Return currents on a 4 layer board
Kostas_P , 09-19-2021, 10:20 AM
Hi Everyone,
I have a four layer board with the following layer stack:
L1: Signals
L2: Solid GND
L3: Solid 3.3V
L4: Signals
The signals i am routing on L4 are UARTs, I2C and SPI.
Do you think i will need to be adding capacitors close to vias every time i change layer from 1 to 4 and vice versa?
Thank you.
Kostas.
robertferanec , 09-20-2021, 03:13 AM
Personally, I would not - especially if these are 3.3V signals.
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