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Do VDD and VDD15 separate from AVDD33 and AVDD15 using UPD720150?

Latest Updated:02/01/2009

Question:

For the UPD720150 USB host/peripheral controller, do the digital power supplies (VDD and VDD15) have to be separated from the analog power supplies (AVDD33 and AVDD15)?

Answer:

AVDD33 and AVDD15 are the power supplies for the internal analog circuits. The analog power supplies must be separated from the digital power supplies in order to minimize analog power supply noise.
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