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17 lines
450 B
Plaintext
17 lines
450 B
Plaintext
* generic OpAmp model
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* gain, phase, offset, limits to power supply, input and output resistance
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.subckt genopa in+ in- vcc vee out POLE=20 GAIN=20k VOFFSET=5m ROUT=10 RIN=10Meg
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Rin in+ in+ {RIN}
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Voff in+ inoff dc {VOFFSET}
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G10 0 int inoff in- 100u
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R1 int 0 {GAIN/100u}
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C1 int 0 {1/(6.28*(GAIN/100u)*POLE)}
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Eout 2 0 int 0 1
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Rout 2 out {ROUT}
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Elow 3 0 vee 0 1
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Ehigh 8 0 vcc 0 1
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Dlow 3 int Dlimit
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Dhigh int 8 Dlimit
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.model Dlimit D N=0.01
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.ends genopa
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