1. Products
  2. RF and Microwave
  3. Quadrature Digital Up Converters (QDUC)
  4. AD9856


Features and Benefits

  • Universal Low Cost Modulator Solution for Communications Applications
  • DC to 80 MHz Output Bandwidth
  • Integrated 12-Bit D/A Converter
  • Programmable Sample Rate Interpolation Filter
  • Programmable Reference Clock Multiplier
  • Internal SIN(x)/x Compensation Filter
  • >52 dB SFDR @ 40 MHz AOUT
  • +3 V Single Supply Operation
  • >48 dB SFDR @ 70 MHz AOUT
  • >80 dB Narrowband SFDR @ 70 MHz AOUT
  • Space-Saving Surface-Mount Packaging
  • Bidirectional Control Bus Interface

Product Details

The AD9856 integrates a high-speed direct-digital synthesizer (DDS), a high-performance, high-speed 12-bit Digital-to-Analog converter (DAC), clock multiplier circuitry, digital filters, and other DSP functions onto a single chip, to form a complete quadrature digital upconverter device. The AD9856 is primarily intended to function as a universal upstream and downstream I/Q modulator for interactive HFC cable network applications, where cost, size, power dissipation, and dynamic performance are critical attributes.

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Documentation & Resources

  • View All (21)
  • Data Sheets (1)
  • Application Notes (9)
  • Product Highlight (1)
  • Technical Books (1)
  • Frequently Asked Questions (1)
  • Technical Articles (6)
  • Webcasts (2)
  • Application Notes
    Frequently Asked Questions

    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
    AD9856AST Material Declaration Reliability Data 48-Lead LQFP (7mm x 7mm)
    AD9856ASTZ Material Declaration Reliability Data 48-Lead LQFP (7mm x 7mm)
    Wafer Fabrication Data

    PCN-PDN Information

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    Sample & Buy

    Ordering FAQs

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    Buy Now Pricing

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    List Pricing

    (*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


    Lead Times

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