AD5259:  Nonvolatile, I2C Compatible 256-Position, Digital Potentiometer

The AD5259 provides a compact, nonvolatile LFCSP-10 (3 mm x 3 mm) or MSOP-10 (3 mm x 4.9 mm) packaged solution for 256-position adjustment applications. These devices perform the same electronic ...More

AD5259:  Nonvolatile, I2C Compatible 256-Position, Digital Potentiometer

Product Description

The AD5259 provides a compact, nonvolatile LFCSP-10 (3 mm x 3 mm) or MSOP-10 (3 mm x 4.9 mm) packaged solution for 256-position adjustment applications. These devices perform the same electronic adjustment function as mechanical potentiometers1 or variable resistors, but with enhanced resolution and solid-state reliability.

The wiper settings are controllable through an I2C-compatible digital interface that is also used to read back the wiper register and EEPROM content. Resistor tolerance is also stored within EEPROM, providing an end-to-end tolerance accuracy of 0.1%.

A separate VLOGIC pin delivers increased interface flexibility. For users who need multiple parts on one bus, Address Bit AD0 and Address Bit AD1 allow up to four devices on the same bus

Applications

  • LCD panel VCOM adjustment
  • LCD panel brightness and contrast control
  • Mechanical potentiometer replacement in new designs
  • Programmable power supplies
  • RF amplifier biasing
  • Automotive electronics adjustment
  • Gain control and offset adjustment
  • Fiber to the home systems
  • Electronics level settings

    • Features

    • # Channels: 1
    • # Positions: 256
    • Memory Type: nonvolatile
    • Interface: I2C
    • Resistor Values (kOhm): 5, 10, 50, 100
    • Voltage Range (V): +5.5 V
    • Supply Current (µA): 3 µA
    • Temp. Range -40°C to +85°C
    • Absolute Tempco (ppm/°C): 300
    • VLOGIC Pin Provides Increased Interface flexibility

    Diagrams

    AD5259 Diagram
    Functional Block Diagram for AD5259

    Specifications

    # Channels 1
    # Positions 256
    Memory Type Non-Volatile
    Interface I2C
    Resistor Values (kOhms) 5, 10, 50, 100
    Bipolar Voltage Range (V) n/a
    Voltage Range (V) +5.5V
    Supply Current (max) 3µA
    Temp. Range -40 °C to.. 85Deg
    Absolute Tempco (ppm/°C) 300ppm/C
    Package MSOP

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