diff options
Diffstat (limited to 'Windows/spice/examples/measure/inv-meas-tran-control.sp')
-rw-r--r-- | Windows/spice/examples/measure/inv-meas-tran-control.sp | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/Windows/spice/examples/measure/inv-meas-tran-control.sp b/Windows/spice/examples/measure/inv-meas-tran-control.sp new file mode 100644 index 00000000..48f7d09a --- /dev/null +++ b/Windows/spice/examples/measure/inv-meas-tran-control.sp @@ -0,0 +1,113 @@ +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=4.4 level=54 lmin=0.1u lmax=20u wmin=0.1u wmax=10u ) +.model nch.2 nmos ( version=4.4 level=54 lmin=0.1u lmax=20u wmin=10u wmax=100u ) +.model pch.1 pmos ( version=4.4 level=54 lmin=0.1u lmax=20u wmin=0.1u wmax=10u ) +.model pch.2 pmos ( version=4.4 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 + |