Schematic Tips and Tricks

Reference video

1. Sectioning

  • seperate to several shematic pages
  • add schematic page number and title
  • show connection between pages
good sectioning example

2. Title Block

title block example

3. Text and Calculations

text and calculations example

4. Symbols

  • create symbols that group input on the left, and output on the right (not actual pinout)
  • always let ground pad or something connect to ground facing down

5. Crossings

  • use cross-overs at the junction of two wires that is not connected to each other
crossings example

6. Net Labels

  • Label all nets (useful in layout routing)
net labels example

7. Horizontal Text

8. Power and Ground Direction

  • power all pointing up
  • ground all pointing down

9. Junctions

  • don’t make 4-bar junction, since node will show up even if there is no connection
  • use 3-bar junction instead

10. Don’t overlap Text

11. Component Order and Placement

  • place components in order of layout adjacency
  • decoupling capacitors should be placed close to the relavent power pins
  • for example, high frequency, smaller capacitance capacitors should be placed close to the power pins
component order example

12. Colors

  • helpful in layout routing
colors example

13. Annotation

  • every component in a page start with page number * 100