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32-Tap, One-Time Programmable, Linear-Taper Digital Potentiometers

Product Details

Key Features

Applications/Uses

Parametric specs for Digital Potentiometers
Steps 32
# Potentiometers 1
Control Interface Up/Down
Taper Linear
Wiper Memory Non-Volatile OTP
REND-TO-END (kΩ) 100
Res. Tol. (%) 25
Temp. Coeff. (ppm/°C) (typ) 35
Wiper Resistance (Ω) (typ) 100
ICC @5V (µA) (max) 1.5
Package/Pins TDFN/8
UMAX/8
Budgetary
Price (See Notes)
0.83
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Simplified Block Diagram

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Parameters

Parametric specs for Digital Potentiometers
Steps 32
# Potentiometers 1
Control Interface Up/Down
Taper Linear
Wiper Memory Non-Volatile OTP
REND-TO-END (kΩ) 100
Res. Tol. (%) 25
Temp. Coeff. (ppm/°C) (typ) 35
Wiper Resistance (Ω) (typ) 100
ICC @5V (µA) (max) 1.5
Package/Pins TDFN/8
UMAX/8
Budgetary
Price (See Notes)
0.83

Key Features

  • Wiper Position Stored After One-Time Fuse Programming
  • User-Defined Power-On Reset Position
  • 35ppm/°C End-to-End Temperature Coefficient and 5ppm/°C Ratiometric Temperature Coefficient
  • 32 Tap Positions
  • Tiny 8-Pin QFN and µMAX Packages
  • Ultra-Low 1.5µA (max) Static Supply Current
  • 2.7V to 5.5V Single-Supply Operation
  • Wiper Position Programmed Through Simple 2-Wire Serial Interface
  • 10kΩ, 50kΩ, and 100kΩ End-to-End Resistances
  • EV Kit Available
  • Applications/Uses

    • Mechanical Potentiometer Replacements
    • Products Using One-Time Factory Calibration

    Description

    The MAX5427/MAX5428/MAX5429 linear-taper digital potentiometers function as mechanical potentiometers, but replace the mechanics with a simple 2-wire digital interface. These digital potentiometers are unique in that they have an optional one-time programmable feature that either sets the wiper's power-on reset (POR) position to a user-defined value, or the wiper can be set and the interface disabled to prevent further adjustment.

    The MAX5427 has an end-to-end resistance of 100kΩ, the MAX5428 a resistance of 50kΩ, and the MAX5429 a resistance of 10kΩ. All these devices have 32 wiper positions, operate from a single 2.7V to 5.5V supply, and use less than 1.5µA (max) static supply current.

    The MAX5427/MAX5428/MAX5429 are available in 8-pin thin QFN and µMAX® packages. Each device is guaranteed over the extended temperature range of -40°C to +85°C.

    Simplified Block Diagram

    MAX5427, MAX5428, MAX5429: Functional Block Diagram MAX5427, MAX5428, MAX5429: Functional Block Diagram Zoom icon

    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 .