AD5246:  128 Position I2C Compatible Programmable Resistor in SC70 Package

The AD5246 provides a compact 2 mm x 2.1 mm packaged solution for 128 position adjustment applications. This device performs the same electronic adjustment function as a variable resistor. The ...More

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AD5246:  128 Position I2C Compatible Programmable Resistor in SC70 Package

Product Description

The AD5246 provides a compact 2 mm x 2.1 mm packaged solution for 128 position adjustment applications. This device performs the same electronic adjustment function as a variable resistor. The low temperature coefficient makes this device ideal for high accuracy and stability variable resistance adjustments.

The wiper settings are controllable through the I2C compatible digital interface, which can also be used to read back the present wiper register control word. The resistance between the wiper and 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.

Features

  • 128 Position
  • End-to-End Resistance 5kΩ, 10kΩ , 50kΩ , 100kΩ
  • Ultra-Compact SC70-6 (2 mm x 2.1 mm) Package
  • I2C Compatible Interface
  • 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

AD5246 Diagram
Functional Block Diagram for AD5246

Specifications

# Channels 1
# Positions 128
Memory Type Volatile
Interface I2C
Resistor Values (kOhms) 5, 10, 50, 100
Voltage Range (V) +5.5V
Supply Current (max) 3µA
Temp. Range -40 °C to.. 125Deg
Absolute Tempco (ppm/°C) 35ppm/C
Package SC-70

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