CAT5171

The CAT5171 is a 256-position digitally programmable linear taper potentiometer ideally suited for replacing mechanical potentiometers and variable resistors.

CAT5171 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.

The CAT5171 operates from 2.7 V to 5.5 V, while consuming less than 2 µA. This low operating current, combined with a small package footprint, make the CAT5171 ideal for battery-powered portable applications.

The CAT5171, designed as a pin for pin replacement for the AD5243, is offered in the 8-lead SOT23 package and operates over the -40C to +85C industrial temperature range.