64-Position, One-Time-Programmable (OTP) Digital Potentiometer
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Product Details

The AD5273 is a 64-position, one-time programmable (OTP) digital potentiometer4 that employs fuse link technology to achieve permanent program setting. This device performs the same electronic adjustment function as most mechanical trimmers and variable resistors. It allows unlimited adjustments before permanently setting the resistance values. The AD5273 is programmed using a 2-wire, I2C®-compatible digital control. During write mode, a fuse blow command is executed after the final value is determined, thereby freezing the wiper position at a given setting (analogous to placing epoxy on a mechanical trimmer). When the permanent setting is achieved, the value does not change, regardless of the supply variations or environ-mental stresses under normal operating conditions. To verify the success of permanent programming, Analog Devices, Inc., patterned the OTP validation such that the fuse status can be discerned from two validation bits in the read mode.

In addition, for applications that program the AD5273 at the factory, Analog Devices offers device programming software2 running on Windows® NT®, Windows 2000, and Windows XP operating systems. This software application effectively replaces any external I2C controllers, which in turn enhances the user system’s time-to-market.p>

The AD5273 is available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ resistances and in a compact 8-lead SOT-23 standard package. It operates from −40°C to +105°C.

Along with its unique OTP feature, the AD5273 lends itself well to general digital potentiometer applications due to its effective resolution, array resistance options, small footprint, and low cost.

An AD5273 evaluation kit and software are available. The kit includes the connector and cable that can be converted for factory programming applications.

For applications that require dynamic adjustment of resistance settings with nonvolatile EEMEM, users should refer to the AD523x and AD525x families of nonvolatile memory digital potentiometers.


  • System calibrations
  • Electronics level settings
  • Mechanical potentiometers and trimmer replacement
  • Automotive electronics adjustments
  • Transducer circuit adjustments
  • Programmable filters up to 6 MHz BW3

  • 1 OTP allows unlimited adjustments before permanent setting.
    2 Analog Devices cannot guarantee the software to be 100% compatible to all systems due to the wide variation in computer configurations.
    3 Applies to 1 kΩ parts only.
    4 The terms digital potentiometer, VR, and RDAC are used interchangeably.

    Product Lifecycle

    checked 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

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    Product Details

    The evaluation board for the AD5273 contains an SDP connection and software which allows the AD5273 to be controlled from an SDP board.

    This evaluation board requires an SDP Controller board for connection to the PC. The SDP controller board connects to the PC via USB 2.0. The evaluation board will connect to the SDP controller board. The evaluation board cannot be connected directly to the PC. The evaluation software running on the PC will communicate with the evaluation board through the SDP Controller board.

    The SDP Controller board is a separate list item in the ordering guide below (EVAL-SDP-CS1Z). If you have not previously purchased an SDP Controller board, please do so to ensure a full evaluation setup.

    Software & Systems Requirements


    Design Resources

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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.

    AD5273 Material Declaration
    PCN-PDN Information Quality And Reliability Symbols and Footprints



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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.

    Price Table Help

    Evaluation Boards Pricing displayed is based on 1-piece.
    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.