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Can we change the options for turning on/off the noise contributors in the simulation script?

greywanderer

I would like to turn on/off the noise contributors and then run the various noise analysis. Something as shown below. Is this supposed to work? The second options statement doesn't seem to take effect.

Thanks!

thermaloptions options psfversion="1.1.0" reltol=1e-3 vabstol=1e-6 \\
iabstol=1e-12 temp=25 tnom=27 noiseon_type=\[thermal\] scalem=1.0

noiThnhv ( vgsn_io 0 ) noise values = \[1k\]

//Flicker
flickeroptions options psfversion="1.1.0" reltol=1e-3 vabstol=1e-6 \\
iabstol=1e-12 temp=25 tnom=27 noiseon_type=\[flicker\] scalem=1.0

noiFlnhv ( vgsn_io 0 ) noise values=\[1k 10k\]

  • The issue here is that the options statement in spectre is not ordered, and so the last value specified will be used everywhere - you get warnings to this effect in the spectre log file.

    There is the set statement (see "spectre -h set") which is an ordered option statement that is queued along with the analyses, but unfortunately this doesn't support the noiseon_type option. I think you'll need to contact customer support to request this as an enhancement. I don't think you can fool it into working by using a parameter and an alter either (I tried quickly, although my test case may not have been a good way of testing this).

    Andrew

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