AD9554BCPZ-REEL7

Overview

The AD9554BCPZ-REEL7 is a quad digital phase-locked loop (DPLL) clock translator in a 72-lead LFCSP package. It supports four differential or single-ended reference inputs and generates up to eight differential outputs configurable as HCSL, LVDS-compatible, or LVPECL-compatible. The device operates with VDD supply voltages of 1.5 V or 1.8 V, drawing typical currents of 520 mA at 1.8 V. Output frequencies range from 430 kHz to 941 MHz using unique VCOs, with programmable loop bandwidths from 0.1 Hz to 4 kHz. It provides jitter cleanup, Stratum 3 holdover stability, and adaptive clocking for OTN mapping applications.

Feature Summary

• Quad DPLL architecture with 4x4 crosspoint switch allowing any reference input to drive any PLL
• Adaptive clocking capability for dynamic feedback divider adjustment in OTN mapping/demapping
• Supports GR-1244 Stratum 3 stability in holdover mode with smooth reference switchover
• Eight differential outputs configurable as HCSL, LVDS-compatible, or LVPECL-compatible

Applications

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

Procurement Notes

Verify the REEL7 suffix indicates tape-and-reel packaging containing 400 units per reel. Confirm RoHS compliance status via official documentation. Ensure the ordering part number matches the specific voltage and package requirements for the target application design.

Selection Notes

Select this component when four independent DPLL channels are required for multiservice line cards. Compare against the AD9554-1BCPZ if only one output per PLL is needed, or the AD9559BCPZ for dual-channel applications. Verify that the 72-LFCSP package dimensions fit the PCB layout constraints.

Part Context

This part belongs to the Analog Devices AD9554 family of adaptive clock translators. It serves as a high-performance solution for network synchronization, offering flexibility through its quad DPLL structure and crosspoint switching capabilities compared to simpler synthesizers.

Replacement Considerations

The AD9554-1BCPZ offers a similar feature set but provides only one output per PLL in a smaller 56-lead package. For dual-channel requirements, the AD9559BCPZ is an alternative. Direct pin-to-pin replacement within the same package is not available for other channel counts.