Filtering Techniques: Isolating Analog/Digital Power Supplies in PLL-Based CDC

Texas Instruments

Published Date: 10/25/2001

Description

This application note recommends power supply and ground noise-reduction techniques through the use of bypass capacitors and ferrite beads in TI's PLL-based clock distribution circuits (CDC) devices. This application note also includes a numeric example calculating the value of bypass and filter capacitors for a particular frequency of interest.