Features and Benefits

  • HART-compliant fully integrated FSK modem
  • 1200 Hz and 2200 Hz sinusoidal shift frequencies
  • 115 µA maximum supply current in receive mode
  • Suitable for intrinsically safe applications
  • Integrated receive band-pass filter
    • Minimal external components required
  • Clocking optimized for various system configurations
    • Ultralow power crystal oscillator (60 µA maximum)
    • External CMOS clock source
  • Buffered HART output—extra drive capability
  • 8 kV HBM ESD rating
  • 1.71 V to 5.5 V power supply
  • 1.71 V to 5.5 V interface
  • −40°C to +125°C operation
  • 4 mm × 4 mm LFCSP package
  • HART physical layer compliant
  • UART interface

Product Details

The AD5700/AD5700-1 are single-chip solutions, designed and specified to operate as a HART® FSK half-duplex modem, complying with the HART physical layer requirements. The AD5700/AD5700-1 integrate all of the necessary filtering, signal detection, modulating, demodulating and signal generation functions, thus requiring few external components. The 0.5% precision internal oscillator on the AD5700-1 greatly reduces the board space requirements, making it ideal for line-powered applications in both master and slave configurations. The maximum supply current consumption is 115µA, making theAD5700/AD5700-1 an optimal choice for low power loop-powered applications. Transmit waveforms are phase continuous 1200 Hz and 2200 Hz sinusoids. The AD5700/AD5700-1 contain accurate carrier detect circuitry and use a standard UART interface.


  • Field transmitters
  • HART multiplexers
  • PLC and DCS analog I/O modules
  • HART network connectivity

Design News Golden Mousetrap Award 2012

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 (21)
  • Data Sheets (1)
  • Application Notes (1)
  • User Guides (1)
  • Solutions Bulletins & Brochures (1)
  • Circuit Note (4)
  • Technical Articles (7)
  • Videos (2)
  • Press Releases (3)
  • Webcasts (1)
  • Technical Articles

    Tools & Simulations

    Reference Designs (4)

    Product Recommendations

    AD5700 Companion Parts

    Recommended Output DAC's

    • For 16-bit, loop powered, 4 mA to 20 mA DAC: AD5421.
    • For 16-bit, quad-channel, 4 mA to 20 mA and voltage output DAC: AD5755-1.
    • For 12-bit /16-bit, current source and voltage output DAC's: AD5412, AD5422.
    • For 12-bit /16-bit, line powered, 4 mA to 20 mA current source DAC's: AD5410, AD5420.

    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

    Sample & Buy

    See our Ordering FAQs for answers to questions about online orders, payment options and more.


    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.

    Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

    Price Table Help


    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.