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MAX5487, MAX5488, MAX5489
Dual, 256-Tap, Nonvolatile, SPI-Interface, Linear-Taper Digital Potentiometers


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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 484kB)
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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.

An evaluation kit is available:  MAX5488EVKIT  

NOTE: This product requires use of the following:

  • MAX5488 EVKIT Software

    Key Features   Applications/Uses
    • 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
    • EV Kit Available
     
    • Audio Volume Control
    • LCD Screen Adjustment
    • Low-Drift Programmable Filters
    • Low-Drift Programmable-Gain Amplifiers
    • Mechanical Potentiometer Replacement

    Key Specifications:  Digital Potentiometers
    Part Number Taper POTs Control Interface Wiper Memory Steps REND-TO-END
    (kΩ)
    Res. Tol.
    (%)
    Temp. Coeff.
    (ppm/°C)
    Wiper Resistance
    (Ω)
    ICC @5V
    (µA)
    Smallest Available Pckg.
    (mm2)
    Price
    typ typ max max w/pins See Notes
    MAX5487  Linear 2 3-Wire Serial SPI Non-Volatile 256 10 25 35 325 1 9.6 $1.60 @1k
    MAX5488  50 33.4 $1.60 @1k
    MAX5489  100 9.6 $1.60 @1k
    See All Digital Potentiometers (123)

    Diagram
    MAX5487, MAX5488, MAX5489: Functional Diagram
    Functional Diagram

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    Document Ref.: 19-3478; Rev 3; 2007-03-01
    This page last modified: 2009-10-06


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