1. Products
  2. RF and Microwave
  3. Quadrature Digital Up Converters (QDUC)
  4. AD9857


Features and Benefits

  • 200 MHz internal clock rate
  • 14-bit data path
  • Excellent dynamic performance: 80 dB SFDR @ 65 MHz (±100 kHz) AOUT
  • 4× to 20× programmable reference clock multiplier
  • Reference clock multiplier PLL lock detect indicator
  • Internal 32-bit quadrature DDS
  • FSK capability
  • 8-bit output amplitude control
  • Single-pin power-down function
  • Four programmable, pin-selectable signal profiles
  • SIN(x)/x correction (inverse SINC function)
  • Simplified control interface 10 MHz serial, 2-wire or 3-wire SPI®-compatible

Product Details

The AD9857 integrates a high speed direct digital synthesizer (DDS), a high performance, high speed, 14-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 AD9857 is intended to function as a universal I/Q modulator and agile upconverter, single-tone DDS, or interpolating DAC for communications applications, where cost, size, power dissipation, and dynamic performance are critical attributes.

The AD9857 offers enhanced performance over the industry-standard AD9856, as well as providing additional features.

The AD9857 is available in a space-saving, surface-mount package and is specified to operate over the extended industrial temperature range of −40°C to +85°C.


  • HFC data, telephony, and video modems
  • Wireless base station
  • Agile, LO frequency synthesis
  • Broadband communications

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.

Evaluation Kits (1)

Documentation & Resources

  • View All (20)
  • Evaluation Design File (1)
  • Data Sheet (1)
  • Application Note (7)
  • Product Highlight (1)
  • Technical Book (1)
  • Frequently Asked Question (1)
  • Technical Article (6)
  • Webcast (2)
  • Application Note
    Frequently Asked Question

    Tools & Simulations

    IBIS Model

    AD9857 IBIS Models

    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
    AD9857ASTZ Material Declaration Reliability Data 80-Lead LQFP (14mm x 14mm)
    Wafer Fabrication Data

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    Sample & Buy

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    Buy Now Pricing

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    List Pricing

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