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10-Bit, Dual, Nonvolatile, Linear-Taper Digital Potentiometers

Product Details

Key Features

Applications/Uses

Parametric specs for Digital Potentiometers
Steps 1024
# Potentiometers 2
Control Interface 3-Wire Serial SPI
Taper Linear
Wiper Memory Non-Volatile
REND-TO-END (kΩ) 10
Res. Tol. (%) 25
Temp. Coeff. (ppm/°C) (typ) 35
ICC @5V (µA) (max) 1.5
Package/Pins TQFN/16
Budgetary
Price (See Notes)
4.2
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Simplified Block Diagram

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Parameters

Parametric specs for Digital Potentiometers
Steps 1024
# Potentiometers 2
Control Interface 3-Wire Serial SPI
Taper Linear
Wiper Memory Non-Volatile
REND-TO-END (kΩ) 10
Res. Tol. (%) 25
Temp. Coeff. (ppm/°C) (typ) 35
ICC @5V (µA) (max) 1.5
Package/Pins TQFN/16
Budgetary
Price (See Notes)
4.2

Key Features

  • Wiper Position Stored in Nonvolatile Memory and Recalled Upon Power-Up
  • 16-Pin, 5mm x 5mm x 0.8mm TQFN Package
  • 35ppm/°C End-to-End Resistance Temperature Coefficient
  • 5ppm/°C Ratiometric Temperature Coefficient
  • 10kΩ and 50kΩ End-to-End Resistor Values
  • 3-Wire SPI-Compatible Serial Interface
  • Reliability (TA = +85°C)
    • 50,000 Wiper Store Cycles
    • 50 Years Wiper Data Retention
  • 1.5µA (max) Standby Current
  • Single +2.7V to +5.25V Supply Operation
  • Dual ±2.5V Supply Operation

Applications/Uses

  • Gain and Offset Adjustment
  • LCD Contrast Adjustment
  • Low-Drift Programmable-Gain Amplifiers
  • Mechanical Potentiometer Replacement
  • Pressure Sensors
  • Volume Control

Description

The MAX5494–MAX5499 10-bit (1024-tap), dual, nonvolatile, linear-taper, programmable voltage-dividers and variable resistors perform the function of a mechanical potentiometer, but replace the mechanics with a 3-wire SPI™-compatible serial interface. The MAX5494/MAX5495 are dual, 3-terminal, programmable voltage-dividers; the MAX5496/MAX5497 are dual, 2-terminal variable resistors; and the MAX5498/MAX5499 include one 2-terminal variable resistor and one 3-terminal programmable voltage-divider.

The MAX5494–MAX5499 feature an internal, nonvolatile, electrically erasable programmable read-only memory (EEPROM) that stores the wiper position for initialization during power-up. The 3-wire SPI-compatible serial interface allows communication at data rates up to 7MHz.

The MAX5494–MAX5499 are ideal for applications requiring digitally controlled potentiometers. End-to-end resistance values of 10kΩ and 50kΩ are available with a 35ppm/°C end-to-end temperature coefficient. The ratiometric temperature coefficient is 5ppm/°C for each channel, making these devices ideal for applications requiring low-temperature-coefficient programmable voltage-dividers such as low-drift, programmable-gain amplifiers.

The MAX5494–MAX5499 operate with either a single power supply (+2.7V to +5.25V) or dual power supplies (±2.5V). The devices consume 400µA (max) of supply current when writing data to the nonvolatile memory and 1.5µA (max) of standby supply current. The devices are available in space-saving (5mm x 5mm x 0.8mm), 16-pin TQFN package and are specified over the extended (-40°C to +85°C) temperature range.

Simplified Block Diagram

MAX5494, MAX5495, MAX5496, MAX5497, MAX5498, MAX5499: Pin Configurations MAX5494, MAX5495, MAX5496, MAX5497, MAX5498, MAX5499: Pin Configurations Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

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Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .