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CAT5191TBE-50GT3 +BOM

Digital Potentiometer (POT), 256-Tap, I2C Compatible, Extended Temperature Range

Manufacturer:

onsemi
Mfr.Part #:

CAT5191TBE-50GT3
Datasheet:

CAT5191TBE-50GT3 Datasheet (PDF)
Series:

CAT5191
Programmabe:

Not Verified
Taper:

Linear
Configuration:

Potentiometer
EDA/CAD Models:

Request Free CAD Models for CAT5191TBE-50GT3

CAT5191TBE-50GT3 General Description

The CAT5191 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 CAT5191 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 CAT5191 ideal for battery-powered portable applications.

The CAT5191 is designed as a pin for pin replacement for the AD5245 and operates over the -40°C to +85°C industrial temperature range.

Key Features

256-position
End-to-End Resistance: 50 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, I_DD 2 µA max
Extended Operating Temperature -40°C to +125°C

Application

Potentiometer Replacement
Transducer Adjustment of Pressure, Temperature, Position, Chemical, and Optical Sensors
RF Amplifier Biasing
Gain Control and Offset Adjustment

Specifications

Series	CAT5191	Programmabe	Not Verified
Taper	Linear	Configuration	Potentiometer
Number of Circuits	1	Number of Taps	256
Resistance (Ohms)	50k	Interface	I²C
Memory Type	Volatile	Voltage - Supply	2.7V ~ 5.5V
Features	Selectable Address	Tolerance	±20%
Temperature Coefficient (Typ)	100ppm/°C	Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 125°C	Resistance - Wiper (Ohms) (Typ)	100