Macromodel for the 741

1. AC Linear Macromodel of the 741 operational amplifier



(Ref: Macromodeling with Spice, by J.A. Connelly/P. Choi)
    * Subcircuit for 741 opamp
    .subckt opamp741 1 2 3
    * +in (=1) -in (=2) out (=3)
    rin 1 2 2meg
    rout 6 3 75
    e 4 0 1 2 100k
    rbw 4 5 0.5meg
    cbw 5 0 31.85nf
    eout 6 0 5 0 1
    .ends opamp741
This subcircuit models the 741 opamp with resistors, capacitors and dependent voltage sources. The specs of the opams are as follows:
    Input resistance=2 MegaOhm,
    Output resistance=75 Ohm,
    Open loop gain=1E5 (100 dB)
    Gain-bandwith product of 1MHz or a bandwidth of 10 Hz.
This is a linear model and hence does not model slewing of the operational amplifier.




2. Diode Model: 1N4148


    .model D1N4148 D (IS=0.1PA, RS=16 CJO=2PF TT=12N BV=100 IBV=0.1PA)


3. NPN Transistors

    1N2222A NPN Transistor 
    .model Q2N2222A NPN (IS=14.34F  XTI=3  EG=1.11  VAF= 74.03  BF=255.9  
+NE=1.307  ISE=14.34F  IKF=.2847  XTB=1.5  BR=6.092  NC=2  ISC=0  IKR=0  
+RC=1  CJC=7.306P  MJC=.3416  VJC=.75  FC=.5  CJE=22.01P  MJE=.377  
+VJE=.75  TR=46.91N  TF=411.1P  ITF=.6  VTF=1.7  XTF=3  RB=10)
    2N696 NPN Transistor 
    .model Q2N696 NPN (IS=14.34F  XTI=3  EG=1.11  VAF= 74.03  BF=65.62  
+NE=1.208  ISE=19.48F  IKF=.2385  XTB=1.5  BR=9.715  NC=2  ISC=0  IKR=0  
+RC=1  CJC=9.393P MJC=.3416  VJC=.75  FC=.5  CJE=22.01P  MJE=.377  
+VJE=.75  TR=58.98N  TF=408.8P  ITF=.6  VTF=1.7  XTF=3  RB = 10)
    Note: A continuation sign + has been added at the beginning of a new line in the model statements.


4. MOSIS SPICE model parameters

1.2 micron CMOS model (Level 3)
For a description of the parameters see SPICE MODEL PARAMETERS OF MOSFETS
Typical parameters

    NMOS 
    .MODEL CMOSN NMOS LEVEL=3 PHI=0.600000 TOX=2.1200E-08 XJ=0.200000U   
+TPG=1 VTO=0.7860 DELTA=6.9670E-01 LD=1.6470E-07 KP=9.6379E-05
+UO=591.7 THETA=8.1220E-02 RSH=8.5450E+01 GAMMA=0.5863
+NSUB=2.7470E+16 NFS=1.98E+12 VMAX=1.7330E+05 ETA=4.3680E-02
+KAPPA=1.3960E-01 CGDO=4.0241E-10 CGSO=4.0241E-10
+CGBO=3.6144E-10 CJ=3.8541E-04 MJ=1.1854 CJSW=1.3940E-10
+MJSW=0.125195 PB=0.800000

    PMOS 
    .MODEL CMOSP PMOS LEVEL=3 PHI=0.600000 TOX=2.1200E-08 XJ=0.200000U 
+TPG=-1 VTO=-0.9056 DELTA=1.5200E+00 LD=2.2000E-08 KP=2.9352E-05
+UO=180.2 THETA=1.2480E-01 RSH=1.0470E+02 GAMMA=0.4863
+NSUB=1.8900E+16 NFS=3.46E+12 VMAX=3.7320E+05 ETA=1.6410E-01
+KAPPA=9.6940E+00 CGDO=5.3752E-11 CGSO=5.3752E-11
+CGBO=3.3650E-10 CJ=4.8447E-04 MJ=0.5027 CJSW=1.6457E-10
+MJSW=0.217168 PB=0.850000
Note: A continuation sign + has been added at the beginning of a new line in the model statements.
Maximum parameters

    NMOS 
    .MODEL CMOSN NMOS LEVEL=3
PHI=0.600000 TOX=2.1500E-08 XJ=0.200000U +TPG=1 VTO=0.8063
DELTA=9.4090E-01 LD=1.3540E-07 KP=1.0877E-04 +UO=680.4
THETA=8.3620E-02 RSH=109.3 GAMMA=0.5487 +NSUB=2.3180E+16 NFS=1.98E+12
VMAX=1.8700E+05 ETA=5.5740E-02 +KAPPA=5.9210E-02 CGDO=3.2469E-10
CGSO=3.2469E-10 +CGBO=3.7124E-10 CJ=3.1786E-04 MJ=1.0148
CJSW=1.3284E-10 +MJSW=0.119521 PB=0.800000

    PMOS 
    .MODEL CMOSP PMOS LEVEL=3 PHI=0.600000
TOX=2.1500E-08 XJ=0.200000U +TPG=-1VTO=-0.9403 DELTA=8.5790E-01
LD=1.1650E-09 KP=3.4276E-05 +UO=214.4 THETA=1.4010E-01 RSH=122.2
GAMMA=0.5615 +NSUB=2.4270E+16 NFS=3.46E+12 VMAX=3.9310E+05
ETA=1.5670E-01 +KAPPA=9.9990E+00 CGDO=2.7937E-12 CGSO=2.7937E-12
+CGBO=3.5981E-10 CJ=4.5952E-04 MJ=0.4845 CJSW=2.7917E-10
+MJSW=0.365250 PB=0.850000
Minimum parameters

    NMOS 
    .MODEL CMOSN NMOS LEVEL=3
PHI=0.600000 TOX=2.0500E-08 XJ=0.200000U +TPG=1 VTO=0.8147
DELTA=3.0170E-05 LD=1.7540E-07 KP=8.9765E-05 +UO=532.9
THETA=9.0470E-02 RSH=1.5870E+01 GAMMA=0.6654 +NSUB=3.7840E+16
NFS=5.5000E+12 VMAX=1.7140E+05 ETA=6.4550E-02 +KAPPA=5.6190E-02
CGDO=4.4318E-10 CGSO=4.4318E-10 +CGBO=3.2044E-10 CJ=3.1786E-04
MJ=1.0148 CJSW=1.3284E-10 +MJSW=0.119521 PB=0.800000

    PMOS 
    .MODEL CMOSP PMOS LEVEL=3 PHI=0.600000
TOX=2.0500E-08 XJ=0.200000U +TPG=-1 VTO=-0.9189 DELTA=2.3190E+00
LD=1.0440E-08 KP=3.3521E-05 + UO=199.0 THETA=1.7940E-01 RSH=25.0000
GAMMA=0.4124 +NSUB=1.4540E+16 NFS=5.0000E+12 VMAX=5.4640E+05
ETA=2.1090E-01 + KAPPA=9.3670E+00 CGDO=2.6379E-11 CGSO=2.6379E-11 +
CGBO=2.8996E-10 CJ=4.6135E-04 MJ=0.4831 CJSW=1.8681E-10 +
MJSW=0.315030 PB=0.850000
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