AD5231

Nonvolatile Memory, 1024-Position Digital Potentiometer
Manufactured by:

Product Details

The AD5231 is a nonvolatile memory*, digitally controlled potentiometer** with 1024-step resolution. The device performs the same electronic adjustment function as a mechanical potentiometer with enhanced resolution, solid state reliability, and remote controllability. The AD5231 has versatile programming that uses a standard 3-wire serial interface for 16 modes of operation and adjustment, including scratchpad programming, memory storing and restoring, increment/decrement, ±6 dB/step log taper adjustment, wiper setting readback, and extra EEMEM for user-defined information, such as memory data for other components, look-up table, or system identification information.

In scratchpad programming mode, a specific setting can be programmed directly to the RDAC register that sets the resistance between Terminals W–A and Terminals W–B. This setting can be stored into the EEMEM and is transferred automatically to the RDAC register during system power-on.

The EEMEM content can be restored dynamically or through external PR strobing, and a WP function protects EEMEM contents. To simplify the programming, the linear-step increment or decrement commands can be used to move the RDAC wiper up or down, one step at a time. The ±6 dB step commands can be used to double or half the RDAC wiper setting.

The AD5231 is available in a 16-lead TSSOP. The part is guaranteed to operate over the extended industrial temperature range of −40°C to +85°C.

Applications

  • Mechanical potentiometer replacement
  • Instrumentation: gain, offset adjustment
  • Programmable voltage to current conversion
  • Programmable filters, delays, time constants
  • Programmable power supply
  • Low resolution DAC replacement
  • Sensor calibration
  • *The terms nonvolatile memory and EEMEM are used interchangeably.
    **The terms digital potentiometer and RDAC are used interchangeably.

    Data Sheet, Rev. C, 1/07

    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.

    Software & Systems Requirements

    X+

    Design Resources

    X +

    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.

    AD5231 Material Declaration
    PCN-PDN Information Quality And Reliability Symbols and Footprints

    Discussions

    X+

    AD5231 Discussions

    Didn't find what you were looking for?

    Reviews

    X+

    Overview

    4 Reviews
    4 out of 4 (100%) customers recommend this product.
    Quality
    1
    2
    3
    4
    5
    Reliability
    1
    2
    3
    4
    5
    Features
    1
    2
    3
    4
    5

    Most Helpful Review

    by Anonymous
    A digital pot with up to four sets of wipers and better than 12bit resolution would be useful.

    Most Recent Review

    by JESSE
    Use it make us easy to design digital control power supply .

    All Reviews

    by JESSE, 4 Mar 14
    It what we need
    Use it make us easy to design digital control power supply .
    Was this Helpful?Helpful(0)
    by A320SimTeam, 11 Feb 14
    Nice product
    This EPOT is used for a programmable power supply unit. Main selection criteria were: amount of steps/resolution, availability of samples, reliability. Part is designed in.
    Was this Helpful?Helpful(0)
    by s4cral, 17 Dec 13
    AD5231 digital pot
    The AD5231 is an efficient device which performs quite well with only a couple of limitations. It would be nice if there was a package which had multiple digital pots per device at the same high 1024 step resolution. The package design could be changed to stop leakage from the digital pot load back into the controlling circuit. Merry Xmas ;)
    Was this Helpful?Helpful(0)
    by Anonymous, 9 Dec 12
    Performs well with 80Mhz SPI clock
    A digital pot with up to four sets of wipers and better than 12bit resolution would be useful.
    Was this Helpful?Helpful(0)

    Sample & Buy

    X+
    Back
    Check Inventory

    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