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-Inverter example circuit
-* This netlist demonstrates the following:
-* global nodes (vdd, gnd)
-* autostop (.tran defines simulation end as 4ns but simulation stops at
-* 142.5ps when .measure statements are evaluated)
-* scale (all device units are in microns)
-* model binning (look in device.values file for which bin chosen)
-*
-* m.x1.mn:
-* model = nch.2
-*
-* m.x1.mp:
-* model = pch.2
-*
-* parameters
-* parameterized subckt
-* vsrc with repeat
-* .measure statements for delay and an example ternary operator
-* device listing and parameter listing
-* You can run the example circuit with this command:
-*
-* ngspice inverter3.sp
-
-
-* global nodes
-.global vdd gnd
-
-* autostop -- stop simulation early if .measure statements done
-* scale -- define scale factor for mosfet device parameters (l,w,area,perimeter)
-*.option autostop
-.option scale = 1e-6
-
-* model binning
-.model nch.1 nmos ( version=4.7 level=54 lmin=0.1u lmax=20u wmin=0.1u wmax=10u )
-.model nch.2 nmos ( version=4.7 level=54 lmin=0.1u lmax=20u wmin=10u wmax=100u )
-.model pch.1 pmos ( version=4.7 level=54 lmin=0.1u lmax=20u wmin=0.1u wmax=10u )
-.model pch.2 pmos ( version=4.7 level=54 lmin=0.1u lmax=20u wmin=10u wmax=100u )
-
-* parameters
-.param vp = 1.0v
-.param lmin = 0.10
-.param wmin = 0.12
-.param plmin = 'lmin'
-.param nlmin = 'lmin'
-.param wpmin = 'wmin'
-.param wnmin = 'wmin'
-.param drise = 400ps
-.param dfall = 100ps
-.param trise = 100ps
-.param tfall = 100ps
-.param period = 1ns
-.param skew_meas = 'vp/2'
-
-* parameterized subckt
-.subckt inv in out pw='wpmin' pl='plmin' nw='wnmin' nl='nlmin'
-mp out in vdd vdd pch w='pw' l='pl'
-mn out in gnd gnd nch w='nw' l='nl'
-.ends
-
-v0 vdd gnd 'vp'
-
-* vsrc with repeat
-v1 in gnd pwl
-+ 0ns 'vp'
-+ 'dfall-0.8*tfall' 'vp'
-+ 'dfall-0.4*tfall' '0.9*vp'
-+ 'dfall+0.4*tfall' '0.1*vp'
-+ 'dfall+0.8*tfall' 0v
-+ 'drise-0.8*trise' 0v
-+ 'drise-0.4*trise' '0.1*vp'
-+ 'drise+0.4*trise' '0.9*vp'
-+ 'drise+0.8*trise' 'vp'
-+ 'period+dfall-0.8*tfall' 'vp'
-+ r='dfall-0.8*tfall'
-
-x1 in out inv pw=60 nw=20
-c1 out gnd 220fF
-
-.control
-tran 1ps 4ns
-meas tran inv_delay trig v(in) val=0.5 fall=1 targ v(out) val=0.5 rise=1
-meas tran inv_delay2 trig v(in) val=0.5 td=1n fall=1 targ v(out) val=0.5 rise=1
-meas tran test_data1 trig AT = 1n targ v(out) val=0.5 rise=3
-meas tran out_slew trig v(out) val=0.2 rise=2 targ v(out) val=0.8 rise=2
-
-*.meas tran delay_chk param='(inv_delay < 100ps) ? 1 : 0'
-if ( inv_delay < 100ps )
- let delay_chk = 1
-else
- let delay_chk = 0
-end
-echo delay_chk = "$&delay_chk"
-
-meas tran skew when v(out)=0.6
-let skew_meas = 0.5
-meas tran skew2 when v(out)=skew_meas
-meas tran skew3 when v(out)=skew_meas fall=2
-meas tran skew4 when v(out)=skew_meas fall=LAST
-meas tran skew5 FIND v(out) AT=2n
-let dfall = 100p
-let period = 1n
-let delta = dfall+period
-meas tran v0_min min i(v0) from=dfall to=delta
-meas tran i_v0_min min_at i(v0) from=dfall to=delta
-meas tran v0_avg avg i(v0) from = dfall to = delta
-meas tran v0_integ integ i(v0) from=dfall to=delta
-meas tran v0_rms rms i(v0) from=dfall to=delta
-rusage all
-plot v(in) v(out)
-.endc
-
-.end
-