Method:PEX pole-shift triage
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PEX pole-shift triage
Procedure for diagnosing post-layout pole shifts after PEX netlist extraction.
- Diff pre-layout vs post-PEX AC response.
- Identify the shifted pole; correlate to added layout parasitics (routing, via resistance).
- Confirm with a reduced parasitic netlist.
TBD — flesh out from Calibre/PEX workflow.