CAT5221WI-00-T1

Digital Potentiometers Overview

The CAT5221WI-00-T1 is a dual digital potentiometer IC from onsemi, featuring two independent linear-taper potentiometers with 64 taps each. It integrates control logic and 16 bytes of non-volatile RAM (NVRAM) for persistent storage. The device operates via an I2C serial interface within a supply voltage range of 2.5 V to 6.0 V. Each potentiometer offers an end-to-end resistance of 100 kΩ with a tolerance of ±20%. Key electrical characteristics include a standby current of less than 1 µA and a typical wiper resistance of 80 Ω at 5 V. The component supports industrial temperature operation from -40°C to +85°C.

Digital Potentiometers Feature Summary

• Dual linear-taper digital potentiometers with 64 resistor taps per channel
• Integrated 16-byte NVRAM storing up to four wiper settings per potentiometer
• I2C serial interface supporting up to sixteen devices on a single bus
• Automatic recall of saved wiper settings upon power-up

Digital Potentiometers Applications

• Circuit level adjustments in electronic systems
• System level calibration requiring non-volatile memory retention
• Automated adjustments on high-volume production lines

Digital Potentiometers Procurement Notes

Verify the specific suffix 'W' confirms the SOIC-20 package and '00' indicates the 100 kΩ resistance value. Confirm the 'T1' shipping designation matches the required tape and reel quantity of 1000 units. Check for RoHS compliance status as the device is lead-free and halogen-free. Ensure the industrial temperature grade (-40°C to +85°C) meets the application requirements.

Digital Potentiometers Selection Notes

Select this model when a dual-channel configuration with 100 kΩ resistance is required. The 64-tap resolution provides approximately 1.6% step accuracy. Consider the I2C addressability if multiple devices are used on the same bus. Verify that the 1 mA operating current fits the system power budget compared to lower-power alternatives.

Digital Potentiometers Part Context

This component belongs to the CAT5221 family of dual digital potentiometers. Other variants in the series include different resistance values such as 2.5 kΩ, 10 kΩ, and 50 kΩ. Package options include both SOIC-20 and TSSOP-20 configurations. The family shares identical functional specifications regarding tap count, memory depth, and interface protocol.

Digital Potentiometers Replacement Considerations

Direct substitutes within the same family include CAT5221WI-10-T1 (10 kΩ), CAT5221WI-50-T1 (50 kΩ), and CAT5221WI-25-T1 (2.5 kΩ). For TSSOP-20 packages, consider CAT5221YI-00-T2. Ensure pin compatibility and software register mapping remain consistent across these variants.