PCB Layout Techniques for Audio Amplifiers

PCB Layout Techniques to Achieve RF Immunity for Audio Amplifiers - Application Note 3660 - Maxim:

Minimize Noise in Audio Channels with Smart PCB Layout - Application Note 4079 - Maxim

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Lumped / Distributed Line Length Calculator

Updated Feb 16, 2020

Digital     1/4  
RF Ckts  1/12
Analog    1/16
Stitching Vias 1/20

Inner layer example calculation where Risetime = 5nSec

click on image to view

Lumped / Distributed Line Length Boundary ~ 7.27 Inches

Outer layer example calculation where Risetime = 5nSec

Note Effective ER (2.55) is lower on outer layers

That's it !

ESD Protection Layout Guide

Texas Instruments Application Report 

SLVA680 - Feb 2015

http://www.ti.com/lit/an/slva680/slva680.pdf

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ESD - Simple Steps to Success

Source  MACHINE Design.com

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SPICE Simulation Fundamentals - National Instruments

SPICE Simulation Fundamentals - National Instruments:

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FreeCAD: An open-source parametric 3D CAD modeler

FreeCAD: An open-source parametric 3D CAD modeler:


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Electrolytic Caps - Polarity Markings

IPC-7351B Component Zero Orientation AppNote

Click images to view

Source: Mentor Graphics AppNote 10831

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