30 lines
520 B
Plaintext
30 lines
520 B
Plaintext
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simple differential pair - CM and DM dc sensitivity
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* Models:
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.model qnl npn(bf=80 rb=100 ccs=2pf tf=0.3ns tr=6ns cje=3pf cjc=2pf va=50)
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.model qnr npn(bf=80 rb=100 ccs=2pf tf=0.3ns tr=6ns cje=3pf cjc=2pf va=50)
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* Circuit description:
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q1 4 2 6 qnr
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q2 5 3 6 qnl
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rs1 11 2 1k
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rs2 3 1 1k
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rc1 4 8 10k
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rc2 5 8 10k
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q3 7 7 9 qnl
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q4 6 7 9 qnr
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rbias 7 8 20k
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* Inputs/Supplies:
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vcm 1 0 dc 0 sin(0 0.1 5meg) ac 1
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vdm 1 11 dc 0 sin(0 0.1 5meg) ac 1
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vcc 8 0 12
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vee 9 0 -12
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* Analysys:
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.tf v(5) vcm
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.tf v(5) vdm
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.sens v(5,4)
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.end
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