=2.562e-011
+ PB=4.860e+000 FC=0.5



.model J2sk389 NJF(Beta=51.76m Rs=8.008 Rd=8.008 Betatce=-.5 Lambda=11.22m
+ Vto=-.5275 Vtotc=-2.5m Cgd=18.28p M=.3367 Pb=.3905 Fc=.5
+ Cgs=20.07p Isr=112.8p Nr=2 Is=11.28p N=1 Xti=3 Alpha=10u Vk=100
+ Kf=92.85E-18 Af=1)



.model J2sk369 NJF(Beta=82.61m Rs=1.556 Rd=1.556 Betatce=-.5 Lambda=414.5u
+ Vto=-.3552 Vtotc=-2.5m Cgd=46.72p M=.3623 Pb=.3905 Fc=.5
+ Cgs=70.51p Isr=86.47p Nr=2 Is=8.647p N=1 Xti=3 Alpha=10u Vk=100
+ Kf=74.85E-18 Af=1)







c394281442s.jpg
 
C

Christer

Member
Joined 2002
jarek said:


Hugo,
Sory, these models do not work properly :(
I think, there are missing some properties..
Click to expand...

Maybe you should complain to me, since it turned out to be
the models I once made myself and posted once or twice
on the forum and which seem to have migrated to Russia,
where Hugo found them. :)

You are quite right they are incomplete. There are many more
parameters one can specify for a BJT, but I didn't have the
patience to or any clue how to (can't remember which now :) )
figure out the other parameters. Anyway, I once needed
models for the A1837, C4793 and some otheres, but couldn't
find any models either here or on the rest of the internet. Many
have asked for models on the forum, including myself, but
nobody ever seemed to have any models to post. I eventually
tried to DIY my own models using my semiconductor physics
book and the datasheets. The models come as is, with no
guarantees that the parameters are reasonable, although
I tried to get a decent black-box behaviour from them. I could
find no way, either in theory or in practice, to select the
parameters to give a decent match for all the most important
graphs simultaneously, so I settled on a compromise. It doesn't
match any graph really well, but I avoided mismatching either
of them terribly. The models are in particular not suited
to be used for the saturation or quasi-saturation regions, but
that's not what usually do in audio anyway. Note however,
that (almost) all offcial models for other BJTs I have tried
are as bad or even much worse than these models, except
for usually having some more parameters specified.

It would be appreciated by myself, and probably many others,
if somebody tries to improve on these models.
 
J

jarek

Member
Joined 2002
Lately I spent a little time on modelling in Model Editor. Here your are my models for 2SA1837 and 2SC4793. I do not give any guaranty that they are strictly correct, but for my amateur needs are good enough. Or maybe I am wrong.. :(

.MODEL Q2SA1837 PNP
+ IS=1.7671E-12
+ BF=160.54
+ VAF=500
+ IKF=1.7316
+ ISE=38.620E-12
+ NE=1.7292
+ BR=3.9832
+ VAR=100
+ IKR=1.6615
+ ISC=108.00E-12
+ NC=1.4213
+ NK=.83004
+ RB=1.0611
+ RC=.23351
+ CJE=2.0000E-12
+ CJC=72.874E-12
+ MJC=.33333
+ TF=1.6596E-9
+ XTF=.61407
+ VTF=36.102
+ ITF=.70845
+ TR=10.000E-9

.MODEL Q2SC4793 NPN
+ IS=1.8747E-12
+ BF=109.30
+ VAF=500
+ IKF=4.9998
+ ISE=4.0382E-12
+ NE=1.5341
+ BR=.35724
+ VAR=100
+ IKR=1.1273
+ ISC=14.741E-12
+ NC=2.2201
+ NK=.7652
+ RB=1.5379
+ RC=.19892
+ CJE=2.0000E-12
+ CJC=48.582E-12
+ MJC=.33333
+ TF=1.7700E-9
+ XTF=.61
+ VTF=30
+ ITF=.7
+ TR=10.000E-9
 
C

ChocoHolic

Member
Joined 2003
still not satisfied

:angel: :angel: :angel: :angel:

Thanks to Ole!
The libraries are working fine.
Also great that they incorporate the SC2922 and 2SA1216!

Unfortunately I seem to love exotic types.
Especially some PNP and P-Chanel types I am still missing.

My librabries offer the NPN 2SC5171 and N-Chanel 2SK1530,
but the corresponding complementary types are missing.
Is there anybody who has ORCAD libraries which include
2SA1930 and 2SJ201 ?

Cheers
Markus
 
lineup

lineup

Member
Joined 2005
2SA1216 and 2SC2922 spice model

ChocoHolic said:

Thanks to Ole!
The libraries are working fine.
Also great that they incorporate the SC2922 and 2SA1216!

Unfortunately I seem to love exotic types.
Especially some PNP and P-Chanel types I am still missing.

My librabries offer the NPN 2SC5171 and N-Chanel 2SK1530,
but the corresponding complementary types are missing.
Is there anybody who has ORCAD libraries which include
2SA1930 and 2SJ201 ?

Cheers
Markus
Click to expand...

Orcad SPICE models
* $Date: 17 Nov 1998 10:48:24 $
*
* ---------------------------------------------------------------------------
* The parameters in this model library were derived from the data sheets for
* each part. Each part was characterized using the Parts option.
* ---------------------------------------------------------------------------

.model Q2sc2922 NPN(Is=122.9n Xti=3 Eg=1.11 Vaf=100 Bf=87.13 Ise=122.9n
+ Ne=1.677 Ikf=99.99 Nk=1.384 Xtb=1.5 Var=100 Br=1 Isc=0 Nc=2
+ Ikr=0 Rc=0 Cjc=2p Mjc=.3333 Vjc=.75 Fc=.5 Cje=5p Mje=.3333
+ Vje=.75 Tr=2.581u Tf=4.584n Itf=6.76K Xtf=42.56K Vtf=10)

.model Q2sa1216 PNP(Is=7.795p Xti=3 Eg=1.11 Vaf=100 Bf=90.76 Ise=79.57p
+ Ne=1.483 Ikf=11.97 Nk=.3815 Xtb=1.5 Var=100 Br=1 Isc=0 Nc=2
+ Ikr=0 Rc=0 Cjc=2p Mjc=.3333 Vjc=.75 Fc=.5 Cje=5p Mje=.3333
+ Vje=.75 Tr=1.39u Tf=6.323n Itf=2.833 Xtf=0 Vtf=10)
*
Click to expand...

Regards, lineup
 
C

Christer

Member
Joined 2002
Spice model for LM6171

Does anybody have a Spice model for LM6171, or at least a model of the transfer function?

The dominating pole seems not possible to extract at all from the datasheet, since the relevant diagrams don't go low enough in frequency. OTOH, that pole is of less intererst. Judging from the open loop diagram, there also seems to be a zero somewhere in the vicinity of 10 MHz and two poles somewhere in the vicinity of 100-200 MHz. I can't quite get it right, though, and mimic the datasheet quite as close as I would like to, so maybe there are more poles and zeroes involved?
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Top Bottom