Overview

Features and Benefits

  • 256 positions
  • 10 kΩ, 100 kΩ, 1 MΩ
  • Low temperature coefficient: 30 ppm/°C
  • Single-supply 2.7 V to 5.5 V or dual-supply ±2.7 V for ac or bipolar operation
  • Internal power on midscale preset
  • I2C-compatible interface with readback capability
  • Extra programmable logic outputs
  • Self contained shutdown feature
  • Extended temperature range: −40°C to +105°C

Product Details

The AD5241 / AD52421 provide a single-/dual-channel, 256-position, digitally controlled variable resistor (VR) device. These 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. For the AD5242, the fixed A-to-B terminal resistance of 10 kΩ, 100 kΩ, or 1 MΩ has a 1% channel-to-channel matching tolerance. The nominal temperature coefficient of both parts is 30 ppm/°C.

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. Both parts have two extra programmable logic outputs available that enable users to drive digital loads, logic gates, LED drivers, and analog switches in their system.

The AD5241 / AD5242 are available in surface-mount, 14-lead SOIC and 16-lead SOIC packages and, for ultracompact solutions, 14-lead TSSOP and 16-lead TSSOP packages. All parts are guaranteed to operate over the extended temperature range of −40°C to +105°C.

APPLICATIONS

  • Multimedia, video, and audio
  • Communications
  • Mechanical potentiometer replacement
  • Instrumentation: gain, offset adjustment
  • Programmable voltage-to-current conversion
  • Line impedance matching

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.

Evaluation Kits (1)

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PCN-PDN Information

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Evaluation Boards

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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.