AD9548BCPZ

Overview

The AD9548BCPZ is a quad/octal input network clock generator and synchronizer by Analog Devices Inc. It supports Stratum 2 stability in holdover mode and reference switchover with phase build-out. The device features four pairs of reference input pins, configurable as differential or single-ended inputs, supporting frequencies from 1 Hz to 750 MHz. It provides four pairs of clock output pins, configurable as LVDS/LVPECL or CMOS outputs, with maximum output frequencies up to 450 MHz. The IC operates on supply voltages ranging from 1.71 V to 3.465 V and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Supports Stratum 2 stability in holdover mode and hitless reference switchover
• Four pairs of reference inputs (differential or eight single-ended) with programmable priority
• Four pairs of clock outputs (LVDS, LVPECL, or CMOS) with frequencies up to 450 MHz
• On-chip EEPROM for storing multiple power-up profiles

Applications

• Network synchronization
• Cleanup of reference clock jitter
• GPS 1 pulse per second synchronization
• SONET/SDH clocks up to OC-192, including FEC
• Wireless base station controllers

Procurement Notes

Verify the package type is 88-LFCSP (12x12) and confirm supply voltage requirements match the application design. Ensure compatibility with SPI/I²C control interfaces. Check for moisture sensitivity handling during storage and assembly.

Selection Notes

Select this component for applications requiring high-stability clock synchronization with Stratum 2 holdover capabilities. Consider the input/output configuration flexibility and the need for low jitter performance in SONET/SDH or wireless infrastructure environments.

Part Context

The AD9548BCPZ belongs to the AD9548 series of clock generators and synchronizers. It is designed for network synchronization and jitter cleanup applications, offering robust performance in demanding telecommunications environments.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices for potential alternatives based on specific application requirements.

FAQ

What is the maximum output frequency of the AD9548BCPZ?

The maximum output frequency is up to 450 MHz.

Can the reference inputs be configured as single-ended?

Yes, each of the four pairs of reference input pins can be configured as a single differential input or as two independent single-ended inputs.

Does the AD9548BCPZ support hitless reference switchover?

Yes, it supports hitless reference switchover with programmable time/time slope limits.