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*.lstb .lstb mode=diff vsource=v0,v1 .print ac lstb + lstb(db) lstb(m) lstb(p) .meas ac gain_db find lstb(db) at=1 .meas ac pm find lstb(p) when lstb(db)=0 * 참고 1. .lstb 는 항상 .ac하고 같이 있어야 함. 2. ac voltage source 따로 필요 하지 않음. 3. stage 별 gain check 는 힘든 점이 있음.

.probe tran + dd09=par('v(d_9 )>=(vddtval/2)?1:0') + dd08=par('v(d_8 )>=(vddtval/2)?1:0') + dd07=par('v(d_7 )>=(vddtval/2)?1:0') + dd06=par('v(d_6 )>=(vddtval/2)?1:0') + dd05=par('v(d_5 )>=(vddtval/2)?1:0') + dd04=par('v(d_4 )>=(vddtval/2)?1:0') + dd03=par('v(d_3 )>=(vddtval/2)?1:0') + dd02=par('v(d_2 )>=(vddtval/2)?1:0') + dd01=par('v(d_1 )>=(vddtval/2)?1:0') + dd00=par('v(d_0 )>=(vddtval/2)?1:..

.measure tran vval find v(out,outb) at 1.997u .measure vmag param='v(out,outb)/1m' .measure vdb param='20*log10(vmag)'

** gain measure .measure ac 'gain(db)' max vdb(out0) .measure ac 'gain(mag)' max vm(out0) ** unity gain frequency .measure ac funit trig at=1 targ vdb(net_name) val=0 fall=1 ** phase margin .measure ac phase_0dB find vp(net_name) when vdb(net_name)=0 .measure ac PhaseMargin = param('180+phase_0dB')