ISL22326WFR16Z-TK

Digital Potentiometers Overview

The ISL22326WFR16Z-TK is a dual digitally controlled potentiometer (XDCP) IC from Renesas, integrating two independent potentiometers and non-volatile memory on a monolithic CMOS circuit. It features an I²C serial interface with three address pins, allowing up to eight devices per bus. The device offers 128 resistor taps and is available in 10kΩ or 50kΩ total resistance options. Operating on a single supply voltage of 2.7V to 5.5V, it includes non-volatile storage for wiper positions, ensuring data retention for 50 years at temperatures ≤ +55°C. The unit is housed in a 16-lead QFN package.

Digital Potentiometers Feature Summary

• Dual XDCP architecture with 128 taps per channel
• I²C serial interface supporting up to 8 devices/bus
• Non-volatile memory for wiper position storage
• Shutdown mode with maximum current of 5µA

Digital Potentiometers Applications

• Control systems requiring parameter adjustments
• Signal processing circuits
• Low noise analog signal attenuation

Digital Potentiometers Procurement Notes

Verify the specific suffix 'WFR16Z-TK' against official Renesas documentation to confirm the exact package type (QFN), tape and reel packaging status, and temperature grade. Ensure compatibility with the target I²C bus speed and voltage levels before procurement.

Digital Potentiometers Selection Notes

Select this component when dual independent digital potentiometers are required within a single package footprint. Verify that the 128-tap resolution meets the application's precision requirements and that the I²C interface aligns with the system controller capabilities. Check end-to-end resistance options (10kΩ or 50kΩ) against load impedance needs.

Digital Potentiometers Part Context

This part belongs to the ISL22326 series of low-power, low-noise digital potentiometers. It is designed for applications needing precise, software-adjustable resistance values without mechanical wear. The integration of non-volatile memory distinguishes it from volatile-only counterparts, maintaining settings across power cycles.

Digital Potentiometers Replacement Considerations

Direct replacements must match the dual-channel configuration, I²C interface, and 128-tap resolution. Verify pinout compatibility if substituting with other XDCP families. Cross-reference with ISL22326 variants differing only in package or suffix codes.