12.1 Layout Guidelines
Figure 46 illustrates an example of a PCB layout with the MUX36S08IPW, and Figure 47 illustrates an example of a PCB layout with MUX36D04IPW.
Some key considerations are:
- 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. In case of the differential signal, make sure the A inputs and B inputs are as symmetric 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.