#### Cyrk

##### Newbie level 6

I'm having trouble simulating enclosed oscilator (3-stage crappy design) with PSpice 9.1 (it works just fine on WinSpice and HSpice). Any idea why? Thank you in advance

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VDD VDD 0 DC 1.22V

VGND GND 0 DC 0V

M1000 N1 OUT VDD Vdd pfet w=16.2u l=5.2u

+ ad=10.4328p pd=24.3u as=31.2984p ps=72.9u

M1003 N2 N1 VDD Vdd pfet w=16.2u l=5.2u

+ ad=10.4328p pd=24.3u as=0p ps=0u

M1006 OUT N2 VDD Vdd pfet w=16.2u l=5.2u

+ ad=10.4328p pd=24.3u as=0p ps=0u

M1009 N1 OUT GND Gnd nfet w=6.6u l=5.2u

+ ad=4.0986p pd=12.06u as=12.2958p ps=36.18u

M1012 N2 N1 GND Gnd nfet w=6.6u l=5.2u

+ ad=4.0986p pd=12.06u as=0p ps=0u

M1015 OUT N2 GND Gnd nfet w=6.6u l=5.2u

+ ad=4.0986p pd=12.06u as=0p ps=0u

C0 GND GND 2.8fF

C1 VDD GND 4.1fF

C2 N2 GND 4.8fF

C3 N1 GND 4.8fF

C4 OUT GND 5.1fF

.tran 50p 1000n

.option reltol=1e-5

.probe

.end