ngspice/Benchmark_test/ringosc_17.sp

53 lines
1.2 KiB
SourcePawn

*Sample netlist for BSIM6.0
*17-stage ring oscillator
.options abstol=1e-6 reltol=1e-6 post ingold dcon=1
.hdl "bsim6.va"
.include "modelcard.nmos"
.include "modelcard.pmos"
* --- Voltage Sources ---
vdd supply 0 dc=1.0
* --- Inverter Subcircuit ---
.subckt inverter vin vout vdd gnd
Xp1 vout vin vdd gnd pmos W=10e-6 L=10e-6
Xn1 vout vin gnd gnd nmos W=10e-6 L=10e-6
.ends
* --- 17 Stage Ring oscillator ---
Xinv1 1 2 supply 0 inverter
Xinv2 2 3 supply 0 inverter
Xinv3 3 4 supply 0 inverter
Xinv4 4 5 supply 0 inverter
Xinv5 5 6 supply 0 inverter
Xinv6 6 7 supply 0 inverter
Xinv7 7 8 supply 0 inverter
Xinv8 8 9 supply 0 inverter
Xinv9 9 10 supply 0 inverter
Xinv10 10 11 supply 0 inverter
Xinv11 11 12 supply 0 inverter
Xinv12 12 13 supply 0 inverter
Xinv13 13 14 supply 0 inverter
Xinv14 14 15 supply 0 inverter
Xinv15 15 16 supply 0 inverter
Xinv16 16 17 supply 0 inverter
Xinv17 17 1 supply 0 inverter
* --- Initial Condition ---
.ic 1=1
.tran 1n 10u
.print tran v(1)
.measure tran t1 when v(1)=0.5 cross=1
.measure tran t2 when v(1)=0.5 cross=7
.measure tran period param'(t2-t1)/3'
.measure tran delay_per_stage param'period/34'
.end