complex model: a script loads two circuits with MOS and
bipolar table models, and run a sequence of dc simulations with switching the circuit.
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*ng_script
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* A somewhat complex example:
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* This script loads two circuits, then selects circuit 1,
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* does three dc simulations, selects circuit 2, does
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* two dc simulations on the bipolar table device.
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* Always do a 'reset' in between to avoid memory leaks.
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* you have to create the bipolar device table first by running
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* the table generator table-generator-q-2d.sp
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.control
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source $inputdir/table-model-bip-2d-1-oc.sp $ circuit 2
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source $inputdir/table-model-mos-2d-2-oc.sp $ circuit 1
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*** analysis type ***
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setcirc 1
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dc V1 -0.1 1.7 0.06 V2 0.3 1.7 0.3
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plot i(Vs)
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plot deriv(i(Vs))
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reset
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dc v2 0 1.7 0.04
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plot i(Vs)
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plot deriv(i(Vs))
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reset
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dc V1 -0.1 1.7 0.06
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plot i(Vs2)
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setcirc 2
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* bipolar model qinn
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dc vce 0 5 0.05 ib 0.2u 1.8u 0.4u
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*plot i(vee)
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*plot v(1) ylimit 0 1
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reset
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* bipolar from table
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dc vce2 0 5 0.05 ib2 0.2u 1.8u 0.4u
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plot dc4.i(vee) i(vee2) title 'table q3, q4 output current (i(vee2)) compared to bjt model (dc1.i(vee))'
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plot dc4.v(1) v(bb) ylimit 0.6 0.8 title 'table q3, q4 input diode (v(bb)) compared to bjt model (dc1.v(1))'
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.endc
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** npn bipolar: table 2D (Vce, Ib) compared to q model
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* bipolar transistor qinn from National Semi op-amp clc409
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* please run the table generator table-generator-q-2d.sp in ngspice to
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* create the table data file qinn-clc409-2d-1.table as required here
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** Circuit Description **
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Q3 2 1 3 QINN
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ib 0 1 2u
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vce 2 0 5
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vee 3 0 0
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xbip cc bb ee tbqnpn
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ib2 0 bb 2u
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vce2 cc 0 1
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vee2 ee 0 0
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* set a simulation temperature
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.options temp=1
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.subckt tbqnpn c b e
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*** table model of npn bipolar transistor ***
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* bip qinn from national op-amp CLC409
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* table values extracted at nominal temperature of 27°C
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* simple behavioral temperature model
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.param fact = 0.05
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.param tgain = 1. + (TEMPER / 27. - 1.) * {fact}
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abip1 %vd(c e) %id(bint e) %id(c e) biptable1
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.model biptable1 table2d (offset=0.0 gain={tgain} order=2 file="qinn-clc409-2d-1.table")
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* CJE=1.632E-13
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Cje b e 1.632E-13
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* CJC=1.720E-13
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Cjc b c 1.720E-13
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* input diode
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Dbe b bint DMOD
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.model DMOD D (bv=5 is=1e-17 n=1.1)
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.ends
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.MODEL QINN NPN
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+ IS =0.166f BF =3.239E+02 NF =1.000E+00 VAF=8.457E+01
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+ IKF=2.462E-02 ISE=2.956E-17 NE =1.197E+00 BR =3.719E+01
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+ NR =1.000E+00 VAR=1.696E+00 IKR=3.964E-02 ISC=1.835E-19
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+ NC =1.700E+00 RB =118 IRB=0.000E+00 RBM=65.1
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+ RC =2.645E+01 CJE=1.632E-13 VJE=7.973E-01
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+ MJE=4.950E-01 TF =1.948E-11 XTF=1.873E+01 VTF=2.825E+00
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+ ITF=5.955E-02 PTF=0.000E+00 CJC=1.720E-13 VJC=8.046E-01
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+ MJC=4.931E-01 XCJC=589m TR =4.212E-10 CJS=629f
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+ MJS=0 KF =2.000E-12 AF =1.000E+00 FC =9.765E-01
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*
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.end
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Code Model Test - 2d Table Model
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* bsim4 transistor dc input and output characteristics
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*
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*
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*** input sources ***
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*
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v1 d 0 DC 0.1
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*
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v2 g 0 DC 1.5
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*
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Vs s 0 0
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Vs2 s2 0 0
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*
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*** table model of mos transistor ***
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amos1 %vd(d s) %vd(g s) %id(d s) mostable1
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.model mostable1 table2d (offset=0.0 gain=0.5 order=3 file="bsim4n-2d-3.table")
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* L=0.13u W=10.0u rgeoMod=1
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* BSIM 4.7
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* change width of transistor by modifying parameter "gain"
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* source is always tied to bulk (2d model!)
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amos2 %vd(d s2) %vd(d s2) %id(d s2) mostable1
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.end
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