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PCB Design Tutorial.

Introduction

This tutorial is intended to cover PCB design and fabrication for new as well as advanced hobbyists and students. It will briefly cover everything you needed to know to get started with quality PCB design and fabrication at home.

 

Electrical design classification:

Depending on the electrical characteristics, we could identify 5 major types of designs listed bellow.

  1. General purpose analog designs. These designs usually involve discrete analog electronic devices as OP-AMPs, Transistors diodes and capacitors. For these types of circuits, small noise is not an issue; gain is low and has bandwidth usually in MHz limit.
  2. General purpose digital designs. Digital systems designed to operate up to about 20MHz frequency is considered in this category and usually involve small microcontrollers. Because of low speed timing is not critical.
  3. High performance analog designs. These are special designs deals with low noise applications, higher bandwidth applications, higher gain designs or high dynamic range designs.
  4. High speed digital designs. Digital systems runs above 20MHz are usually considered in this category. Usually these designs have critical timing requirements.
  5. Radio frequency designs. RF designs usually operate over 20MHz and have special requirements like low noise and high dynamic range. PCB is very critical in RF designs to achieve good performance.

Real world designs will usually involve more than one of above design requirements. Therefore it is important to optimize PCB design for good performance.

After the design of schematic, PCB design has two major tasks to complete before fabrication.

  1. Placement of components.
  2. Routing.

It is very important to place your parts around your PCB strategically so that your routing is made easy.

 

 

 

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