ISL22444TFR20Z

Digital Potentiometers Overview

The ISL22444TFR20Z is a quad digitally controlled potentiometer (XDCP) featuring four independent channels, each with 256 resistor taps. It integrates non-volatile memory for wiper position retention and includes 11 general-purpose registers. The device utilizes an SPI serial interface for control and supports dual power supplies ranging from -5.5V to +5.5V. It operates within an extended industrial temperature range of -40°C to +125°C and is housed in a 20-lead QFN package.

Digital Potentiometers Feature Summary

• Quad configuration with 256 taps per channel
• Dual supply operation: VCC (+2.25V to +5.5V) and V- (-2.25V to -5.5V)
• Non-volatile EEPROM storage with 1 million cycle endurance
• SPI serial interface with daisy-chain capability

Digital Potentiometers Applications

• Control and parameter adjustments
• Signal processing applications
• Bipolar range DCP terminal control

Digital Potentiometers Procurement Notes

Verify component status as the datasheet indicates 'Not Recommended for New Designs'. Confirm availability through authorized distributors or secondary markets. Ensure compatibility with recommended replacement parts if sourcing for new production.

Digital Potentiometers Selection Notes

Select this part for applications requiring four independent digitally adjustable resistors with persistent settings. Verify that the required resistance value (10kΩ, 50kΩ, or 100kΩ) matches the specific suffix requirements. Ensure the system supports the SPI protocol and dual supply voltages if bipolar operation is needed.

Digital Potentiometers Part Context

This component belongs to the ISL22444 series of XDCPs. It is manufactured by Renesas Electronics Corporation (formerly Intersil). The 'T' suffix denotes the 100kΩ resistance option, and 'FRT20Z' indicates the 20-lead QFN package with RoHS compliance.

Digital Potentiometers Replacement Considerations

The datasheet explicitly recommends the ISL22424 as the replacement part.