Overview

Features and Benefits

  • Flexible LVDS interface allows word, byte, or nibble load
  • Single-carrier W-CDMA ACLR = 82 dBc @ 122.88 MHz IF
  • Analog output: adjustable 8.7 mA to 31.7 mA, RL = 25 Ω to 50 Ω
  • Integrated 2×/4×/8× interpolator/complex modulator allows
    carrier placement anywhere in the DAC bandwidth
  • Gain, dc offset, and phase adjustment for sideband suppression
  • Multiple chip synchronization interfaces
  • High performance, low noise PLL clock multiplier
  • Digital inverse sinc filter
  • Low power: 1.5 W at 1.2 GSPS, 800 mW at 500 MSPS, full operating conditions
  • 72-lead, exposed paddle LFCSP 
AD9122-EP supports defense and aerospace applications (AQEC standard)
  • Download AD9122-EP data sheet (pdf)
  • Military temperature range (such as −55°C to +105°C)
  • Controlled manufacturing baseline
  • One assembly/test site
  • One fabrication site
  • Enhanced product change notification
  • Qualification data available on request
  • V62/12654 DSCC Drawing Number

Product Details

The AD9122 is a dual 16-bit, high dynamic range, digital-to-analog converter (DAC) that provides a sample rate of 1230 MSPS, permitting a multicarrier generation up to the Nyquist frequency. It includes features optimized for direct conversion transmit applications, including complex digital modulation, and gain and offset compensation. The DAC outputs are optimized to interface seamlessly with analog quadrature modulators, such as the ADL537x F-MOD series from Analog Devices, Inc. A 4-wire serial port interface provides for programming/readback of many internal parameters. Full-scale output current can be programmed over a range of 8.7 mA to 31.7 mA. The AD9122 comes in a 72-lead LFCSP.

The AD9122-EP supports defense and aerospace applications (AQEC).

PRODUCT HIGHLIGHTS

  1. Ultralow noise and intermodulation distortion (IMD) enable high quality synthesis of wideband signals from baseband to high intermediate frequencies.
  2. A proprietary DAC output switching technique enhances dynamic performance.
  3. The current outputs are easily configured for various single-ended or differential circuit topologies.
  4. Flexible LVDS digital interface allows the standard 32-wire bus to be reduced to ½ or ¼ of the width.

 

APPLICATIONS

  • Wireless infrastructure
  • W-CDMA, CDMA2000, TD-SCDMA, WiMAX, GSM, LTE
  • Digital high or low IF synthesis
  • Transmit diversity
  • Wideband communications: LMDS/MMDS, point-to-point

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 (4)

Documentation & Resources

  • View All (13)
  • Data Sheets (3)
  • Application Notes (2)
  • User Guides (1)
  • Solutions Bulletins & Brochures (1)
  • Circuit Note (2)
  • Technical Articles (2)
  • Press Releases (2)
  • Tools & Simulations

    IBIS Models

    Design Tools

    ADIsimRF

    ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

    Reference Designs (2)

    Product Recommendations

    AD9122 Companion Parts

    Recommended Quadrature Modulators

    Recommended Clock Drivers

    Recommended Output Amplifiers

    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.