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Meeting Pearls 4
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Meeting Pearls Vol. IV (1996)(GTI - Schatztruhe)[!].iso
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mixdisto.cir
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1991-04-13
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979b
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33 lines
Simple mixer circuit - diffpair fed by modulated Iee
*the output is v(6)
* harmonic analysis done with the following:
v1 1 0 0v ac 1.0 distof1 0.001
v2 7 0 0v ac 1.0 distof1 0.001
*disto dec 20 1.0e3 1.0e8
* intermodulation done with the following:
*v1 1 0 0v ac 1.0 distof1 0.001
*v2 7 0 0v ac 1.0 distof2 0.001
*disto dec 20 1.0e3 1.0e8 0.9
q1 3 1 4 2 mod1
q2 6 0 4 2 mod1
rc1 5 3 10k
rc2 5 6 10k
vcc 5 0 10v
qee 4 7 8 2 mod1
re 8 2 9K
vee 2 0 -10v
* note - spectre does not implement rb nonlinearities
*.model mod1 npn is=1.0e-16 bf=100 this model matches with spectre
.model mod1 npn is=1e-16 bf=100 cjs=2.0e-12 tf=0.3e-9 cje=3.0e-12 cjc=2.0e-12 vaf=50
*the above model matches with spectre
*.model mod1 npn is=1e-16 bf=100 cjs=2.0e-12 tr=6.0e-9 tf=0.3e-9 cje=3.0e-12 cjc=2.0e-12 vaf=50 this agrees with spectre
*.model mod1 npn is=1e-16 bf=100 rb=100 cjs=2.0e-12 tf=0.3e-9 tr=6e-9 cje=3.0e-12 cjc=2.0e-12 vaf=50 this model causes bad match with spectre
.end