Features and Benefits

  • Low phase noise, phase-locked loop (PLL)
    On-chip VCO tunes from 1.75 GHz to 2.25 GHz
    External VCO/VCXO to 2.4 GHz optional
    1 differential or 2 single-ended reference inputs Reference monitoring capability
    Automatic revertive and manual reference switchover/holdover modes
    Accepts LVPECL, LVDS, or CMOS references to 250 MHz Programmable delays in path to PFD
    Digital or analog lock detect, selectable
  • 3 pairs of 1.6 GHz LVPECL outputs
    Each output pair shares a 1-to-32 divider with coarse phase delay
    Additive output jitter: 225 fs rms
    Channel-to-channel skew paired outputs of <10 ps
  • Automatic synchronization of all outputs on power-up
  • Manual output synchronization available
  • Available in a 48-lead LFCSP

Product Details

The AD9518-3The AD9518-31 provides a multi-output clock distribution function with subpicosecond jitter performance, along with an on-chip PLL and VCO. The on-chip VCO tunes from 1.75 GHz to 2.25 GHz. Optionally, an external VCO/VCXO of up to 2.4 GHz can be used.

The AD9518-3 emphasizes low jitter and phase noise to maximize data converter performance, and it can benefit other applications with demanding phase noise and jitter requirements.

The AD9518-3 features six LVPECL outputs (in three pairs). The LVPECL outputs operate to 1.6 GHz.

For applications that require additional outputs, a crystal reference input, zero-delay, or EEPROM for automatic configuration at startup, the AD9520 and AD9522 are available.

In addition, the AD9516 and AD9517 are similar to the AD9518 but have a different combination of outputs.

Each pair of outputs has dividers that allow both the divide ratio and coarse delay (or phase) to be set. The range of division for the LVPECL outputs is 1 to 32.

The AD9518-3 is available in a 48-lead LFCSP and can be operated from a single 3.3 V supply. An external VCO, which requires an extended voltage range, can be accommodated by connecting the charge pump supply (VCP) to 5 V. A separate LVPECL power supply can be from 2.5 V to 3.3 V (nominal).

The AD9518-3 is specified for operation over the industrial range of −40°C to +85°C.

  • Low jitter, low phase noise clock distribution
  • 10/40/100 Gb/sec networking line cards, including SONET, Synchronous Ethernet, OTU2/3/4
  • Forward error correction (G.710)
  • Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEs
  • High performance wireless transceivers
  • ATE and high performance instrumentation

1AD9518 is used throughout the data sheet to refer to all the members of the AD9518 family. However, when AD9518-3 is used, it refers to that specific member of the AD9518 family.

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Tools & Simulations

IBIS Models

AD9587-x IBIS Models

Design Tools

ADIsimCLK Design and Evaluation Software

ADIsimCLK is the design tool developed specifically for Analog Devices' range of ultra-low jitter clock distribution and clock generation products. Whether your application is in wireless infrastructure, instrumentation, networking, broadband, ATE or other areas demanding predictable clock performance, ADIsimCLK will enable you to rapidly develop, evaluate and optimize your design.

Product Recommendations

AD9518-3 Companion Parts

Recommended Reference Buffer

Recommended Reference Clean Up PLL

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.