AD9518-3ABCPZ

Overview

The AD9518-3ABCPZ is a 6-output clock generator from Analog Devices featuring an integrated voltage-controlled oscillator (VCO) with a tuning range of 1.75 GHz to 2.25 GHz. It supports external VCOs up to 2.4 GHz and provides three pairs of LVPECL outputs operating up to 1.6 GHz. The device includes programmable delays, reference monitoring, and automatic synchronization. It operates on a single 3.3 V supply and is specified for industrial temperatures from -40°C to +85°C in a 48-lead LFCSP package.

Feature Summary

• Integrated VCO tunes from 1.75 GHz to 2.25 GHz; supports external VCO/VCXO up to 2.4 GHz
• Three pairs of LVPECL outputs with 1-to-32 dividers and coarse phase delay
• Additive output jitter of 225 fs rms; channel-to-channel skew <10 ps
• Accepts LVPECL, LVDS, or CMOS references up to 250 MHz

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct packaging and temperature grade. Confirm that the required supply voltages match the design specifications, as the VCP pin may require up to 5 V for external VCO operation while the main supply remains at 3.3 V.

Selection Notes

Select this component when subpicosecond jitter performance and low phase noise are critical for data converter applications. Ensure the system requires six LVPECL outputs and can accommodate the 48-lead LFCSP package. Consider the AD9520 or AD9522 if additional outputs, crystal reference inputs, or EEPROM configuration capabilities are needed.

Part Context

The AD9518-3 is part of the AD9518 family of multi-output clock generators. It shares the same functional architecture and package as other variants but differs primarily in the frequency range of its integrated VCO. Other family members include the AD9518-0, AD9518-1, AD9518-2, and AD9518-4, which offer different VCO tuning ranges.

Replacement Considerations

The AD9518-0, AD9518-1, AD9518-2, and AD9518-4 are functionally similar within the same family but feature different integrated VCO frequency ranges. Verify that the specific VCO tuning requirements of the application align with the replacement variant's specifications.