Ken Kundert
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Yeah, I do. But you were getting better than 100dB of resolution even before you started making changes. At this level there are subtle low-level effects that make it hard to know what exactly is happening or how to get the best result.
In the future, you should really include your whole model. Leaving things out generally leads to uncertainty that make your question harder to answer and risk wasting peoples time. In this case, the `timescale is critical to the performance of the module, but you neglected to give it. Including the whole model would only have required a few more lines, but it would have removed considerable uncertainty. If you gave enough to duplicate your simulation (a short netlist), then you open up the possibility of getting really high quality feedback.
-Ken
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