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Thread: PEX for taps

10 Discord messages from ℹ️ - Information/general/threads/pex-for-taps.md.

Category: ℹ️ - Information Parent channel: #general Thread ID: 1527573213671067708

Messages: 10

message-1527574969532551258

2026-07-17T07:17:33.707+00:00 — tnt (@246tnt)

Reply/reference

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Content

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message-1527574972481142824

2026-07-17T07:17:34.41+00:00 — tnt (@246tnt)

Content

I'm not sure it will change anything at all.
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message-1527575724612124754

2026-07-17T07:20:33.732+00:00 — Olle (@osvel)

Content

Yeah right, I think namibj told me earlier that the substrate is not really simulated properly.
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message-1527576089231364116

2026-07-17T07:22:00.664+00:00 — Olle (@osvel)

Content

I've drawn my tap cells like those generated in klayout (on one side, made of psd/psc) but I feel like I don't really know what I am doing and hoping that simulations can later spot my issues.
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message-1527576494124171295

2026-07-17T07:23:37.198+00:00 — tnt (@246tnt)

Content

I wouldn't count on it.
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message-1527576554006122496

2026-07-17T07:23:51.475+00:00 — tnt (@246tnt)

Content

But wether that matters or not depends a lot of what you're doing.
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message-1527576870093062268

2026-07-17T07:25:06.836+00:00 — tnt (@246tnt)

Content

My understanding is it's mostly about tiny noise and cross talk between circuits, catching stray substrate currents. If you're circuit isn't super low noise or that sensitive, should be just fine
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message-1527576946119282770

2026-07-17T07:25:24.962+00:00 — tnt (@246tnt)

Content

Just my 2 ct.
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message-1527578744083054763

2026-07-17T07:32:33.63+00:00 — Olle (@osvel)

Content

Appreciate all cents i can get 🙂 I'm fine with a bit of noise. Its mostly latch-up I want to be sure I avoid, but maybe its not such a large problem. I have been browsing some designs and I think my method is fine.
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message-1527580613585014802

2026-07-17T07:39:59.354+00:00 — tnt (@246tnt)

Content

Latchup you should be fine. The DRC will check there are enough taps and if there are wired to the proper rail it's all good.
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