Overview

Features and Benefits

  • Flexible reconfigurable radio common platform design
    • 4D2A (4 × 12 GSPS 16-bit DAC + 2 × 6 GSPS 12-bit ADC)
    • 4D1A (4 × 12 GSPS 16-bit DAC + 1 × 6 GSPS 12-bit ADC)
    • Transmit/receive channel bandwidth up to 1.2 GHz/2.4 GHz (4T2R)
    • Transmit/receive channel bandwidth up to 2.4 GHz/2.4 GHz (2T2R)
    • RF DAC/RF ADC output/input −3 dB bandwidth of 5.2 GHz and 7.5 GHz
    • On-chip PLL with multichip synchronization
      • External RF clock input option
  • ADC ac performance at 6 GSPS
    • Full-scale input voltage: 1.475 V p-p
    • Noise density: −153 dBFS/Hz
    • Noise figure: 25.3 dB
    • HD2: −65.2 dBFS at 2.7 GHz
    • HD3: −70.8 dBFS at 2.7 GHz
    • Worst other (excluding HD2 and HD3): −68.5 dBFS at 2.7 GHz
  • DAC ac performance at 12 GSPS
    • Full-scale output current range: 7 mA to 40 mA
    • 2-tone IMD3 (−7 dBFS per tone): −78.9 dBc
    • Noise spectral density (NSD), single-tone at 3.7 GHz: −155.1 dBc/Hz
    • Spurious free dynamic range (SFDR), single-tone at 3.7 GHz: −70 dBc
  • Versatile digital features
    • Selectable interpolation and decimation filters
    • Configurable digital down conversion (DDC) and digital up conversion (DUC)
      • 8 fine complex DUCs and 4 coarse complex DUCs
      • 8 fine complex DDCs and 4 coarse complex DDCs
      • 48-bit numerically controlled oscillator (NCO) per DUC/DDC
      • Option to bypass fine DUC/DDC
    • 15 mm × 15 mm BGA with 0.8 mm pitch
    • Programmable 192 tap programmable filter (PFIR) for receive equalization
      • Supports 4 different profile settings loaded via GPIO
      • Programable delay per data path
      • Receive automatic gain control (AGC) support
        • Fast detect with low latency for fast AGC control
        • Signal monitor for slow AGC control
        • Dedicated AGC support pins
    • Transmit DPD support
      • Fine DUC channel gain control and delay adjust
      • Coarse DDC delay adjust for DPD observation path
    • Versatile digital features
      • Supports real or complex digital data (8-bit, 12-bit, or 16-bit)
      • Configurable digital up/down conversion (DDC/DUC)
        • 8 fine complex DUCs and 4 coarse complex DUCs
        • 8 fine complex DDCs and 4 coarse complex DDCs
        • 2 independent NCO per DUC/DDC
        • Option to bypass fine DUC/DDC
    • Auxiliary features
      • ADC clock driver with selectable divide ratios
      • PA downstream protection circuitry
      • On-chip temperature sensor
      • Programmable GPIO pins
      • ADC clock driver with selectable divide ratios
      • TDD power savings option
    • SERDES JESD204B/C Interface, 16 lanes up to 24.75 Gbps
      • 8 receive lanes for RFDAC
      • 8 transmit lanes for RFADC
      • JESD204B compatible with the maximum 15.5 Gbps lane rate
      • JESD204C compatible with the maximum 24.75 Gbps lane rate
      • Sample/bit repeat mode for receive lane rate matching

Product Details

The transmit signal front-end (TxFE) is a highly integrated device with 16-bit, 12 GSPS maximum sample rate RF digital-to-analog converter (DAC) core and 12-bit, 6 GSPS rate RF analog-to-digital converter (ADC) core. The AD9986 is able to support four transmitter channels and two receiver channels with 4D2A configuration. This device is well suited for 2-antenna and 4-antenna transmitter applications requiring wideband ADCs for the digital predistortion (DPD) observation path. It features a sixteen lane 24.75 Gbps JESD204C or 15.5 Gbps JESD204B data transceiver port, an on-chip clock multiplier, and digital signal processing capability targeted at multiband direct-to-RF radio applications. It supports up to a 6 GSPS complex transmit and receive data rate in single channel mode. The maximum radio band spacing supported in multichannel mode is 1.2 GHz.

APPLICATIONS

  • Wireless communications infrastructure
  • W-CDMA, LTE, LTE-A, massive MIMO
  • Microwave point-to-point, E-band, and 5G mm wave Broadband communications systems
  • Data over cable service interface specification (DOCSIS) 3.0 cable modem termination system (CMTS)
  • Communications test and measurement system

Product Lifecycle icon-recommended Pre-Release

This product is new and engineering validation may still be underway. Quantities may be limited and design specifications may change while we ready the product for release to production.

Evaluation Kits (1)

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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.

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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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Evaluation Boards Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
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.