MAX5479
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MAX5479

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

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

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1ku List Price Starting From $2.73
Features
  • 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
Additional Details
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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. The fast-mode I²C-compatible serial interface allows communication at data rates up to 400kbps, minimizing board space and reducing interconnection complexity in many applications. Three address inputs allow a total of eight unique address combinations.
The MAX5477/MAX5478/MAX5479 provide three nominal resistance values: 10kΩ (MAX5477), 50kΩ (MAX5478), or 100kΩ (MAX5479). The nominal resistor temperature coefficient is 70ppm/°C end-to-end and 10ppm/°C ratiometric. The low temperature coefficient makes the devices ideal for applications requiring a low temperature- coefficient variable resistor, such as low drift, programmable gain-amplifier circuit configurations.
The MAX5477/MAX5478/MAX5479 are available in 16-pin 3mm x 3mm x 0.8mm TQFN and 14-pin 4.4mm x 5mm TSSOP packages. These devices operate over the extended -40°C to +85°C temperature range.

Applications

  • Liquid-Crystal Display (LCD) Contrast Control
  • Low-Drift Programmable-Gain Amplifiers
  • Mechanical Potentiometer Replacements
  • Volume Control
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file View Data Sheet (Rev.5)
Documentation View All Documentation
Part Models 4
1ku List Price Starting From $2.73
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MAX5479

Documentation

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Data Sheet

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UPDATED 01/30/2012
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MAX5477-MAX5479: Dual, 256-Tap, Nonvolatile, I²C-Interface, Digital Potentiometers Data Sheet (Rev.5)

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UPDATED 08/29/2006
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MAX5477-MAX5479_cn: 双路、256抽头、非易失、I²C接口、数字电位器 Data Sheet (Rev.4)

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Reliability Data

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UPDATED 01/12/2023
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MAX5479 Reliability Data redirect icon

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Technical Articles

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UPDATED 03/08/2007
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Logging the Linear Digital Potentiometer redirect icon

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UPDATED 07/31/2007
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用线性数字电位器实现对数调节\r\n\r\n redirect icon

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UPDATED 07/17/2007
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リニアディジタルポテンショメータの対数応用 redirect icon

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UPDATED 05/15/2008
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Using an Analog Voltage to Control a Digital Potentiometer redirect icon

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UPDATED 07/02/2008
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使用模拟电压控制数字电位器 redirect icon

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UPDATED 07/21/2008
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アナログ電圧を使用したディジタルポテンショメータの制御 redirect icon

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Documentation

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. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX5479ETE+ 16-LFCSP-3X3X0.75 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
MAX5479ETE+T 16-LFCSP-3X3X0.75 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
MAX5479EUD+ Thin Shrink Small-Outline Package external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
MAX5479EUD+T Thin Shrink Small-Outline Package external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link

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