ISL22426UFV14Z

Digital Potentiometers Overview

The ISL22426UFV14Z is a dual digitally controlled potentiometer (XDCP) manufactured by Renesas Electronics. It integrates two independent potentiometers with non-volatile memory on a monolithic CMOS IC, housed in a 14-lead TSSOP package. The device features 128 resistor taps and operates via an SPI serial interface. It supports a supply voltage range of 2.7V to 5.5V and offers a total resistance option of 50kΩ. Key specifications include a typical wiper resistance of 70Ω at 3.3V, shutdown current of 5µA max, and EEPROM endurance of 1,000,000 cycles with 50-year data retention.

Digital Potentiometers Feature Summary

• Dual Digitally Controlled Potentiometers with 128 taps each
• SPI Serial Interface for control and status
• Non-volatile storage of wiper position with power-up recall
• Shutdown mode with maximum 5µA current consumption

Digital Potentiometers Applications

• Control and parameter adjustments
• Signal processing circuits
• Voltage divider applications

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix UFV14Z corresponds to the 50kΩ resistance option and 14-lead TSSOP package. Confirm the temperature range is -40°C to +125°C. Check for the -TK tape and reel suffix if required for automated assembly. Ensure RoHS compliance requirements are met as the product uses Pb-free material sets.

Digital Potentiometers Selection Notes

Select this component when dual isolated potentiometers are needed in a single package. The 50kΩ resistance value suits applications requiring higher impedance than the 10kΩ variant. Verify that the system utilizes an SPI master compatible with Mode 0 protocol. Consider the 14-lead TSSOP package dimensions against available PCB real estate compared to the 16-lead QFN alternative.

Digital Potentiometers Part Context

This part belongs to the ISL22426 series of low noise, low power XDCPs. It is functionally similar to the ISL22424 but differs in pinout and package options. The datasheet explicitly marks the ISL22426 as not recommended for new designs and recommends the ISL22424 as a replacement.

Digital Potentiometers Replacement Considerations

The datasheet identifies the ISL22424 as the recommended replacement part. Designers should consult the ISL22424 datasheet for updated specifications and availability, as the ISL22426 is marked as not recommended for new designs.