AD9542BCPZ-REEL7

Overview

The AD9542BCPZ-REEL7 is a dual digital phase-locked loop (DPLL) synchronizer and adaptive clock translator manufactured by Analog Devices Inc. It features four input references and ten clock outputs, supporting frequencies from 2 kHz to 750 MHz for physical layer clocks. The device provides jitter cleaning and frequency translation compliant with ITU-T G.8262 and Telcordia GR-253 standards. It operates on a single 1.8 V supply within a temperature range of −40°C to +85°C. The component is housed in a 48-lead LFCSP package measuring 7 mm × 7 mm.

Feature Summary

• Dual DPLLs with 24-bit fractional dividers and programmable digital loop filter bandwidths ranging from 10⁻⁴ Hz to 1850 Hz.
• Five pairs of differential output pins configurable as LVDS, HCSL, or CML, or as ten single-ended outputs.
• Supports automatic and manual holdover with zero-delay, hitless, or phase buildout reference switchover.
• Integrated analog PLLs (APLL0/1) with VCO ranges of 2424–3232 MHz and 3232–4040 MHz respectively.

Applications

• SyncE jitter cleanup and synchronization
• Optical transport networks (OTN), SDH, and macro/small cell base stations
• JESD204B support for ADC and DAC clocking
• Stratum 2, Stratum 3e, and Stratum 3 holdover systems

Procurement Notes

Verify the REEL7 suffix indicates tape and reel packaging configuration. Confirm the specific lot date code and RoHS compliance status against the manufacturer's current documentation prior to ordering. Ensure the 48-lead LFCSP footprint matches the target PCB layout requirements.

Selection Notes

Select this component when dual independent DPLLs are required for complex clock distribution. Verify that the input reference frequencies fall within the 2 kHz to 750 MHz range. Check if the required output formats (LVDS/HCSL/CML) align with the five available differential pin pairs. Consider the 1.8 V supply voltage constraint for power budget calculations.

Part Context

This part belongs to the AD9542 family of clock synthesizers. The AD9542BCPZ-REEL7 designation specifies the industrial temperature grade (-40°C to +85°C) and the reel packaging format. It serves as a core timing solution for carrier Ethernet and optical networking infrastructure requiring high-jitter attenuation.

Replacement Considerations

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