AD9518-2BCPZ

Overview

The AD9518-2BCPZ is a six-output clock generator featuring an integrated voltage-controlled oscillator (VCO) with a tuning range of 2.05 GHz to 2.33 GHz. It supports external VCO/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 2.05 GHz to 2.33 GHz; optional external VCO/VCXO support 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 LVPECL, LVDS, or CMOS signals up to 250 MHz with automatic switchover

Applications

• Low jitter, low phase noise clock distribution systems
• Clocking high-speed ADCs, DACs, DDSs, DDCs, DUCs, and MxFE transceivers
• High-performance wireless transceiver architectures
• ATE and high-performance instrumentation equipment

Procurement Notes

Verify the specific suffix 'BCPZ' against the manufacturer's current ordering guide to confirm package type and tape/reel specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement. Ensure the selected variant matches the required lead frame and marking details for the target assembly process.

Selection Notes

Select the AD9518-2BCPZ when subpicosecond jitter performance and low phase noise are critical for maximizing data converter or transceiver performance. Choose this component over the AD9518-0 or AD9518-4 if the application requires the specific 2.05 GHz to 2.33 GHz internal VCO tuning range. Verify that the 1.6 GHz maximum LVPECL output frequency meets the system timing requirements.

Part Context

The AD9518-2 is a member of the AD9518 family, which also includes the AD9516 and AD9517. These variants share similar functional blocks but differ in package size and the number of available outputs. The AD9518-2 specifically utilizes a 48-lead LFCSP package to accommodate its six LVPECL output drivers and associated control logic.

Replacement Considerations

The AD9516 and AD9517 are functionally similar members of the same family, differing primarily in package dimensions and output count. For applications requiring additional outputs or EEPROM configuration, the AD9520 and AD9522 are available alternatives.