Timeline for PCB routing: isolate through-hole pins to force routing through decoupling capacitors?
Current License: CC BY-SA 4.0
9 events
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| Oct 24, 2022 at 16:53 | comment | added | Jonathan Hale | This answer suggests the difference is small: IC Power Pin Connection for Noise Immunity and Decoupling. I've been researching this topic for a while and there is quite a bit of conflicting information on Stack Exchange. | |
| Oct 20, 2021 at 22:09 | comment | added | Bruce Abbott | @mkeith citeseerx.ist.psu.edu/viewdoc/… "Decoupling capacitors (decap) are often used to filter out noise in the power distribution system (PDS)." | |
| Oct 16, 2021 at 11:25 | history | edited | DerStrom8 | CC BY-SA 4.0 |
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| Oct 15, 2021 at 17:14 | comment | added | user57037 | @DerStrom8 "decap" means remove the encapsulation or package of an IC to examine the die directly. I have never heard it used for decoupling capacitors. | |
| Oct 15, 2021 at 16:47 | comment | added | TypeIA | Thanks again. "Decap" is just slang as far as I know, but it pops up in many circles and even in academic papers. Übrigens, mir gefällt dein Name :) | |
| Oct 15, 2021 at 16:30 | comment | added | DerStrom8 | @TypeIA I agree, no need for discrete traces. On another note, I have never heard them referred to as "decaps". They are decoupling capacitors. Is "decaps" an actual term? More a question for the rest of the community, really. | |
| Oct 15, 2021 at 15:32 | vote | accept | TypeIA | ||
| Oct 15, 2021 at 14:39 | comment | added | TypeIA | That's a really insightful video, thanks. I've seen some of Dave Jones' other videos and love his channel. By this reasoning (and from the demonstration), I think I should just plant the decaps as close as possible to the relevant IC pins and allow both pins to thermal into the planes - the current will sort itself out. No explicit traces (since we have uninterrupted/solid power and ground planes - at least as uninterrupted as possible given a through-hole design! uninterrupted by signal traces at least!). Is that your take also? | |
| Oct 15, 2021 at 12:56 | history | answered | DerStrom8 | CC BY-SA 4.0 |