Hi trond,

I guess the spectre.fc is the node voltages ( branch current of voltage source) at the last time point. It depends on your purpose to choose spectre.ic or spectre.fc. Use spectre.ic to save the time spending in solve the DC operation point. Use spectre.fc to avoid to run a transient simulation which costs too much CPU time to make the circuitry into normal operation mode. For eg., it is annoying to wait the reference voltage settling when I simulate ADC. However, I don't know the data accuracy in spectre.fc is enough to make the transient simulation resume. It is interesting, I will try.

BTW, I don't think the .fc is more correct because that depends on the tolerances for DC and tran analysis.


Yawei