AD9547BCPZ-REEL7

Overview

The AD9547BCPZ-REEL7 is a dual/quad input network clock generator and synchronizer manufactured by Analog Devices Inc. It supports Stratum 2 stability in holdover mode and features automatic or manual reference switchover with phase build-out capabilities. The device accepts input reference frequencies from 1 kHz to 750 MHz and generates output clocks up to 725 MHz. It includes a digital PLL with programmable loop bandwidths ranging from 0.001 Hz to 100 kHz, an optional low-noise LC-VCO system clock multiplier, and on-chip EEPROM for storing multiple power-up profiles. The component operates within a supply voltage range of 1.71 V to 3.465 V and functions across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Supports Stratum 2 stability in holdover mode with reference switchover options including hitless switching.
• Features a digital PLL with programmable loop bandwidths from 0.001 Hz to 100 kHz and optional low noise LC-VCO.
• Generates output frequencies up to 725 MHz with configurable LVPECL, LVDS, or CMOS outputs.
• Includes on-chip EEPROM to store multiple power-up profiles and software-controlled power-down.

Applications

• Network synchronization
• Cleanup of reference clock jitter
• SONET/SDH clocks up to OC-192, including FEC
• Stratum 2 holdover, jitter cleanup, and phase transient control
• Wireless base stations and controllers

Procurement Notes

Verify the REEL7 suffix indicates reel packaging rather than tray packaging when sourcing components. Confirm that the ordering suffix does not alter the electrical function or pinout of the AD9547BCPZ. Ensure compatibility with standard surface mount assembly processes for the 64-LFCSP package.

Selection Notes

Select this component for applications requiring high-stability network synchronization and jitter cleanup. Consider the 64-lead LFCSP package size and the specific supply voltage requirements (1.8 V and 3.3 V domains) during PCB layout. Evaluate the need for external crystal resonators if utilizing the SYSCLK path without an external clock source.

Part Context

The AD9547BCPZ-REEL7 belongs to the AD9547 series of network clock generators. It is designed to provide synchronization for synchronous optical networks (SONET/SDH) and other data communication systems. The device integrates a digital phase-locked loop to reduce input time jitter or phase noise associated with external references.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.