AD9547

RECOMMENDED FOR NEW DESIGNS

Dual/Quad Input Network Clock Generator/Synchronizer

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Part Details

  • Supports Stratum 2 stability in holdover mode
  • Supports reference switchover with phase build-out
  • Supports hitless reference switchover
  • Automatic/manual holdover and reference switchover
  • 2 pairs of reference input pins, with each pair configurable as a single differential input or as 2 independent single-ended inputs
  • Input reference frequencies from 1 kHz to 750 MHz
  • Reference validation and frequency monitoring (1 ppm)
  • Programmable input reference switchover priority
  • 30-bit programmable input reference divider
  • 2 pairs of clock output pins, with each pair configurable as a single differential LVDS/LVPECL output or as 2 single-ended CMOS outputs
  • Output frequencies up to 450 MHz
  • 20-bit integer and 10-bit fractional programmable feedback divider
  • Programmable digital loop filter covering loop bandwidths from 0.001 Hz to 100 kHz
  • Optional low noise LC-VCO system clock multiplier
  • Optional crystal resonator for system clock input
  • On-chip EEPROM to store multiple power-up profiles
  • Software controlled power-down
  • 64-lead LFCSP package
AD9547
Dual/Quad Input Network Clock Generator/Synchronizer
AD9547 Functional Block Diagram AD9547 Pin Configuration
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Documentation

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Software Resources

Evaluation Software 2

AD9547/AD9548 Evaluation Board USB Flash Programmer Readme

readme-ad9547-ad9548-evaluation-board-usb-flash-programmer


Tools & Simulations


Evaluation Kits

EVAL-AD9547

AD9547 Evaluation Board

Features and Benefits

  • Simple power connection using 6 V wall adapter and onboard switching and LDO voltage regulators
  • Regulators easily bypassed for power measurements
  • 8 ac-coupled SMA connectors for output
  • SMA connectors for
    2 differential or 4 single-ended reference input
    System clock input
  • On-board provisions for OCXO, crystal oscillator, or crystal
  • USB connection to PC
  • 32-bit or 64-bit Windows-based evaluation software with simple graphical user interface
  • On-board PLL loop filter
  • Easy access to digital I/O and diagnostic signals via I/O header
  • Status LEDs for diagnostic sig

Product Details

The AD9547 is a very low noise DDS-based digital PLL clock synthesizer with up to four reference inputs and up to four outputs. The AD9547 features reference clock validation, automatic holdover, and hitless reference clock switching. The AD9547 is capable of accepting reference input clocks as low as 1 kHz. The AD9547 Revision A evaluation board is a compact, easy-to use platform for evaluating all features of the AD9547.

EVAL-AD9547
AD9547 Evaluation Board

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