My PCB is powered from USB port and includes Recom RKZ0505D for powering dual-supply OPAMPs. Recom gives +5V and -5V outputs. So I have:
- Top signal & components
- Bottom signal & components
What should be the stackup of layers in a 4-layer PCB? There are about 30 ICs on the PCB. Some of them powered from 3.3V and some of them +5/-5V. If the layers used are:
Then the power lines +5/-5V will be long. How can I optimize layers and right order?