AD9518-0ABCPZ

Overview

The AD9518-0ABCPZ is a six-output clock generator featuring an integrated voltage-controlled oscillator (VCO) with a tuning range of 2.55 GHz to 2.95 GHz. It supports external VCO or VCXO inputs up to 2.4 GHz and accepts LVPECL, LVDS, or CMOS reference signals up to 250 MHz. The device provides three pairs of LVPECL outputs operating at frequencies up to 1.6 GHz, each equipped with programmable dividers ranging from 1 to 32 and coarse phase delay capabilities. Key performance metrics include an additive output jitter of 225 fs rms and channel-to-channel skew of less than 10 ps for paired outputs. It operates on a single 3.3 V supply within the industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated VCO tunes from 2.55 GHz to 2.95 GHz; supports external VCO/VCXO up to 2.4 GHz
• Six LVPECL outputs in three pairs, supporting frequencies up to 1.6 GHz with 1-to-32 division ratios
• Additive output jitter of 225 fs rms and channel-to-channel skew under 10 ps
• Flexible reference input accepting differential or dual single-ended signals up to 250 MHz

Applications

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

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified suppliers. Confirm package integrity upon receipt, as the LFCSP-48 housing is sensitive to moisture and physical damage. Ensure all ordering suffixes match the required specifications, as variations may affect electrical parameters or packaging. Cross-reference the manufacturer part number against official documentation to prevent substitution errors.

Selection Notes

Select this component when subpicosecond jitter performance and low phase noise are critical for data converter applications. The internal VCO eliminates the need for external oscillators if the 2.55 GHz to 2.95 GHz range suffices. For designs requiring additional outputs, zero-delay modes, or EEPROM configuration, consider the AD9520 or AD9522 instead. Ensure the system power budget accommodates the typical 1.7 W dissipation during full operation.

Part Context

The AD9518-0ABCPZ belongs to the AD9518 family of clock generators, which also includes variants like the AD9518-1 and AD9518-4. These family members share similar core architectures but differ in specific output configurations, package sizes, or feature sets. The AD9518-0 specifically emphasizes ultra-low jitter performance optimized for high-speed data conversion applications.

Replacement Considerations

For direct pin-compatible replacements within the same family, consult the AD9518 series ordering guide. The AD9518-1 and AD9518-4 offer alternative configurations but may require verification of output counts and frequency ranges. For applications needing more outputs or different control features, the AD9520 and AD9522 are available alternatives.