Education Library

Frequently Asked Question

Can I use the same power supply for AVDD and DVDD?

A single supply can definitely power both AVDD and DVDD. However it may not provide the best isolation between the analog and digital circuitry which may increase the noise coupling. We typically recommend going by our evaluation board layout as the test bed for the user. Best engineering practice dictates good AC bypassing at each individual device pin, and providing adequate trace size to reduce IR drops to minimal amounts (e.g. – use power planes).