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MAX5479 - Digital Potentiometers

This page provides the datasheet information for the MAX5479, a member of the MAX5477 Digital Potentiometers family.

Description

The MAX5477/MAX5478/MAX5479 nonvolatile, dual, linear-taper, digital potentiometers perform the function of a mechanical potentiometer, but replace the mechanics with a simple 2-wire digital interface.

Features

  • Power-On Recall of Wiper Position from Nonvolatile Memory.
  • EEPROM Write Protection.
  • Tiny 3mm x 3mm x 0.8mm Thin QFN Package.
  • 35ppm/°C End-to-End Resistance Temperature Coefficient.
  • 5ppm/°C Ratiometric Temperature Coefficient Fast 400kbps I2C†-Compatible Serial Interface 1µA (max) Static Supply Current Single-Supply Operation: +2.7V to +5.25V MAX5477/MAX5478/MAX5479.
  • 256 Tap Positions per Potentiometer.

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Full PDF Text Transcription

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19-3379; Rev 2; 12/04 www.DataSheet4U.com Dual, 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers General Description The MAX5477/MAX5478/MAX5479 nonvolatile, dual, linear-taper, digital potentiometers perform the function of a mechanical potentiometer, but replace the mechanics with a simple 2-wire digital interface. Each device performs the same function as a discrete potentiometer or variable resistor and has 256 tap points. The devices feature an internal, nonvolatile EEPROM used to store the wiper position for initialization during power-up. A write-protect feature prevents accidental overwrites of the EEPROM.
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