[sdiy] PCB op-amp layout - 2x2 or 1x4

[rsdio at audiobanshee.com]

On Oct 29, 2015, at 11:42 PM, mskala at ansuz.sooke.bc.ca wrote:
> On Fri, 30 Oct 2015, Mattias Rickardsson wrote:
>> For highest signal integrity, duals (or singles of course) could be
>> preferred in some cases. For example when dealing with tiny signal levels,
> 
>> I still haven't had such a problem with quads though.
> 
> I have oscillators that lock because they share units of a quad, despite
> my best efforts to keep them separate.  They don't lock *much*, but more
> than I would prefer, and I'm likely to redesign the board with single op
> amps instead.
> 
> -- 
> Matthew Skala

When you do redesign, please report back on whether it actually fixed the locking problem. This could be a supply issue, or trace coupling, or basically something that's not necessarily solved by going dual or single.

Brian