CAT5221YI-00-T2

Digital Potentiometers Overview

The CAT5221YI-00-T2 is a dual digital potentiometer from onsemi, featuring two independent linear-taper pots with 64 taps each. It integrates I2C serial interface logic and non-volatile memory (NVRAM) to store up to four wiper settings per potentiometer. The device operates within a supply voltage range of 2.5 V to 6.0 V and supports industrial temperatures (-40°C to +85°C). Key electrical parameters include a 100 kΩ end-to-end resistance, ±20% tolerance, and typical standby current under 1 µA. It utilizes a 20-lead TSSOP package.

Digital Potentiometers Feature Summary

• Dual linear-taper digital potentiometers with 64 resistor taps each
• Non-volatile memory stores up to four wiper settings per pot for automatic recall at power-up
• I2C serial interface allows control and memory access with addressable slave addressing
• Industrial temperature range operation from -40°C to +85°C

Digital Potentiometers Applications

• Circuit level adjustments in electronic systems
• System level calibration requiring persistent settings
• Applications needing multiple stored resistance configurations via I2C

Digital Potentiometers Procurement Notes

Verify the ordering suffix 'T2' corresponds to the TSSOP-20 package and tape & reel shipping format as specified in the datasheet. Confirm the '00' resistance code indicates 100 kΩ. Ensure compatibility with the industrial temperature grade 'I'. Check for RoHS compliance status if required by specific manufacturing standards.

Digital Potentiometers Selection Notes

Select this component when a dual-channel digital potentiometer with non-volatile storage is required. The 100 kΩ resistance value suits applications needing higher impedance levels. The I2C interface minimizes pin count compared to parallel interfaces. Consider the 64-tap resolution for fine adjustment needs. Verify that the 2.5 V to 6 V supply range matches the system power rails.

Digital Potentiometers Part Context

This part belongs to the CAT5221 family of dual digital potentiometers. Variants differ by resistance value (2.5k, 10k, 50k, 100k), package type (SOIC or TSSOP), and shipping method (tube or reel). The Y suffix denotes the TSSOP package, while W denotes SOIC. The I suffix indicates the industrial temperature range.

Digital Potentiometers Replacement Considerations

Direct replacements must match the dual-pot architecture, 64-tap resolution, I2C interface, and non-volatile memory features. Other parts in the CAT5221 series with different resistance values or packages may be pin-compatible but require verification of electrical characteristics. Cross-model substitutes from other manufacturers are not listed in the provided documentation.