AD5282

Single/Dual, +15 V/±5 V, 256-Position, I2C-Compatible Digital Potentiometer
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Product Details

The AD5280/AD5282 are single-channel and dual-channel, 256-position, digitally controlled variable resistors (VRs)2. The devices perform the same electronic adjustment function as a potentiometer, trimmer, or variable resistor. Each VR offers a completely programmable value of resistance between the A terminal and the wiper or the B terminal and the wiper. The fixed A-to-B terminal resistance of 20 kΩ, 50 kΩ, or 200 kΩ has a 1% channel-to-channel matching tolerance. The nominal temperature coefficient of both parts is 30 parts per million/ degrees centigrade (ppm/°C). Another key feature is that the parts can operate up to +15 V or ±5 V.

Wiper position programming defaults to midscale at system power-on. When powered, the VR wiper position is programmed by an I2C-compatible, 2-wire serial data interface. The AD5280/ AD5282 feature sleep mode programmability. This allows any level of preset in power-up and is an alternative to a costly EEPROM solution. Both parts have additional programmable logic outputs that enable users to drive digital loads, logic gates, LED drivers, and analog switches in their system.

The AD5280/AD5282 are available in thin, surface-mounted 14-lead TSSOP and 16-lead TSSOP. All parts are guaranteed to operate over the extended industrial temperature range of −40°C to +85°C. For 3-wire SPI-compatible interface applica-tions, see the AD5260/AD5262 product information on www.analog.com

Applications

  • Multimedia, video, and audio
  • Communications
  • Mechanical potentiometer replacement
  • Instrumentation: gain, offset adjustment
  • Programmable voltage source
  • Programmable current source
  • Line impedance matching
  • 1 Assert shutdown and program the device during power-up, then deassert the shutdown to achieve the desired preset level.
    2 The terms digital potentiometer, VR, and RDAC are used interchangeably.

    Data Sheet, Rev. C, 7/09

    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 AD5282 contains a parallel connection and software allowing the AD5282 to be controlled from a PC.

    Software & Systems Requirements

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    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.

    AD5282 Material Declaration
    PCN-PDN Information Quality And Reliability Symbols and Footprints

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    Overview

    4 Reviews
    4 out of 4 (100%) customers recommend this product.
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    Most Helpful Review

    by Anonymous
    I don't know if the industry requires it. But I like to have center tapped digital pot for audio purposes.

    Most Recent Review

    by Anonymous
    This digital potentiometer is easy to use and efficient One can hear some zippe noise when audio signal goes through it I will try the "zero crossing" implementation proposed in the datasheet of the AD5292

    All Reviews

    by Anonymous, 7 Feb 15
    Easy to use, efficient
    This digital potentiometer is easy to use and efficient One can hear some zippe noise when audio signal goes through it I will try the "zero crossing" implementation proposed in the datasheet of the AD5292
    Was this Helpful?Helpful(0)
    by analog-fox, 5 Oct 13
    high voltage potentiometer
    AD5282 is a very useful and versatile device, capable of handling voltages in the industrial voltage range, givving new persoectives. One thing to improve could be to tighten the tolerances
    Was this Helpful?Helpful(0)
    by analog-fox, 13 Aug 13
    digpot hints and constraints
    very good product, for standard applications. High voltage range is very usefull. Not recomended fpr very high precision applications, but voltage range is an outstanding feature in comarison to competitors
    Was this Helpful?Helpful(0)
    by Anonymous, 14 Mar 13
    Overall it does what I need
    I don't know if the industry requires it. But I like to have center tapped digital pot for audio purposes.
    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.


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    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.