MAX5479

PRODUCTION

Dual, 256-Tap, Nonvolatile, I²C-Interface, Digital Potentiometers

Industry's Smallest, Dual, 256-Tap Digital Potentiometers Fit in 3mm x 3mm TQFN

Data Sheet (Rev. 5)
Part Models
4
1ku List Price
Starting From $2.73
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Part Details

  • Power-On Recall of Wiper Position from Nonvolatile Memory
  • EEPROM Write Protection
  • Tiny 3mm x 3mm x 0.8mm Thin QFN Package
  • 70ppm/°C End-to-End Resistance Temperature Coefficient
  • 10ppm/°C Ratiometric Temperature Coefficient
  • Fast 400kbps I²C-Compatible Serial Interface
  • 1µA (max) Static Supply Current
  • Single-Supply Operation: +2.7V to +5.25V
  • 256 Tap Positions per Potentiometer
  • ±0.5 LSB DNL in Voltage-Divider Mode
  • ±1 LSB INL in Voltage-Divider Mode
MAX5479
Dual, 256-Tap, Nonvolatile, I²C-Interface, Digital Potentiometers
MAX5477, MAX5478, MAX5479: Functional Diagram
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Documentation

Data Sheet 1

Reliability Data 1

Design Note 1

Technical Articles 1

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Digital to Analog Converters 3
MAX5417
PRODUCTION 256-Tap, Nonvolatile, I²C-Interface, Digital Potentiometers
MAX5419
PRODUCTION 256-Tap, Nonvolatile, I²C-Interface, Digital Potentiometers
MAX5422
PRODUCTION 256-Tap, Nonvolatile, SPI-Interface, Digital Potentiometers
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Evaluation Kits

MAX5478EVKIT

Evaluation Kit/Evaluation System for the MAX5477, MAX5478, and MAX5479

Buy Now View Details

Features and Benefits

  • Power-On Recall of Wiper Position from Nonvolatile Memory
  • 2.7V to 5.25V Single-Supply Operation
  • Configurable Device Address
  • I²C-Compatible Serial Interface
  • Easy-to-Use Menu-Driven Software
  • Include Windows 98-/2000-/XP-Compatible Software and Demo PC Board
  • Evaluate the MAX5477/MAX5478/MAX5479
  • Assembled and Tested

Product Details

The MAX5478 evaluation system (EV system) consists of a MAX5478 evaluation kit (EV kit) and a companion command module interface board (CMODUSB).

The MAX5478 EV kit is an assembled and tested PC board that features the MAX5478 50kΩ linear-taper dual digital potentiometer. The MAX5478 IC features an internal nonvolatile EEPROM used to store the potentiometer's wiper position for initialization during power-up. The EEPROM is programmed through the I²C-compatible serial interface, transmitting at rates up to 400kbps. The MAX5478 address can be programmed by configuring three input pins for a total of eight unique address combinations. The MAX5478 EV kit can also be used to evaluate the MAX5477 (10kΩ) or the MAX5479 (100kΩ) dual digital potentiometers.

The EV kit also includes Windows® 98-/2000-/XP-compatible software that provides a professional user interface for exercising the MAX5478's features. The program is menu-driven and offers a graphical user interface (GUI) complete with control buttons and track bars.

The CMODUSB command module allows a personal computer (PC) to use its USB port to emulate an I²C 2-wire interface. Order the MAX5478EVCMODU for a complete PC-based EV kit. Order the MAX5478EVKIT if a CMODUSB command module or an I²C-compatible 2-wire interface system has already been purchased with a Maxim EV system.

Applications

  • Liquid-Crystal Display (LCD) Contrast Control
  • Low-Drift Programmable-Gain Amplifiers
  • Mechanical Potentiometer Replacements
  • Volume Control

MAX5478EVCMODU

Evaluation Kit/Evaluation System for the MAX5477, MAX5478, and MAX5479

Buy Now View Details

Features and Benefits

  • Power-On Recall of Wiper Position from Nonvolatile Memory
  • 2.7V to 5.25V Single-Supply Operation
  • Configurable Device Address
  • I²C-Compatible Serial Interface
  • Easy-to-Use Menu-Driven Software
  • Include Windows 98-/2000-/XP-Compatible Software and Demo PC Board
  • Evaluate the MAX5477/MAX5478/MAX5479
  • Assembled and Tested

Product Details

The MAX5478 evaluation system (EV system) consists of a MAX5478 evaluation kit (EV kit) and a companion command module interface board (CMODUSB).

The MAX5478 EV kit is an assembled and tested PC board that features the MAX5478 50kΩ linear-taper dual digital potentiometer. The MAX5478 IC features an internal nonvolatile EEPROM used to store the potentiometer's wiper position for initialization during power-up. The EEPROM is programmed through the I²C-compatible serial interface, transmitting at rates up to 400kbps. The MAX5478 address can be programmed by configuring three input pins for a total of eight unique address combinations. The MAX5478 EV kit can also be used to evaluate the MAX5477 (10kΩ) or the MAX5479 (100kΩ) dual digital potentiometers.

The EV kit also includes Windows® 98-/2000-/XP-compatible software that provides a professional user interface for exercising the MAX5478's features. The program is menu-driven and offers a graphical user interface (GUI) complete with control buttons and track bars.

The CMODUSB command module allows a personal computer (PC) to use its USB port to emulate an I²C 2-wire interface. Order the MAX5478EVCMODU for a complete PC-based EV kit. Order the MAX5478EVKIT if a CMODUSB command module or an I²C-compatible 2-wire interface system has already been purchased with a Maxim EV system.

Applications

  • Liquid-Crystal Display (LCD) Contrast Control
  • Low-Drift Programmable-Gain Amplifiers
  • Mechanical Potentiometer Replacements
  • Volume Control
MAX5478EVKIT
Evaluation Kit/Evaluation System for the MAX5477, MAX5478, and MAX5479
MAX5478EVCMODU
Evaluation Kit/Evaluation System for the MAX5477, MAX5478, and MAX5479

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