AD5161:  256 Position SPI/I2C Selectable Digital Potentiometer

The AD5161 provides a compact 3 mm x 4.9 mm packaged solution for 256 position adjustment applications. This device performs the same electronic adjustment function as a mechanical potentiometer or ...More

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AD5161:  256 Position SPI/I2C Selectable Digital Potentiometer

Product Description

The AD5161 provides a compact 3 mm x 4.9 mm packaged solution for 256 position adjustment applications. This device performs the same electronic adjustment function as a mechanical potentiometer or 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 a pin selectable SPI or I2C compatible digital interface, which can also be used to read back the present wiper register control word.

Operating from a 2.7 to 5.5 volt power supply consuming less than 5µA allows for usage in portable battery operated applications.

Features

  • 256 Position
  • End-to-End Resistance
    5kΩ, 10kΩ , 50kΩ , 100kΩ
  • Compact uSOIC-10 (3 mm x 4.9 mm) Package
  • Pin Selectable I2C or SPI Compatible Interface
  • Extra Package Address Decode Pin A0
  • Full Read/Write of Wiper Register
  • Power ON Reset to Midscale
  • Single Supply +2.7 V to +5.5V
  • Low Temperature
    Coefficient 35 ppm/°C
  • Low power, IDD=5 µA
  • Wide Operating
    Temperature –40°C to +125°C

Diagrams

AD5161 Diagram
Functional Block Diagram for AD5161

Specifications

# Channels 1
# Positions 256
Memory Type Volatile
Interface I2C,SPI
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 MSOP

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