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MAX5478 - Digital Potentiometers

Download the MAX5478 datasheet PDF. This datasheet also covers the MAX5477 variant, as both devices belong to the same digital potentiometers family and are provided as variant models within a single manufacturer datasheet.

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.

Key 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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MAX5477_Maxim.pdf) that lists specifications for multiple related part numbers.

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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.