1. Younes Thabet

    Is ground plane splitting still a thing in multilayer mixed-signal PCB?

    Hello all, I am designing a 6-layer mixed-signal board, where I have two 8-CH ADC, MCU, and punch of other digital circuitry. In the ADC reference design, they used split ground planes and I have been reading that this technique is outdated and actually creates more SI problems not to mention...
  2. dr3iz

    Connecting grounds

    Hi, I'm designing an ECU for our prototype. This will manage the power supplies to 2 different devices and also some data processing through a microcontroller. The image below is a basic block diagram of the system (sorry it does not look very nice). I am using a 48V power supply, which is...
  3. Younes Thabet

    How to use ground stitching and shielding?

    Hello guys, I was wondering when ground stitching 2 ground layers, what kinda pattern and spacing I should follow to place vias? and should I use more vias near components/pads that dissipate more heat? As for shielding, Is it only used in RF boards or it doesn't matter!! And if someone can...
  4. I

    Pcb Design: ±Vcc, ±5v & ground planes.

    Hello, I'm currently designing my first Pcb and I don't know how to stack-up the layers. I The following list shows the components i'm using in my design: Arduino : +5v Ad9833 module: +5V Amplifier : ±Vcc or ±5V Multiplier (Ad633) : ±Vcc (Vcc > 8V) Switched Capacitor Filter (Max293) : ±5V...
  5. Luiz Fernando Vieira

    why does 1/4 wavelength have a ground plane and 1/2 wavelength needs no?

    why does 1/4 wavelength have to have a ground plane and 1/2 doesn't? I know that an antenna that has half a wavelength does not need the ground plane (example a dipole antenna) and when using a wavelength of 1/4 it is usually necessary to have the ground plane (planar antennas [PCB]). My...