AD5228

32-Position Manual Up/Down Control Potentiometer
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Product Details

The AD5228 is Analog Devices’ latest 32-step-up/step-down control digital potentiometer emulating mechanical potenti-ometer operation1. Its simple up/down control interface allows manual control with just two external pushbutton tactile switches. The AD5228 is designed with a built-in adaptive debouncer that ignores invalid bounces due to contact bounce commonly found in mechanical switches. The debouncer is adaptive, accommodating a variety of pushbutton tactile switches that generally have less than 10 ms of bounce time during contact closures. When choosing the switch, the user should consult the timing specification of the switch to ensure its suitability in an AD5228 application.

The AD5228 can increment or decrement the resistance in discrete steps or in autoscan mode. When the PU or PD button is pressed briefly (no longer than 0.6 s), the resistance of the AD5228 changes by one step. When the PU or PD button is held continuously for more than a second, the device activates the autoscan mode and changes four resistance steps per second.

The AD5228 can also be controlled digitally; its up/down features simplify microcontroller usage. The AD5228 is available in a compact thin SOT-23-8 (TSOT-8) package. The part is guaranteed to operate over the automotive temperature range of −40°C to +105°C.

The AD5228’s simple interface, small footprint, and very low cost enable it to replace mechanical potentiometers and trimmers with typically 3× improved resolution, solid-state reliability, and faster adjustment, resulting in considerable cost saving in end users’ systems.

Users who consider EEMEM potentiometers should refer to the recommendations in the Applications section.

Applications

  • Mechanical potentiometer and trimmer replacements
  • LCD backlight, contrast, and brightness controls
  • Digital volume control
  • Portable device-level adjustments
  • Electronic front panel-level controls
  • Programmable power supply
  • 1 The terms digital potentiometer 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.

    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.

    AD5228 Material Declaration
    PCN-PDN Information Quality And Reliability Symbols and Footprints

    Reviews

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    Overview

    2 Reviews
    2 out of 2 (100%) customers recommend this product.
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    Most Helpful Review

    by Anonymous
    Don't know what should be done better. It's great..

    Most Recent Review

    by Eduardo
    We ordered and tested SSM2301, 05, TMP36, and other IC's are no tested. About SSM2305: We ordered 2 and 1 was tested. Apparently the IC was damaged, because not working correctly. We follow all recommendations of your datasheet but still not working correctly... SSM2301: We ordered 2 and 1 was tested. Working correctly, but did not pass the test. Has very little power... TMP36: Good device, this device approved our test. Personally, do not recommend SSM2301 for portable electronics.

    All Reviews

    by Eduardo, 19 Aug 14
    Review of requested samples.
    We ordered and tested SSM2301, 05, TMP36, and other IC's are no tested. About SSM2305: We ordered 2 and 1 was tested. Apparently the IC was damaged, because not working correctly. We follow all recommendations of your datasheet but still not working correctly... SSM2301: We ordered 2 and 1 was tested. Working correctly, but did not pass the test. Has very little power... TMP36: Good device, this device approved our test. Personally, do not recommend SSM2301 for portable electronics.
    Was this Helpful?Helpful(0)
    by Anonymous, 7 Nov 12
    Perfect alternative to analog potentiometer
    Don't know what should be done better. It's great..
    Was this Helpful?Helpful(0)

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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.