AD9518-2ABCPZ-RL7

Overview

The AD9518-2ABCPZ-RL7 is a 6-output clock generator featuring an integrated voltage-controlled oscillator (VCO) with a tuning range of 2.05 GHz to 2.33 GHz. It supports up to 2.4 GHz via an external VCO or VCXO. The device provides three pairs of LVPECL outputs, each capable of operating up to 1.6 GHz and sharing a programmable divider from 1 to 32. Key electrical parameters include a supply voltage (VS) of 3.3 V nominal, a charge pump supply (VCP) up to 5.25 V, and an additive output jitter of 225 fs rms. It operates within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated VCO tunes from 2.05 GHz to 2.33 GHz; supports external VCO/VCXO up to 2.4 GHz
• Six LVPECL outputs in three pairs, supporting frequencies up to 1.6 GHz
• Additive output jitter of 225 fs rms with channel-to-channel skew under 10 ps for paired outputs
• Programmable delays and dividers (1 to 32) for each output pair

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

Procurement Notes

Verify the specific suffix RL7 against the manufacturer's ordering guide to confirm reel packaging specifications. Confirm that the AB grade meets the required temperature and performance criteria for the target application environment. Cross-reference the LFCSP-48 package dimensions with PCB footprint requirements.

Selection Notes

Select this component when subpicosecond jitter performance and low phase noise are critical for data converter applications. Ensure the design accommodates the 48-lead LFCSP package. Consider using an external VCO if frequencies above 2.33 GHz are required, noting that the VCP supply may need to be adjusted to 5 V for external oscillator support.

Part Context

The AD9518-2 is part of the AD9518 family, which includes variants like the AD9516 and AD9517. These devices share similar functionality but differ in package size and the number of available outputs. The AD9518-2 specifically offers six LVPECL outputs in a 48-lead LFCSP package, distinguishing it from other family members with different output counts.

Replacement Considerations

The AD9516 and AD9517 are functionally similar but have different output configurations and package sizes. For designs requiring additional outputs or EEPROM configuration, the AD9520 and AD9522 are available alternatives.