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Decoupling capacitors and ground planes

SandeepDaftor

I'm making my first ever PCB, a very simple programming board for ATMEGA328p chips. I've got decoupling caps either side of the chip between +5V and GND. tutuapp

Question I have is that I'm using a copper pour on the top layer as a ground plane, and as well appvalley as the ground pin on the capacitors being connected to ground, the actual ground pin on the IC itself is also connected to ground.

Is that an issue? Should the only connection to ground come from the capacitor? tweakbox

  • CadAce2K
    SandeepDaftor said:
    Should the only connection to ground come from the capacitor?

    No. Not necessary. As long as the +5V cap is near the pin, the return gnd loop will be short. Typical.

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