1 difpair ckt - simple differential pair
2 * modified from Spice-3 examples
4 *>.opt rstray cstray outwidth=80
6 vin 1 0 sin(0 0.1 5meg) ac 1 dc 0
18 .model qnl npn(bf=80 rb=100 va=50 ccs=20pf)
20 *>.print tran v(4) v(5)
24 *>.plot tran v(4)(0,8) v(5)(0,8)