Overview

Features and Benefits

  • Nonvolatile memory maintains wiper settings 
  • 64-position digital potentiometer 
  • Compact MSOP-10 (3 mm × 4.9 mm) 
  • I2C-compatible interface
  • VLOGIC pin provides increased interface flexibility 
  • End-to-end resistance 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ

  • Resistance tolerance stored in EEPROM (0.1% accuracy) 
  • Power-on EEPROM refresh time
    <1 ms 
  • Software write protect command 
  • Address Decode Pin AD0 and
    Address Decode Pin AD1 allow four packages per bus 
  • 100-year typical data retention at 55°C 
  • Wide operating temperature
    −40°C to +85°C 

Product Details

The AD5258 provides a compact, nonvolatile 3 mm × 4.9 mm packaged solution for 64-position adjustment applications. These devices perform the same electronic adjustment function as mechanical potentiometers* or variable resistors, but with enhanced resolution and solid-state reliability.

The wiper settings are controllable through an I2C-compatible digital interface that is also used to read back the wiper register and EEPROM content in addition, resistor tolerance is stored within EEPROM, providing an end-to-end tolerance accuracy of 0.1%. There is also a software write protection function that ensures data cannot be written to the EEPROM register.

A separate VLOGIC pin delivers increased interface flexibility. For users who need multiple parts on one bus, Address Bit AD0 and Address Bit AD1 allow up to four devices on the same bus.

Applications

  • LCD panel VCOM adjustment
  • LCD panel brightness and contrast control
  • Mechanical potentiometer replacement in new designs
  • Programmable power supplies
  • RF amplifier biasing
  • Automotive electronics adjustment
  • Gain control and offset adjustment
  • Fiber to the home systems
  • Electronics level settings
  • *The terms digital potentiometer, VR (variable resistor), and RDAC are used interchangeably.

    Data Sheet, Rev. A, 3/07

    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.

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    PCN-PDN Information

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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.