256‐position I2C Compatible Digital Potentiometer (POT)

The CA5171 is a 256-position digital linear taper potentiometer 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 device can be programmed to reset the wiper position to midscale or to go to a shutdown state during operation. An address input pin, AD0, allows the connection of two devices onto the same I2C bus.

Features

• 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

• SOT−23 8-lead (2.9 mm × 3 mm) Package

• 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

CAT5171TBI-00GT3属于集成电路（IC） > 数字电位计。安森美半导体公司制造生产的CAT5171TBI-00GT3数字电位计数字电位器是一系列集成电路器件，可提供类似于传统机械电位器或变阻器的可调节电阻，但通过电子信号而非机械输入来进行控制。虽然这些器件的电阻可耗散的电能相对有限，但其电子控制能力有助于小型化、自动化和远程控制信号级模拟电路，而这些电路本来可能会使用机械电位器。