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- difpair ckt - simple differential pair
- *.width in=72
- .opt acct list node lvlcod=2
- *.tf v(5) vin
- *.dc vin -0.25 0.25 0.005
- *.ac dec 10 1 10ghz
- .tran 5ns 500ns
- vin 1 0 sin(0 0.1 5meg) ac 1
- vcc 8 0 12
- vee 9 0 -12
- q1 4 2 6 qnl
- q2 5 3 6 qnl
- rs1 1 2 1k
- rs2 3 0 1k
- rc1 4 8 10k
- rc2 5 8 10k
- q3 6 7 9 qnl
- q4 7 7 9 qnl
- rbias 7 8 20k
- .model qnl npn(bf=80 rb=100 ccs=2pf tf=0.3ns tr=6ns cje=3pf cjc=2pf
- + va=50)
- .print dc v(4) v(5)
- .plot dc v(5)
- .print ac vm(5) vp(5)
- .plot ac vm(5) vp(5)
- .print tran v(4) v(5)
- .plot tran v(5)
- .end
-