Overview

Features and Benefits

  • Single-channel, 1024-position resolution
  • 10 kΩ nominal resistance
  • 50-times programmable (50-TP) wiper memory
  • Rheostat mode temperature coefficient: 35 ppm/°C 
  • 2.7 V to 5.5 V single-supply operation
  • ±2.5 V to ±2.75 V dual-supply
    operation for ac or bipolar operations

  • SPI-compatible interface
  • Wiper setting and memory readback
  • Power on refreshed from memory
  • Resistor Tolerance Stored in Memory
  • Thin LFCSP, 10-lead,
    3 mm x 3 mm x 0.8 mm package
  • Compact MSOP, 10-lead,
    3 mm × 4.9 mm × 1.1 mm package

Product Details

The AD5174 is a single-channel, 1024-position digital rheostat that combines industry leading variable resistor performance with nonvolatile memory (NVM) in a compact package.

This device supports both dual-supply operation at ±2.5 V to ±2.75 V and single-supply operation at 2.7 V to 5.5 V and offers 50-times programmable (50-TP) memory.

The AD5174 device wiper settings are controllable through the SPI digital interface. Unlimited adjustments are allowed before programming the resistance value into the 50-TP memory. The AD5174 does not require any external voltage supply to facilitate fuse blow and there are 50 opportunities for permanent programming. During 50-TP activation, a permanent blow fuse command freezes the resistance position (analogous to placing epoxy on a mechanical trimmer).

The AD5174 is available in a 3 mm × 3 mm 10-lead LFCSP package and in a 10-lead MSOP package. The part is guaranteed to operate over the extended industrial temperature range of −40°C to +125°C.

Applications

  • Mechanical rheostat replacements
  • Op-amp: variable gain control
  • Instrumentation: gain, offset adjustment
  • Programmable voltage-to-current conversions
  • Programmable filters, delays, time constants
  • Programmable power supply
  • Sensor calibration

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Design Resources

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.

PCN-PDN Information

Discussions

AD5174 Discussions

RE: LTC3780+AD5174
8 week(s) ago in Power By Linear
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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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