4.2.1 Power Pins

It is recommended that a bulk and a decoupling capacitor be added at the input supply pin (VDD, AVDD and GND pins) of the WBZ35x Module.

  • The recommendation is to have a 4.7 μF on the AVDD pin, 4.7 μF and a 0.1 μF on the VDD pin.
  • The value of the capacitors are based on typical application requirements and are the minimum recommended values. Depending on the application requirement (in other words, a noisy power line or other known noise sources), the user can adjust the values of the capacitor to provide a clean supply to the module.
  • Place all the capacitors close to the module power supply pins.
Figure 4-5. Recommended Module Power Supply Connections
Note:
  1. The value of the C2 and C3 capacitors can vary based on the application requirement.
  2. Place the C2 and C3 capacitors close to the module pin.