AD9554BCPZ-REEL

Overview

The AD9554BCPZ-REEL is a quad digital phase-locked loop (DPLL) clock translator manufactured by Analog Devices Inc. It features four reference inputs and eight differential clock outputs, supporting frequencies from 430 kHz to 941 MHz. The device operates on a 1.8 V supply with a typical current of 520 mA. It supports HCSL, LVDS-compatible, and LVPECL-compatible output formats. Key specifications include programmable loop bandwidths from 0.1 Hz to 4 kHz and support for GR-1244 Stratum 3 stability in holdover mode.

Feature Summary

• Quad DPLL architecture with four reference inputs and an 8-output crosspoint matrix
• Supports adaptive clocking for OTN mapping/demapping applications
• Compliant with ITU-T G.8262, G.823, G.824, G.825, and G.8261 standards
• Smooth reference switchover with virtually no disturbance on output phase

Applications

• Network synchronization including synchronous Ethernet and SDH to OTN mapping
• SONET/SDH clocks up to OC-192, including FEC
• Stratum 3 holdover, jitter cleanup, and phase transient control
• Cable infrastructure and data communications systems

Procurement Notes

Verify the specific reel packaging configuration against the manufacturer's ordering guide. Confirm that the component meets RoHS compliance requirements for the target market. Ensure proper handling procedures are followed due to moisture sensitivity classification. Validate that the operating temperature range of -40°C to +85°C aligns with system environmental constraints.

Selection Notes

Select this component when a multiservice line card requires adaptive clock translation with low loop bandwidth capabilities. The AD9554 is suitable for applications needing Stratum 3 holdover performance and smooth reference switching. Consider the AD9554-1 if fewer outputs are required, or the AD9557/AD9559 for single or dual DPLL configurations respectively.

Part Context

The AD9554 belongs to Analog Devices' family of precision clock translators designed for network synchronization. It integrates four independent DPLLs into a single 72-lead LFCSP package. This integration reduces board space and simplifies design compared to discrete solutions. The device is optimized for high-performance telecommunications and data communication infrastructure.

Replacement Considerations

The AD9554-1 serves as a lower-pin-count alternative with one output per PLL. For reduced channel counts, the AD9557 (single DPLL) and AD9559 (dual DPLL) are direct functional substitutes within the same product family.