I am using a solderless bread to prototype an analog sense -> 8 bit digital circuit.
- It's messy
- Has Hi gain sensing opamps
- sensitive POTS
I have 20mV of noise everywhere, even when I am connecting GND to GND at a different locations... All of my ICs have decoupling caps. Putting more caps on the rails has no noticeable effect.
I assumed this is just from breadboards being terrible.
My question is could the DC-DC converter be the source of this noise? If so I need to have a linear regulator power the analog electronics.