Overview

Features and Benefits

  • Very small inherent latency variation: <2 DAC clock cycles
  • Proprietary low spurious and distortion design
    6-carrier GSM ACLR = 79 dBc at 200 MHz IF
    SFDR > 85 dBc (bandwidth = 300 MHz) at ZIF
  • Flexible 16-bit LVDS interface
    Supports word and byte load
  • Multiple chip synchronization
    Fixed latency and data generator latency compensation
  • Selectable 2×, 4×, 8× interpolation filter
    Low power architecture
    fS/4 power saving coarse mixer
  • Input signal power detection
    Emergency stop for downstream analog circuitry protection
  • FIFO error detection
  • See data sheet for additional features

Product Details

The AD9142 is a dual, 16-bit, high dynamic range digital-to-analog converter (DAC) that provides a sample rate of 1600 MSPS, permitting a multicarrier generation up to the Nyquist frequency. The AD9142 TxDAC+® includes features optimized for direct conversion transmit applications, including complex digital modulation, input signal power detection, and gain, phase, and offset compensation. The DAC outputs are optimized to interface seamlessly with analog quadrature modulators, such as the ADL537x F-MOD series and the ADRF670x series from Analog Devices, Inc. A 3-wire serial port interface provides for the programming/readback of many internal parameters. Full-scale output current can be programmed over a range of 9 mA to 33 mA. The AD9142 is available in a 72-lead LFCSP. PRODUCT HIGHLIGHTS
  1. Advanced low spurious and distortion design techniques provide high quality synthesis of wideband signals from baseband to high intermediate frequencies.
  2. Very small inherent latency variation simplifies both software and hardware design in the system. It allows easy multichip synchronization for most applications.
  3. New low power architecture improves power efficiency (mW/MHz/channel) by 30%.
  4. Input signal power and FIFO error detection simplify designs for downstream analog circuitry protection.
  5. Programmable transmit enable function allows easy design balance between power consumption and wakeup time.

APPLICATIONS
  • Wireless communications: 3G/4G and MC-GSM base stations,
    wideband repeaters, software defined radios
  • Wideband communications: point-to-point, LMDS/MMDS
  • Transmit diversity/MIMO
  • Instrumentation
  • Automated test equipment

Product Lifecycle icon-not-recommended Not Recommended for New Designs

This designates products ADI does not recommend broadly for new designs.

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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.

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The USA 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. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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