--- In LTspice@..., "Hao Fu" <fuhao@y...> wrote:
Helmut,
I tried to run a simple inverter with that level 3 model, it has
the
same convergence problem. Here is the error message:
Hello Hao,
this inverter has absolutely no problem in LTSPICE. May be you have
selected some "bad" options in the control panel of LTSPICE. Please
reset all options to its default values.
Control Panel->SPICE->Reset fo Defaults
Control Panel->Hacks-> Reset to Defaults
You must use the latest LTSPICE version 2.03f.
Then run the simulation and plot V(out) and Id(M1).
Please tell me your findings compared to HSPICE or even better send
me the plot from HSPICE of V(out) and Id(M1).
email: HelmutSennewald@...
I have attached my/your model file transistors.txt.
Best Regards
Helmut
Included file MOS models transistors.txt
----------------------------------------
* Level 3 BSIM MOSFET Models
.MODEL NMOS NMOS LEVEL=3 PHI=0.7 TOX=9.5E-09 XJ=0.2U TPG=1
+ VTO=0.7 DELTA=8.8E-01 LD=5E-08 KP=1.56E-04
+ UO=420 THETA=2.3E-01 RSH=2.0E+00 GAMMA=0.62
+ NSUB=1.40E+17 NFS=7.20E+11 VMAX=1.8E+05 ETA=2.125E-02
+ KAPPA=1E-01 CGDO=3.0E-10 CGSO=3.0E-10
+ CGBO=4.5E-10 CJ=5.50E-04 MJ=0.6 CJSW=3E-10
+ MJSW=0.35 PB=1.1
* Level 3 BSIM MOSFET Models
.MODEL PMOS PMOS LEVEL=3
+ PHI=0.7
+ TOX=9.5E-09
+ XJ=2E-7
+ TPG=-1
+ VTO=-0.95
+ DELTA=2.5E-01
+ LD=7E-08
+ KP=4.8E-05
+ UO=130
+ THETA=2.0E-01
+ RSH=2.5E00
+ GAMMA=0.52
+ NSUB=1.0E17
+ NFS=6.50E11
+ VMAX=3.0E05
+ ETA=0.02
+ KAPPA=8.0
+ CGDO=3.5E-10
+ CGSO=3.5E-10
+ CGBO=4.5E-10
+ CJ=9.50E-04
+ MJ=0.5
+ CJSW=2E-10
+ MJSW=0.25
+ PB=1
* Simple inverter measurement
.include 'transistors.txt'
* include this to use mwaves on the output!
.options itl6=400
.temp 25
.global vdd gnd
.param vdd = 3.5V
+ cload = 0.1fF
+ os = 3.2u
+ cm = 2.5
+ wn = 16u
+ wp = 40u
* circuit. This is in netlist format.
vdd vdd gnd 'vdd'
vcm in gnd dc 'cm'
*vos1 cm os1 dc 'os/2'
*vos2 os2 cm dc 'os/2'
M1 out in gnd gnd nmos W='wn' L='0.5u'
+AD='1.5u*wn' PD='2*(1.5u+wn)' AS='1.5u*wn' PS='2*
(1.5u+wn)'
M2 out in vdd vdd pmos W='wp' L='0.5u'
+AD='1.5u*wp' PD='2*(1.5u+wp)' AS='1.5u*wp' PS='2*
(1.5u+wp)'
Cload out gnd 'cload'
* Simulation
.op
.dc vcm 0 3.5 0.01
*.step lin param os 3u 3.5u 0.1u
.end
