Figure 10-1 shows an example of a PCB layout with the TMUX6136.
Some key considerations are as follows:
- Decouple the VDD
and VSS pins with a 0.1-µF capacitor, placed as close to the pin
as possible. Make sure that the capacitor voltage rating is sufficient for
the VDD and VSS supplies.
- Keep the input lines as short
as possible.
- Use a solid ground plane to help distribute heat and reduce
electromagnetic interference (EMI) noise pickup.
- Do not run sensitive analog
traces in parallel with digital traces. Avoid crossing digital and analog
traces if possible, and only make perpendicular crossings when
necessary.