CAT5409YI00

Digital Potentiometers Overview

The CAT5409YI00 is a quad digital potentiometer IC featuring four independent linear taper resistors, each with 64 taps. It integrates control logic and 16 bytes of non-volatile memory (NVRAM) to store wiper settings. The device operates on an I2C serial interface with a supply voltage range of 2.5 V to 6.0 V. Key electrical parameters include a typical wiper resistance of 80 Ω at 5 V, ±20% resistance tolerance, and a temperature coefficient of ±300 ppm/°C. It supports industrial temperatures from -40°C to +85°C and offers write protection via the WP pin.

Digital Potentiometers Feature Summary

• Four independent digital potentiometers with 64 resistor taps each
• 16 bytes of non-volatile memory storing four wiper settings per pot
• I2C serial interface supporting up to 16 individually addressed devices
• Hardware write protection for data registers via dedicated WP pin

Digital Potentiometers Applications

• Circuit level adjustments requiring digital control
• System level calibration and configuration storage
• Variable resistor applications in signal conditioning

Digital Potentiometers Procurement Notes

Verify component authenticity through authorized channels as this part may be subject to obsolescence notices. Confirm package availability in TSSOP-24 format and ensure compatibility with existing PCB footprints. Check current manufacturing status against official discontinuation notifications prior to procurement planning.

Digital Potentiometers Selection Notes

Select the CAT5409YI00 variant specifically for 100 kΩ end-to-end resistance. Ensure the design accommodates the 24-lead TSSOP package dimensions. Verify that the system power supply remains within the 2.5 V to 6.0 V operating range and that I2C bus timing requirements are met for reliable communication.

Digital Potentiometers Part Context

This component belongs to the CAT5409 family of quad digital potentiometers. It shares functional similarities with other models in the series but is distinguished by its specific 100 kΩ resistance value and TSSOP-24 packaging. The 'Y' suffix denotes the TSSOP package type, while '00' indicates the 100 kΩ resistance option.

Digital Potentiometers Replacement Considerations

Direct replacements must match the quad digital potentiometer architecture, 64-tap resolution, I2C interface, and 100 kΩ resistance. Verify pinout compatibility between SOIC-24 and TSSOP-24 packages if substituting across package types. Ensure non-volatile memory features and write protection mechanisms align with application requirements.