CMOS simple and slow OpAmp example
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Holger Vogt
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cf72e76607
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.title KiCad schematic
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.include "cmos_sub.mod"
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.include "seegen4.mod"
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V1 Vcc 0 DC 3.3
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XU1 VGP2 VGP4P8 Vbias VSN4N8 seegen4
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XMN9 Vbias Vbias 0 0 NCH W=5u L=1.4u
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V5 in+ 0 DC 1.65
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R1 out in- 100k
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R2 in in- 20k
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V4 in 0 DC 1.65 SIN( 1.65 100m 1k 0 0 0 ) AC 1
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XMN3 out Vbias 0 0 NCH W=17.4u L=1.4u
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C2 out 0 2p
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XMP2 out VGP2 Vcc Vcc PCH W=14.5u L=1.4u
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C1 VGP2 out 1.2p
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XMP4 VGP4P8 VGP4P8 Vcc Vcc PCH W=2.8u L=1.4u
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I1 Vcc Vbias 12u
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XMN4 VGP4P8 in- VSN4N8 0 NCH W=2.8u L=1.4u
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XMN8 VGP2 in+ VSN4N8 0 NCH W=2.8u L=1.4u
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XMN2 VSN4N8 Vbias 0 0 NCH W=5u L=1.4u
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XMP8 VGP2 VGP4P8 Vcc Vcc PCH W=2.8u L=1.4u
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.control
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set xbrushwidth=2
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tran 20n 2m
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plot v(VGP4P8)
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plot in out
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ac dec 10 1 1Meg
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plot db(out)
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.endc
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.end
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* subcircuit model file
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.include modelcard.nmos
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.include modelcard.pmos
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.subckt NCH D G S B W=1 L=1
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MN1 D G S B N1 W={W} L={L} AS={3*L*W} AD={3*L*W} PS={6*L+W} AS={6*L+W}
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.ends
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.subckt PCH D G S B W=1 L=1
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MP1 D G S B P1 W={W} L={L} AS={3*L*W} AD={3*L*W} PS={6*L+W} AS={6*L+W}
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.ends
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*model = bsim3v3
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*Berkeley Spice Compatibility
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*http://bsim.berkeley.edu/BSIM4/BSIM3/ftpv330.zip
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* Lmin= .35 Lmax= 20 Wmin= .6 Wmax= 20
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.model N1 NMOS
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+Level= 8
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+version=3.3.0
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+Tnom=27.0
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+Acnqsmod=1 elm=3
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+Capmod=3
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+Nch= 2.498E+17 Tox=9E-09 Xj=1.00000E-07
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+Lint=9.36e-8 Wint=1.47e-7
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+Lintnoi=1e-9
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+Vth0= .6322 K1= .756 K2= -3.83e-2 K3= -2.612
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+Dvt0= 2.812 Dvt1= 0.462 Dvt2=-9.17e-2
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+Nlx= 3.52291E-08 W0= 1.163e-6
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+K3b= 2.233
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+Vsat= 86301.58 Ua= 6.47e-9 Ub= 4.23e-18 Uc=-4.706281E-11
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+Rdsw= 650 U0= 388.3203 wr=1
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+A0= .3496967 Ags=.1 B0=0.546 B1= 1
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+Dwg = -6.0E-09 Dwb = -3.56E-09 Prwb = -.213
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+Keta=-3.605872E-02 A1= 2.778747E-02 A2= .9
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+Voff=-6.735529E-02 NFactor= 1.139926 Cit= 1.622527E-04
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+Cdsc=-2.147181E-05
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+Cdscb= 0 Dvt0w = 0 Dvt1w = 0 Dvt2w = 0
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+Cdscd = 0 Prwg = 0
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+Eta0= 1.0281729E-02 Etab=-5.042203E-03
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+Dsub= .31871233
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+Pclm= 1.114846 Pdiblc1= 2.45357E-03 Pdiblc2= 6.406289E-03
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+Drout= .31871233 Pscbe1= 5000000 Pscbe2= 5E-09 Pdiblcb = -.234
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+Pvag= 0 delta=0.01
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+ Wl = 0 Ww = -1.420242E-09 Wwl = 0
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+ Wln = 0 Wwn = .2613948 Ll = 1.300902E-10
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+ Lw = 0 Lwl = 0 Lln = .316394
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+ Lwn = 0
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+kt1=-.3 kt2=-.051
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+At= 22400
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+Ute=-1.48
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+Ua1= 3.31E-10 Ub1= 2.61E-19 Uc1= -3.42e-10
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+Kt1l=0 Kt1=-0.1 Prt=764.3
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*model = bsim3v3
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*Berkeley Spice Compatibility
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*http://bsim.berkeley.edu/BSIM4/BSIM3/ftpv330.zip
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* Lmin= .35 Lmax= 20 Wmin= .6 Wmax= 20
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.model P1 PMOS
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+Level= 8
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+version=3.3.0
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+Tnom=27.0
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+Acnqsmod=1 elm=3
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+Nch= 3.533024E+17 Tox=9E-09 Xj=1.00000E-07
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+Lint=6.23e-8 Wint=1.22e-7
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+Lintnoi=1e-9
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+Vth0=-.6732829 K1= .8362093 K2=-8.606622E-02 K3= 1.82
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+Dvt0= 1.903801 Dvt1= .5333922 Dvt2=-.1862677
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+Nlx= 1.28e-8 W0= 2.1e-6
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+K3b= -0.24 Prwg=-0.001 Prwb=-0.323
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+Vsat= 103503.2 Ua= 1.39995E-09 Ub= 1.e-19 Uc=-2.73e-11
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+ Rdsw= 460 U0= 138.7609
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+A0= .4716551 Ags=0.12
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+Keta=-1.871516E-03 A1= .3417965 A2= 0.83
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+Voff=-.074182 NFactor= 1.54389 Cit=-1.015667E-03
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+Cdsc= 8.937517E-04
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+Cdscb= 1.45e-4 Cdscd=1.04e-4
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+ Dvt0w=0.232 Dvt1w=4.5e6 Dvt2w=-0.0023
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+Eta0= 6.024776E-02 Etab=-4.64593E-03
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+Dsub= .23222404
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+Pclm= .989 Pdiblc1= 2.07418E-02 Pdiblc2= 1.33813E-3
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+Drout= .3222404 Pscbe1= 118000 Pscbe2= 1E-09
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+Pvag= 0
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+kt1= -0.25 kt2= -0.032 prt=64.5
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+At= 33000
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+Ute= -1.5
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+Ua1= 4.312e-9 Ub1= 6.65e-19 Uc1= 0
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+Kt1l=0
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@ -0,0 +1,9 @@
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* SEE generator model
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.subckt seegen4 n1 n2 n3 n4
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.param tochar = 1e-13
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.param talpha = 500p tbeta=20p
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.param Inull = 'tochar/(talpha-tbeta)'
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* Eponential current source without control input
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aseegen1 NULL [%i(n1) %i(n2) %i(n3) %i(n4)] seemod1
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.model seemod1 seegen (tdelay = 0.62m tperiod=0.1m inull='Inull' perlim=FALSE)
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.ends
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