AD9544BCPZ-REEL7

Overview

The AD9544BCPZ-REEL7 is a clock synchronizer and jitter cleaner featuring dual digital phase-locked loops (DPLLs) and a 1 pps synchronizer. It supports up to four input references and provides ten synchronized clock outputs. The device operates on a single 1.8 V supply, with I/O supporting 1.8 V, 2.5 V, or 3.3 V levels. Key electrical parameters include a maximum output frequency of 500 MHz for single-ended and differential modes, and a maximum input frequency of 750 MHz. The package is a 48-lead LFCSP, and it functions within a temperature range of -40°C to +85°C.

Feature Summary

• Dual DPLL architecture synchronizes 1 Hz to 750 MHz physical layer clocks with jitter cleaning capabilities.
• Ten clock outputs configurable as five pairs of differential LVDS/HCSL/CML or ten single-ended outputs.
• Supports continuous frequency monitoring with deviation detection as low as 50 ppb.
• Features programmable digital loop filter bandwidth ranging from 10^-4 Hz to 1850 Hz.

Applications

• SyncE and GPS synchronization and jitter cleanup
• 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 applications

Procurement Notes

Verify the REEL7 suffix indicates tape-and-reel packaging when sourcing. Confirm the specific B-grade temperature and performance rating matches system requirements. Ensure the 48-lead LFCSP footprint aligns with PCB layout guidelines. Check for moisture sensitivity level compliance during storage and handling.

Selection Notes

Select this component for applications requiring dual independent DPLLs for reference redundancy. Ensure the required output frequencies fall within the 500 MHz limit for single-ended configurations. Verify that the system can accommodate the 1.8 V core voltage and appropriate I/O voltage levels. Consider the 48-lead LFCSP package size for space-constrained designs.

Part Context

The AD9544BCPZ-REEL7 belongs to the AD9544 family of clock synchronizers. It serves as a derivative designed for high-performance timing applications, offering enhanced jitter cleaning and synchronization features compared to standard clock generators. The part integrates both digital and analog PLL functionalities for robust clock distribution.

Replacement Considerations

The AD9544BCPZ is the tray-packaged equivalent of the AD9544BCPZ-REEL7. Both share identical electrical specifications and pinouts; the difference lies solely in the shipping packaging format. No functional substitution changes are indicated by the ordering suffix.