CAT5221WI-00

Digital Potentiometers Overview

The CAT5221WI-00 is a dual-channel digital potentiometer IC from onsemi, featuring non-volatile memory to retain settings without power. It utilizes an I2C serial interface for control and offers 64 tap positions per channel with linear taper characteristics. The device operates within a supply voltage range of 2.5 V to 6 V and is housed in a 20-SOIC package. Key electrical parameters include a resistance value of 100 kOhms, a temperature coefficient of 300 PPM/C, and a tolerance of 20%. It supports operation temperatures from -40°C to +85°C.

Digital Potentiometers Feature Summary

• Dual-channel configuration with 64 taps per potentiometer
• Non-volatile memory retains wiper position after power loss
• I2C serial interface allows flexible address selection
• Linear taper characteristic with 100 kOhms nominal resistance

Digital Potentiometers Applications

• Automated gain control in signal processing circuits
• Voltage reference adjustment in measurement systems
• Calibration of sensor bias points in industrial equipment

Digital Potentiometers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required resistance value and package type. Check for moisture sensitivity level (MSL) handling requirements during storage and assembly. Ensure compatibility with existing I2C bus addressing schemes in the target design.

Digital Potentiometers Selection Notes

Select this model when dual independent digital potentiometers are required in a single package. Verify that the 100 kOhms resistance value aligns with circuit impedance requirements. Consider the 20% tolerance and 300 PPM/C temperature coefficient for precision applications. Ensure the I2C interface speed and address configuration fit the system constraints.

Digital Potentiometers Part Context

This component belongs to the CAT5221 series of digital potentiometers. The 'WI' suffix indicates a wide operating temperature range and SOIC package. The '00' typically denotes the resistance value code, specifically 100 kOhms in this context. The 'T1' suffix often refers to tape and reel packaging, though verification against the specific datasheet is recommended for exact packaging details.

Digital Potentiometers Replacement Considerations

Direct replacements must match the dual-channel, 64-tap, non-volatile, I2C-controlled specification. Verify pinout compatibility with the 20-SOIC package. Check if alternative part numbers from the same family offer different resistance values or package options while maintaining functional equivalence.