I have a few questions about the WM8978 audio amplifier board.

Minxinn

I have a few questions about the WM8978 audio amplifier board. [Copy link]

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This is the PCB and schematic diagram of the power amplifier board. I directly connected the digital ground part through copper cladding. The digital part and the analog part are covered with copper separately, and the digital ground and analog ground are connected through a 0 ohm resistor.

What I want to ask is:

1. Is there any problem with this PCB layout? Will the direct copper connection of my digital ground part affect the transmission of audio signals?

2. When routing audio signals on a PCB, is it better to use winding wires or jumper wires for signal transmission?

I hope someone can give me some guidance~ Thank you~

Minxinn

Ding Ding! Is there anyone?

qwqwqw2088

Whether to choose winding or jumper on the PCB board has little impact

The audio signal and power lines should follow the general routing rules.

The wm8978 module hardware manual has an introduction

Minxinn

qwqwqw2088 posted on 2022-3-26 17:30 Whether to choose winding or jumper on the PCB board has little effect. Pay attention to the general routing rules for audio signals and power lines. The wm8978 module hardware manual has them all...

Great! Thanks for your guidance