AD9516-5BCPZ

Overview

The AD9516-5BCPZ is a 14-output clock generator from Analog Devices, packaged in a 64-lead LFCSP. It integrates a phase-locked loop (PLL) designed for use with an external voltage-controlled oscillator (VCO) or voltage-controlled crystal oscillator (VCXO) operating up to 2.4 GHz. The device provides six LVPECL outputs capable of frequencies up to 1.6 GHz, four LVDS outputs up to 800 MHz, and eight CMOS outputs up to 250 MHz. Key electrical parameters include a 3.3 V core supply, additive output jitter of 225 fs rms for LVPECL and 275 fs rms for LVDS, and channel-to-channel skew of less than 10 ps for paired outputs. It operates within an industrial temperature range of −40°C to +85°C.

Feature Summary

• Integrates a low-phase-noise PLL compatible with external VCO/VCXO inputs up to 2.4 GHz
• Provides 14 total outputs: six 1.6 GHz LVPECL, four 800 MHz LVDS, and eight 250 MHz CMOS
• Features programmable dividers (1–32 for LVPECL; up to 1024 for LVDS/CMOS) with coarse phase delay
• Includes automatic reference switchover, holdover modes, and digital/analog lock detect capabilities

Applications

• Low jitter, low phase noise clock distribution systems
• 10/40/100 Gb/sec networking line cards including SONET, Synchronous Ethernet, and OTU2/3/4
• Clocking high-speed ADCs, DACs, DDSs, DDCs, DUCs, and MxFEs
• High-performance wireless transceivers and ATE instrumentation

Procurement Notes

Verify the specific suffix BCPZ corresponds to the lead-free tray packaging variant when sourcing. Confirm that the design accommodates the requirement for an external VCO/VCXO, as this model lacks an integrated oscillator. Ensure the charge pump supply (VCP) can support the extended voltage range if utilizing the full 2.4 GHz input frequency capability.

Selection Notes

Select the AD9516-5BCPZ when an external VCO is preferred over an integrated one, offering flexibility for custom frequency planning. This model supports differential or single-ended reference inputs and provides fine delay adjustment on LVDS outputs. Consider the AD9520-5 or AD9522-5 if an onboard EEPROM or additional output channels are required for the application.

Part Context

The AD9516-5 is part of the AD9516 family of multi-output clock generators. Unlike variants with integrated VCXOs (such as the AD9516-0), the AD9516-5 relies on an external oscillator source up to 2.4 GHz. It shares the same 64-lead LFCSP package and output configuration as other family members but is distinct in its PLL feedback architecture requirements.

Replacement Considerations

The AD9516-0BCPZ serves as a direct functional alternative if an integrated 2.8 GHz VCO is acceptable instead of an external one. For applications requiring more outputs or embedded memory, the AD9520-5 and AD9522-5 are available replacements within the same product family.