4 Stage RTL Inverter Chain vin 1 0 dc 0v pwl 0ns 0v 1ns 5v vcc 12 0 dc 5.0v rc1 12 3 2.5k rb1 1 2 8k q1 3 2 0 qmod area = 100p rb2 3 4 8k rc2 12 5 2.5k q2 5 4 0 qmod area = 100p rb3 5 6 8k rc3 12 7 2.5k q3 7 6 0 qmod area = 100p rb4 7 8 8k rc4 12 9 2.5k q4 9 8 0 qmod area = 100p .print tran v(3) v(5) v(9) .tran 1e-9 10e-9 .model qmod nbjt level=1 + x.mesh node=1 loc=0.0 + x.mesh node=61 loc=3.0 + region num=1 material=1 + material num=1 silicon nbgnn=1e17 nbgnp=1e17 + mobility material=1 concmod=sg fieldmod=sg + mobility material=1 elec major + mobility material=1 elec minor + mobility material=1 hole major + mobility material=1 hole minor + doping unif n.type conc=1e17 x.l=0.0 x.h=1.0 + doping unif p.type conc=1e16 x.l=0.0 x.h=1.5 + doping unif n.type conc=1e15 x.l=0.0 x.h=3.0 + models bgnw srh conctau auger concmob fieldmob + options base.length=1.0 base.depth=1.25 .option acct bypass=1 .end
