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AD9549 - Dual Input Network Clock Generator/Synchronizer

Description

The AD9549 provides synchronization for many systems, including synchronous optical networks (SONET/SDH).

The AD9549 generates an output clock, synchronized to one of two external input references.

The external references may contain significant time jitter, also specified as phase noise.

Features

  • Flexible reference inputs Input frequencies: 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 on outputs Excellent stability in holdover mode Programmable 16 + 1-bit input divider, R Differential HSTL clock output Output frequencies to 750 MHz Low jitter clock doubler for frequencies of >400 MHz Single-ended CMOS output for frequencies of.

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Datasheet Details

Part number AD9549
Manufacturer Analog Devices
File Size 1.08 MB
Description Dual Input Network Clock Generator/Synchronizer
Datasheet download datasheet AD9549 Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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FEATURES Flexible reference inputs Input frequencies: 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 on outputs Excellent stability in holdover mode Programmable 16 + 1-bit input divider, R Differential HSTL clock output Output frequencies to 750 MHz Low jitter clock doubler for frequencies of >400 MHz Single-ended CMOS output for frequencies of <150 MHz Programmable digital loop filter (<1 Hz to ~100 kHz) High speed digitally controlled oscillator (DCO) core Direct digital synthesizer (DDS) with integrated 14-bit DAC Excellent dynamic performance Programmable 16 + 1-bit feedback divider, S Software controlled power-down Available 64-lead LFCSP package Dual Input Network Cloc
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