AD9559BCPZ

Overview

The AD9559BCPZ is a dual PLL, quad input multiservice line card adaptive clock translator manufactured by Analog Devices Inc. It operates with supply voltages of VDD3 (3.135 V to 3.465 V) and VDD (1.71 V to 1.89 V). The device supports input reference frequencies from 2 kHz to 1250 MHz and generates output frequencies ranging from 262 kHz to 1250 MHz. It features a 72-lead LFCSP-VQ package (10 mm × 10 mm) and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Dual digital PLL architecture with four reference inputs and a 4x2 crosspoint allowing any reference to drive either PLL.
• Supports GR-1244 Stratum 3 stability in holdover mode and Telcordia GR-253 jitter specifications for SONET/SDH up to OC-192.
• Four pairs of configurable clock outputs supporting LVDS, HSTL, or single-ended CMOS modes.
• On-chip EEPROM stores multiple power-up profiles, and the device includes programmable digital loop filters covering bandwidths from 0.1 Hz to 2 kHz.

Applications

• Network synchronization including synchronous Ethernet and SDH to OTN mapping/demapping
• Cleanup of reference clock jitter
• SONET/SDH clocks up to OC-192, including FEC
• Stratum 3 holdover, jitter cleanup, and phase transient control

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature grade. Confirm that the required serial interface configuration (SPI or I2C) aligns with the system design constraints. Ensure proper handling procedures are followed due to moisture sensitivity classification.

Selection Notes

Select this component when a dual PLL solution with four independent reference inputs is required for multiservice line cards. Consider the AD9557 if only a single DPLL version is needed. Verify that the output voltage swing requirements match the available LVDS, HSTL, or CMOS driver configurations provided by the device.

Part Context

The AD9559 belongs to the AD9559 series of clock translators designed for high-performance network synchronization. It serves as a low loop bandwidth clock multiplier capable of generating low-jitter output clocks synchronized to external references. The device integrates both digital and analog PLL cores to manage frequency synthesis and jitter attenuation effectively.

Replacement Considerations

The AD9557 is identified as the single DPLL version of this part family. No other direct substitute part numbers are confirmed in the provided documentation.