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stb simulated results different in ADE-L and ADE-XL

xianweng

hi,everyone,

I am simulate a crystal osc ,which main circuit is just a simple nmos with it's drain connected to gate through a resistor.And I put a zero vdc at the drain to do stb analysis.It's oscillate frequency is  25M ,so i choose frequency from 24M to 26M ,linear step ,every step is 100.

But i found the result is different in ADE-L and ADE-XL.Accroding to the waveform,the results in ADE-XL in right

i don't know which one i should trust.My cadence version is IC 6.15 and each case i use spectre to simulate.spectre version is 7.2

thanks any help in advance

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