CAT5221YI-10-T2

Digital Potentiometers Overview

The CAT5221YI-10-T2 is a dual-channel digital potentiometer IC manufactured by onsemi. It features two independent potentiometers, each with 64 taps and a resistance value of 100 kOhms. The device utilizes an I2C serial interface for control and incorporates non-volatile memory to retain wiper settings upon power loss. Operating within a supply voltage range of 2.5 V to 6 V, it exhibits a typical temperature coefficient of 300 PPM/C and a resistance tolerance of 20%. The component is housed in a TSSOP-20 surface-mount package and supports operation across a temperature range of -40°C to +85°C.

Digital Potentiometers Feature Summary

• Dual-channel configuration with 64-tap resolution per potentiometer
• Non-volatile memory retains wiper position after power cycle
• I2C serial interface allows selectable slave addresses
• Linear taper characteristic with 100 kOhm nominal resistance

Digital Potentiometers Applications

• Audio volume and tone control circuits
• Programmable gain amplifier adjustments
• Voltage reference trimming
• Instrumentation sensor calibration

Digital Potentiometers Procurement Notes

The CAT5221YI-10-T2 is listed as obsolete or end-of-life by the manufacturer. Availability is limited to existing stock from distributors. Verification of authenticity and storage history is critical due to the component's discontinued status. Buyers should confirm the specific tape-and-reel packaging details and ensure compliance with RoHS directives before procurement.

Digital Potentiometers Selection Notes

Select this component when a dual-channel digital solution with high resistance values (100 kOhm) is required. The non-volatile feature eliminates the need for initial calibration routines after power-up. Ensure the system operates within the 2.5 V to 6 V supply range and that the I2C bus speed is compatible with the device specifications. The TSSOP-20 package requires appropriate PCB footprint design for surface mount assembly.

Digital Potentiometers Part Context

This part belongs to the CAT5221 family of digital potentiometers from onsemi. Variants in this series differ primarily in resistance values (e.g., 10 kOhm, 50 kOhm, 100 kOhm) and package types (SOIC vs. TSSOP). The 'YI' suffix typically denotes the specific resistance and package combination, while 'T2' indicates the reel quantity or packaging variant. All variants share the same core architecture and I2C interface.

Digital Potentiometers Replacement Considerations

Direct pin-to-pin replacements include other CAT5221 variants with different resistance values if circuit tolerances allow. Cross-brand equivalents must be verified for I2C compatibility, voltage range, and non-volatile memory functionality. Due to the obsolete status, alternative sourcing should prioritize components with guaranteed supply chains.