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Dual, 256-Tap, Nonvolatile, SPI-Interface, Linear-Taper Digital Potentiometers

Product Details

Key Features

Parametric specs for Digital Potentiometers
Steps 256
# Potentiometers 2
Control Interface 3-Wire Serial SPI
Taper Linear
Wiper Memory Non-Volatile
REND-TO-END (kΩ) 50
Res. Tol. (%) 25
Temp. Coeff. (ppm/°C) (typ) 35
Wiper Resistance (Ω) (typ) 325
ICC @5V (µA) (max) 1
Package/Pins TQFN/16
TSSOP/14
Budgetary
Price (See Notes)
2.11
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Simplified Block Diagram

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Parameters

Parametric specs for Digital Potentiometers
Steps 256
# Potentiometers 2
Control Interface 3-Wire Serial SPI
Taper Linear
Wiper Memory Non-Volatile
REND-TO-END (kΩ) 50
Res. Tol. (%) 25
Temp. Coeff. (ppm/°C) (typ) 35
Wiper Resistance (Ω) (typ) 325
ICC @5V (µA) (max) 1
Package/Pins TQFN/16
TSSOP/14
Budgetary
Price (See Notes)
2.11

Key Features

  • Wiper Position Stored in Nonvolatile Memory (EEPROM) and Recalled Upon Power-Up or Recalled by an Interface Command
  • 3mm x 3mm x 0.8mm, 16-Pin Thin QFN or 14-Pin TSSOP Packages
  • ±1 LSB INL, ±0.5 LSB DNL (Voltage-Divider Mode)
  • 256 Tap Positions
  • 35ppm/°C End-to-End Resistance Temperature Coefficient
  • 5ppm/°C Ratiometric Temperature Coefficient
  • 10kΩ, 50kΩ, and 100kΩ End-to-End Resistance Values
  • SPI-Compatible Serial Interface
  • Reliability
    • 200,000 Wiper Store Cycles
    • 50-Year Wiper Data Retention
  • +2.7V to +5.25V Single-Supply Operation

Applications/Uses

  • Audio Volume Control
  • LCD Screen Adjustment
  • Low-Drift Programmable Filters
  • Low-Drift Programmable-Gain Amplifiers
  • Mechanical Potentiometer Replacement

Description

The MAX5487/MAX5488/MAX5489 dual, linear-taper, digital potentiometers function as mechanical potentiometers with a simple 3-wire SPI™-compatible digital interface that programs the wipers to any one of 256 tap positions. These digital potentiometers feature a nonvolatile memory (EEPROM) to return the wipers to their previously stored positions upon power-up.

The MAX5487 has an end-to-end resistance of 10kΩ, while the MAX5488 and MAX5489 have resistances of 50kΩ and 100kΩ, respectively. These devices have a low 35ppm/°C end-to-end temperature coefficient, and operate from a single +2.7V to +5.25V supply.

The MAX5487/MAX5488/MAX5489 are available in 16-pin 3mm x 3mm x 0.8mm thin QFN or 14-pin TSSOP packages. Each device is guaranteed over the extended -40°C to +85°C temperature range.

Simplified Block Diagram

MAX5487, MAX5488, MAX5489: Functional Diagram MAX5487, MAX5488, MAX5489: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

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