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  2. Clock and Timing
  3. Clock Generation and Distribution
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  5. AD9520-3


Overview

Features and Benefits

  • Low phase noise, phase-locked loop (PLL)
  • On-chip VCO tunes from 1.72 GHz to 2.25 GHz
  • Auto and manual reference switchover/holdover modes
  • Zero delay operation optional
  • Twelve 1.6 GHz LVPECL/CMOS outputs divided into four groups
  • Each group of 4 has a 1 to 32 divider with phase delay
  • SPI- and I2C-compatible control port
  • Nonvolatile EEPROM stores configuration settings

Product Details

The AD9520-31 provides a multioutput clock distribution function with subpicosecond jitter performance, along with an on-chip PLL and VCO. The on-chip VCO tunes from 1.72 GHz to 2.25 GHz. An external 3.3 V/5 V VCO/VCXO of up to 2.4 GHz can also be used.

The AD9520 serial interface supports both SPI and I2C® ports. An in-package EEPROM can be programmed through the serial interface and store user-defined register settings for power-up and chip reset.

The AD9520 features 12 LVPECL outputs in four groups. Any of the 1.6 GHz LVPECL outputs can be reconfigured as two 250 MHz CMOS outputs.

Each group of outputs has a divider that allows both the divide ratio (from 1 to 32) and the phase (coarse delay) to be set.

The AD9520 is available in a 64-lead LFCSP and can be operated from a single 3.3 V supply. The external VCO can have an operating voltage up to 5.5 V. A separate output driver power supply can be from 2.375 V to 3.465 V.

The AD9520 is specified for operation over the standard industrial range of −40°C to +85°C.

1The AD9520 is used throughout this data sheet to refer to all the members of the AD9520 family. However, when AD9520-3 is used, it is referring to that specific member of the AD9520 family.

Applications

  • Low jitter, low phase noise clock distribution
  • Clock generation and translation for SONET, 10Ge, 10G FC, and other 10 Gbps protocols
  • Forward error correction (G.710)
  • Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEs
  • High performance wireless transceivers
  • ATE and high performance instrumentation
  • Broadband infrastructures

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)

Documentation & Resources

  • View All (22)
  • Data Sheets (1)
  • Application Notes (2)
  • User Guides (1)
  • Demo Board Schematic (2)
  • Frequently Asked Questions (1)
  • Product Selection Guide (1)
  • Circuit Note (1)
  • Videos (1)
  • Rarely Asked Questions (12)
  • Frequently Asked Questions
    Rarely Asked Questions

    Tools & Simulations

    IBIS Models

    AD9520-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.

    Reference Designs (1)

    Product Recommendations

    AD9520-3 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.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    AD9520-3BCPZ Material Declaration Reliability Data 64-Lead LFCSP (9mm x 9mm w/ EP)
    AD9520-3BCPZ-REEL7 Material Declaration Reliability Data 64-Lead LFCSP (9mm x 9mm w/ EP)
    Wafer Fabrication Data

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