Analog Devices AD9549 Manuals

This document describes the features and characteristics of the Dual Input Network Clock Generator/Synchronizer AD9549 Rev. D. It features flexible reference inputs, input frequencies ranging from 8 kHz to 750 MHz, two reference inputs, loss of reference indicators, auto and manual holdover modes, auto and manual switchover modes, smooth A-to-B phase transition, excellent stability in holdover mode, programmable 16 + 1-bit input divider and feedback divider, multiple output frequencies, programmable digital loop filter, high speed digitally controlled oscillator (DCO) core, direct digital synthesizer (DDS) with integrated 14-bit DAC, excellent dynamic performance, and software controlled power-down.

AD9549 Rev. 0 is a dual input network clock generator/synchronizer with flexible reference inputs, auto/manual holdover modes, and switchover modes. It also features excellent stability in holdover mode and a high-speed digitally controlled oscillator (DCO) core DDS.