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DC after Tran

Pirate King

I followed the instructions from the link 9 years ago but it does not work for me now;

How to simulate DC sweep after TRAN? - Custom IC Design - Cadence Technology Forums - Cadence Community

The tran is required for startup of the circuit.

I sequence the DC after tran and on DC options I set readns=spectre.fc and useprevic=ns or yes

I can see the DC log saying that the file is being read and if I open the file the values make sense but back annotation does not show correct startup voltage nodes

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  • Andrew Beckett

    Quite hard to answer without seeing it (customer support would be better), but this might be due to having sources in your circuit that have a DC value that are not consistent with the final value of that source in the transient).

    Andrew

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  • Andrew Beckett

    Quite hard to answer without seeing it (customer support would be better), but this might be due to having sources in your circuit that have a DC value that are not consistent with the final value of that source in the transient).

    Andrew

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