Hello All,
So I'm doing a personal project PCB and am considering placing a small Traco power supply (PN: TMR 3-2423WI) on the board. The max current draw I expect to see is around 50mA on either rail. But I also have sensitive millivolt level signals coming from a sensor and going into an instrumentation amplifier on the board. I'm not certain if this is a wise idea or not.
I was planning on having the board be about 2.25" (57.15cm) square, and have 4 layers with 2 power planes for positive and negative 15V, and the top and bottom would be signal layers with a ground pour stitched together with vias. But yea just not sure if placing a power supply about 3/4" (1.9 cm) away from sensitive millivolt level signals would be a dumb idea or not. Any advice would be much appreciated. Thanks.