A question on Schematic Parts Placement
Question for the day: Where do the bypass capacitors go?
We all know that, on the finished PC board, bypass capacitors need to be strategically located close to chips and noise sources, but what about on the schematic? In this schematic clip, I've located them all in the same place to allow for a clean and well organized sheet. Sometimes, though, I'll place them in the schematic right up next to the chip, as they would be on the physical PC board layout. Electrically, both practices are equal, so it comes down to a matter of style.
I kind of go back and forth on it. Sometimes I'll let the schematic symbol take the lead. Here, the IC symbol has pins grouped by functionality rather than in numerical order. If the pins on the symbol were in numerical order, to me, it makes more sense to plop the bypass cap next to the power/ground pins on the IC symbol as it will be on the PCB. However, with this style of symbol, that doesn't seem to be as important.
On the other hand, I'm probably more likely to forget a capacitor or put it in the wrong place on in the PCB layout if I follow this practice. What about you? How do you place your bypass capacitors? Is it a matter of style, or is one way or the other best practice?
Six of one and 0b00000110 of another
Once you've figured out where to put those capacitors and finished up the layout, visit www.screamingcircuits.com and get a quote on putting them (and your other parts) on your PC board.