I'm almost done with my first pcb design. The last thing I have to do is setting up a ground plane. Since I have no experience with ground planes at all, I wanted to ask for advice concerning the following situation:
My circuit consists of the following components: A USB-C connector, an IC (more specifically the BQ25890) and a few discrete components. At first I connected all the GNDs to one big plane on the top layer until I realized TI suggested connecting analog and power ground together. This topic seems to be quite controversial as I couldn't find a clear answer on the internet.
So my questions are:
My circuit consists of the following components: A USB-C connector, an IC (more specifically the BQ25890) and a few discrete components. At first I connected all the GNDs to one big plane on the top layer until I realized TI suggested connecting analog and power ground together. This topic seems to be quite controversial as I couldn't find a clear answer on the internet.
So my questions are:
- What is the preferred way to connect different GNDs?
- Should I put GND-planes everywhere on top and bottom layers?
- Let's say I add some more ICs. How do I know to which ground it needs to be connected to?
- Bonus question: How do I connect the USB-C shield?