Dual 256‐position I2C Compatible Digital Potentiometers (POTs)

The CAT5271 and CAT5273 are dual 256-position digital programmable linear taper potentiometers ideally suited for replacing mechanical potentiometers and variable resistors.

The wiper settings are controlled through an I2C-compatible digital interface. Upon power-up, the wiper assumes a midscale position and may be repositioned anytime after the power is stable. The devices can be programmed to go to a shutdown state during operation.

The CAT5271 and CAT5273 operate from 2.7 V to 5.5 V, while consuming less than 2 A. This low operating current, combined with a small package footprint, makes them ideal for battery-powered portable applications.

Features

• Dual 256-position

• End-to-End Resistance: 50 kΩ, 100 kΩ

• I2C Compatible Interface*

• Power-on Preset to Midscale

• Single Supply 2.7 V to 5.5 V

• Low Temperature Coefficient 100 ppm/°C

• Low Power, IDD 2 μA max

• Wide Operating Temperature −40°C to +85°C

• MSOP−10 Package (3 mm x 4.9 mm)

• These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS Compliant

Typical Applications

• Potentiometer Replacement

• Transducer Adjustment of Pressure, Temperature, Position, Chemical, and Optical Sensors

• RF Amplifier Biasing

• Gain Control and Offset Adjustment