CAT5171TBI-00GT3

Digital Potentiometers Overview

The CAT5171TBI-00GT3 is a single-channel digital potentiometer from onsemi featuring 256 adjustable taps and a linear taper. It utilizes an I2C-compatible interface for wiper control and operates within a supply voltage range of 2.7 V to 5.5 V. The device offers low power consumption with a maximum quiescent current of 2 µA and maintains stability across a temperature range of -40°C to +85°C. Packaged in an SOT-23-8 surface-mount format, it includes a power-on preset to midscale position and supports multiple devices on the same bus via an address pin.

Digital Potentiometers Feature Summary

• 256-position linear taper digital potentiometer
• I2C compatible serial interface with address input pin
• Power-on preset to midscale (code 0x80)
• Low power operation with 2 µA max IDD

Digital Potentiometers Applications

• Potentiometer replacement in circuit designs
• Sensor calibration for pressure, temperature, and optical sensors
• RF amplifier biasing adjustment
• Gain control and offset adjustment

Digital Potentiometers Part Context

This component belongs to the CAT5171 series of 256-position I2C compatible digital potentiometers. The 'TBI' suffix indicates the specific resistance value and package configuration, while '00' typically denotes the 100 kΩ end-to-end resistance variant within this family. It serves as a direct electronic replacement for mechanical variable resistors in space-constrained applications.

Digital Potentiometers Replacement Considerations

When replacing mechanical potentiometers, verify that the application does not require non-volatile memory retention, as this device uses volatile wiper settings. Ensure the I2C bus speed (Standard 100 kHz or Fast 400 kHz) matches the controller capabilities. Check if the 100 kΩ resistance value aligns with the target circuit's impedance requirements.