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