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sci / sci.electronics.cad / Re: LTSpice simulation error using downloaded BF998 model from NXP

Subject: Re: LTSpice simulation error using downloaded BF998 model from NXP
From: Jones Joy Panicker
Newsgroups: sci.electronics.cad
Date: Tue, 18 Jan 2022 08:27 UTC
References: 1 2

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Subject: Re: LTSpice simulation error using downloaded BF998 model from NXP
From: jonespanicker@gmail.com (Jones Joy Panicker)
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Found this useful after six years. Thanks!

On Sunday, June 15, 2014 at 9:38:05 PM UTC+1, m...@iae.nl wrote:
> L=0.12n should simply be "0.12n".
> Vg1 is missing a dc value.
> What's that .prm file?
> The .asy file should link to the bf998.sub.
>
> Works for me.
>
> -marcel
>
> -- bf998.sub ---------------------------------------------------
> * BF998 SPICE MODEL OCTOBER 1993 PHILIPS SEMICONDUCTORS
> * ENVELOPE SOT143 (R)
> * 1.: SOURCE; 2.: DRAIN; 3.: GATE 2; 4.: GATE 1;
> .SUBCKT BF998 1 2 3 4
> L10 1 10 0.12N
> L20 2 20 0.12N
> L30 3 30 0.12N
> L40 4 40 0.12N
> L11 10 11 1.20N
> L21 20 21 1.20N
> L31 30 31 1.20N
> L41 40 41 1.20N
> C13 10 30 0.085P
> C14 10 40 0.085P
> C23 20 30 0.085P
> C24 20 40 0.005P
> D11 42 11 ZENER
> D12 42 41 ZENER
> D21 32 11 ZENER
> D22 32 31 ZENER
> RS 10 12 100
> MOS1 61 41 11 12 GATE1 L=1.1E-6 W=1150E-6
> MOS2 21 31 61 12 GATE2 L=2.0E-6 W=1150E-6
> .MODEL ZENER D BV=10 CJO=1.2E-12 RS=10
> .MODEL GATE1
> + NMOS LEVEL=3 UO=600 VTO=-0.250 NFS=300E9 TOX=42E-9
> + NSUB=3E15 VMAX=140E3 RS=2.0 RD=2.0 XJ=200E-9 THETA=0.11
> + ETA=0.06 KAPPA=2 LD=0.1E-6
> + CGSO=0.3E-9 CGDO=0.3E-9 CBD=0.5E-12 CBS=0.5E-12
> .MODEL GATE2
> + NMOS LEVEL=3 UO=600 VTO=-0.250 NFS=300E9 TOX=42E-9
> + NSUB=3E15 VMAX=100E3 RS=2.0 RD=2.0 XJ=200E-9 THETA=0.11
> + ETA=0.06 KAPPA=2 LD=0.1E-6
> + CGSO=0.3E-9 CGDO=0.3E-9 CBD=0.5E-12 CBS=0.5E-12
> .ENDS BF998
> -- test.net --------------
> * C:\spice\mhx\bf998\test.asc
> VG2 N002 0 4 Rser=0
> VG1 N003 0 0.1
> VDS N001 0 5 Rser=0
> XU1 N001 0 N002 N003 BF998
> .dc VG1 -1 1 0.1
> .lib BF998.sub
> .backanno
> .end

Subject	Author
Re: LTSpice simulation error using downloaded BF998 model from NXP	Jones Joy Panicker