AD9518-1ABCPZ

Overview

The AD9518-1ABCPZ is a 6-output clock generator from Analog Devices, housed in a 48-lead LFCSP package. It integrates a phase-locked loop and a voltage-controlled oscillator (VCO) tuning from 2.30 GHz to 2.65 GHz. The device provides three pairs of LVPECL outputs operating up to 1.6 GHz, with each pair sharing a programmable 1-to-32 divider and coarse phase delay. It accepts differential or single-ended reference inputs up to 250 MHz and supports external VCO/VCXO inputs up to 2.4 GHz. 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.

Feature Summary

• Integrated on-chip VCO tunes from 2.30 GHz to 2.65 GHz
• Six LVPECL outputs (three pairs) with 1-to-32 dividers and programmable delays
• Additive output jitter of 225 fs rms and channel-to-channel skew <10 ps
• Supports automatic revertive and manual reference switchover/holdover modes

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and tape/reel specifications. Confirm RoHS compliance status and humidity sensitivity handling requirements prior to procurement. Ensure the supply voltage range matches the application design constraints.

Selection Notes

Select this component when subpicosecond jitter performance and low phase noise are critical for data converter applications. Choose the internal VCO configuration for compact designs or utilize the external VCO input for frequencies up to 2.4 GHz. Ensure the system requires six LVPECL outputs with independent divide ratios and phase alignment capabilities.

Part Context

The AD9518-1 is part of the AD9518 family, which includes variants like the AD9517 and AD9516 that differ primarily in output count and package size. This specific model provides six LVPECL outputs, distinguishing it from higher-output counterparts while maintaining the same core PLL and VCO architecture within the 48-lead LFCSP form factor.

Replacement Considerations

The AD9518-0A is a similar member of the AD9518 family offering comparable functionality. Verify pin compatibility and electrical specifications before substitution.