CAT5171 Series

Digital Potentiometer (POT), 256-Tap, I2C Compatible

Catalog

Digital Potentiometer (POT), 256-Tap, I2C Compatible

Part	Taper	Tolerance	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Number of Taps	Voltage - Supply [Min]	Voltage - Supply [Max]	Memory Type	Number of Circuits	Resistance (Ohms)	Resistance - Wiper (Ohms) (Typ)	Interface	Configuration	Temperature Coefficient (Typ)	Package / Case	Features
ON Semiconductor CAT5171TBI-00GT3	Linear	20 %	Surface Mount	85 °C	-40 °C	SOT-23-8	256	2.7 V	5.5 V	Volatile	1	100 kOhms	100 Ohms	I2C	Potentiometer	100 ppm/°C	SOT-23-8	Selectable Address
ON Semiconductor CAT5171TBI-50GT3	Linear	20 %	Surface Mount	85 °C	-40 °C	SOT-23-8	256	2.7 V	5.5 V	Volatile	1	50 kOhms	100 Ohms	I2C	Potentiometer	100 ppm/°C	SOT-23-8	Selectable Address

Catalog

Digital Potentiometer (POT), 256-Tap, I2C Compatible

Key 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, IDD2 µA max

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

Description

The CAT5171 is a 256-position linear taper digital POT 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.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, makes the CAT5171 ideal for battery-powered portable applications.The CAT5171 is designed as a pin for pin replacement for the AD5245 and operates over the -40°C to +85°C industrial temperature range.