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Oct 17th, 2019, 3:30pm
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adaptive initial transient across corners (Read 71 times)
Horror Vacui
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adaptive initial transient across corners
Sep 28th, 2019, 12:00pm
 
Hi Everyone,

What ways are there to control the initial transient in spectre based on some conditions? I very often face the problem, that the startup or initial transient of a circuit is long and is a strong function of PVT corners or testbench variables, making a sweep across corners and variables extremely time consuming if I have to adjust for the worst case corner. I've used a veriloga block recently, which among other functions also had a similar role and I am wondering whether there are any other ways to address this issue.
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Ken Kundert
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Re: adaptive initial transient across corners
Reply #1 - Sep 29th, 2019, 10:58pm
 
Why is there an initial transient? Did you turn off the DC analysis that starts the transient analysis.

-Ken
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Horror Vacui
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Re: adaptive initial transient across corners
Reply #2 - Oct 8th, 2019, 6:49am
 
In the presence of a large input signal, the DC and the average steady state voltage will differ due to the non-linear device characteristics.
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