I’m trying to design a circuit using an LM324QT, a standard LM324 quad opamp in a QFN16 package.
I’m using the library LM324 and assigning the library QFN16 footprint but the pin assignments are wrong; The pin numbering on the LM324QT differs from the standard LM324 in SOIC or TSSOP and there are two NC pins and a central pad. The library LM324 symbol is in five parts and the pin numbers for the QFN are often on different parts from the standard LM324.
Is there a way to assign pins for the whole device rather than each opamp symbol individually? Am I going to have to edit and save a custom symbol just for the QFN variant?
Thanks in advance, I’ve tried to google and find the answer but I’ve not had any luck.
Pinout for the QFN is indeed quite different. to fix it, you first have to put a copy of the schematic symbol i a personal library, and then edit all pin numbers.
Some pros never use symbols they haven’t made because they can’t afford a mistake. Some will verify a design and then save it into a personal library of parts they know to be good.
If it is just a matter of pin numbers then it shouldn’t be a very hard fix. You’re pretty much going to have to learn to use the editors anyhow. Might was well be now?
I’m fully onboard with learning the use the editors, I use a lot of strange components and mechanical featuresso custom symbols and footprints were always in my future.
Really I just wanted to check that I wasnt needlessly complicating my libraries if there was a better way of doing it.
