CAT521WI-T3

Digital Potentiometers Overview

The CAT521WI-T3 is a digital potentiometer IC from onsemi, housed in a 14-SOIC package. It features a single dual-channel configuration with 64 taps per channel and a resistance value of 24 kOhms. The device operates within a supply voltage range of 2.7 V to 5.5 V and draws a typical operating current of 1 mA. It utilizes an I2C digital interface for control and includes non-volatile memory to retain wiper settings. The component supports a linear taper and has a temperature coefficient of 300 PPM/°C.

Digital Potentiometers Feature Summary

• Integrates non-volatile memory to maintain wiper position data without power
• Provides dual independent digital potentiometer channels for versatile circuit adjustment
• Utilizes standard I2C serial interface for simplified system integration

Digital Potentiometers Applications

• Audio volume and tone control circuits
• Programmable gain amplifier biasing
• Sensor calibration and offset adjustment

Digital Potentiometers Procurement Notes

Verify the specific suffix T3 against the manufacturer's official documentation to ensure compatibility with required tape-and-reel packaging specifications. Confirm that the 14-SOIC footprint matches your PCB design constraints. Check for any updated lifecycle status or alternative recommendations directly from onsemi sources before finalizing procurement plans.

Digital Potentiometers Selection Notes

Select this component when a dual-channel digital solution with non-volatile storage is required. Ensure the 24 kOhm resistance value aligns with your circuit impedance requirements. Verify that the I2C addressability and voltage levels are compatible with your microcontroller or host system interface.

Digital Potentiometers Part Context

This part belongs to the CAT521 series of digital potentiometers designed for applications requiring precise, software-controlled resistance adjustment. The series offers various resistance values and package options, with the WI variant indicating industrial temperature range capabilities and SOIC packaging.

Digital Potentiometers Replacement Considerations

Consult onsemi datasheets for direct cross-reference models within the CAT521 family. Verify pinout and electrical parameter compatibility before substituting with other manufacturers' digital potentiometers.