AD5243:  256-Position Dual Channel I2C Compatible Digital Potentiometer

The AD5243 provides a compact 3 mm x 4.9 mm packaged solution for dual 256-position adjustment applications. This device performs the same electronic adjustment function as a 3-terminal mechanical ...More

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AD5243:  256-Position Dual Channel I2C Compatible Digital Potentiometer

Product Description

The AD5243 provides a compact 3 mm x 4.9 mm packaged solution for dual 256-position adjustment applications. This device performs the same electronic adjustment function as a 3-terminal mechanical potentiometer or variable resistor.

Available in four different end-to-end resistance values (2.5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ), these low temperature coefficient devices are ideal for high accuracy and stability variable resistance adjustments. The wiper settings are controllable through the I2C compatible digital interface.

The resistance between the wiper and either end point of the fixed resistor varies linearly with respect to the digital code transferred into the RDAC latch.

Operating from a 2.7 to 5.5 volt power supply and consuming less than 5 µA allows for usage in portable battery operated applications. All parts are guaranteed to operate over the extended automotive temperature range of -40°C to +125°C.

Features

  • 2-Channel, 256-Position
  • End-to-End Resistance 2.5 Ω,
    10 Ω, 50 Ω, 100 Ω
  • Compact MSOP-10
    (3 mm x 4.9 mm) Package
  • Full Read/Write of Wiper Register
  • Power-On Preset to Midscale
  • Single Supply +2.7 V to +5.5 V
  • Low Temperature
    Coefficient 35 ppm/°C
  • Low power, IDD=5 µA
  • Wide Operating Temperature
    –40°C to +125°C
  • Evaluation Board Available

Diagrams

AD5243 Diagram
Functional Block Diagram for AD5243

Specifications

# Channels 2
# Positions 256
Memory Type Volatile
Interface I2C
Resistor Values (kOhms) 2.5, 10, 50, 100
Voltage Range (V) +5.5V
Supply Current (max) 3.5µA
Temp. Range -40 °C to.. 125Deg
Absolute Tempco (ppm/°C) 35ppm/C
Package MSOP

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