AD9554BCPZ

Overview

The AD9554BCPZ is a quad digital phase-locked loop (DPLL) clock translator in a 72-lead LFCSP package. It accepts up to four reference inputs and generates eight differential outputs configurable as HCSL, LVDS-compatible, or LVPECL-compatible. The device supports input frequencies from 2 kHz to 1000 MHz and output frequencies from 430 kHz to 941 MHz. Operating voltages are 1.8 V (VDD: 1.71 V to 1.89 V; VDD_SP: 1.47 V to 2.625 V) or 1.5 V (VDD: 1.47 V to 1.53 V). Typical supply current is 520 mA at 1.8 V. It operates within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Quad DPLL architecture with 4x4 crosspoint allowing any reference input to drive any PLL
• Supports GR-1244 Stratum 3 stability in holdover mode and ITU-T G.8262 SyncE node clocks
• Adaptive clocking for dynamic adjustment of feedback dividers in OTN mapping/demapping applications
• Programmable loop bandwidths from 0.1 Hz to 4 kHz with smooth reference switchover

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and tape/reel configuration. Confirm that the component meets RoHS compliance requirements for the intended market. Check for any product change notifications regarding assembly relocation or material updates before finalizing procurement.

Selection Notes

Select this component when a multiservice line card requires adaptive clock translation with high integration. Ensure the design accommodates the 72-lead LFCSP-VQ (10 mm × 10 mm) footprint. Verify that the system power budget can support the typical 520 mA supply current at 1.8 V. Consider the AD9554-1 if fewer than eight outputs are required.

Part Context

The AD9554BCPZ belongs to the Analog Devices AD9554 family of clock translators. It serves as a high-performance solution for network synchronization, offering jitter cleanup and synchronization for systems such as SONET/SDH. The device integrates four independent DPLLs to provide flexible reference management and low-jitter output generation.

Replacement Considerations

The AD9554-1BCPZ is a variant with one output per PLL. For single or dual DPLL versions, refer to the AD9557 or AD9559 respectively.