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Diffstat (limited to 'Windows/spice/examples/transient-noise/noi-ring51-demo.cir')
| -rw-r--r-- | Windows/spice/examples/transient-noise/noi-ring51-demo.cir | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/Windows/spice/examples/transient-noise/noi-ring51-demo.cir b/Windows/spice/examples/transient-noise/noi-ring51-demo.cir new file mode 100644 index 00000000..8bc6f6ed --- /dev/null +++ b/Windows/spice/examples/transient-noise/noi-ring51-demo.cir @@ -0,0 +1,59 @@ +* 51 stage Ring-Osc. BSIM3, transient noise +* will need 45 min on a i7 860 with 4 threads + +* closes the loop between inverters xinv1 and xinv5 +vin in out dc 0.5 pulse 0.5 0 0.1n 5n 1 1 1 + +vdd dd 0 dc 0 pulse 0 2.2 0 1n 1 1 1 + +vss ss 0 dc 0 +ve sub 0 dc 0 + +vpe well 0 2.2 + +* noisy inverters +xiinv2 dd ss sub well out25 out50 inv253 +xiinv1 dd ss sub well in out25 inv253 + +*very noisy inverter +xiinv5 dd ss sub well out50 out inv1_2 +*output amplifier +xiinv11 dd ss sub well out25 bufout inv1 +cout bufout ss 0.2pF + +.option itl1=500 gmin=1e-15 itl4=10 noacct + +* .dc vdd 0 2 0.01 +.tran 0.01n 500n + +.save in bufout v(t1) + +.include modelcard.nmos +.include modelcard.pmos + +.include noilib-demo.h + +.control +unset ngdebug +* first run +save bufout $ needed for restricting memory usage +rusage +tran 8p 10000n +rusage +plot bufout xlimit 90n 95n +linearize +fft bufout +* next run +reset +save bufout +alter @v.xiinv5.vn1[trnoise] = [ 0 0 0 0 ] $ no noise +tran 8p 10000n +rusage +plot bufout xlimit 90n 95n +linearize +fft bufout +plot mag(bufout) mag(sp2.bufout) xlimit 0 2G ylimit 1e-11 0.1 ylog +.endc + + +.end |