The following figure illustrates the schematic snippet, highlighting the filtering requirement for AVDD. It can be either connected to the main power supply rail VDD_M or to a separate analog power supply VDD_A. By default, the FB3 ferried bead is shown mounted on the reference design, assuming that a separate analog supply will be fed to the device. If a separate analog supply is not available on a specific custom design case, connect AVDD to a main power supply rail VDD_M through the FB2 ferrite bead. Figure 2-2. AVDD Input Filter
Note: Using a common power supply for both VDD_M and VDD_A is recommended. For more accurate analog measurements, it is suggested to separate the analog supply (VDD_A) from the common supply. Ensure both AVDD and VDD have the same voltage and timing characteristics.
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