ISL22346WFRT20Z-TK

Digital Potentiometers Overview

The ISL22346WFRT20Z-TK is a quad digitally controlled potentiometer (XDCP) from Renesas Electronics, integrating four independent potentiometers with non-volatile memory on a single CMOS IC. It features an I2C serial interface for wiper position control and offers 128 resistor taps per channel. The device operates within a supply voltage range of 2.7V to 5.5V and supports a total resistance of 10kΩ with a linear taper. Key electrical parameters include a typical wiper resistance of 70Ω, a maximum shutdown current of 5µA, and a supply current of 5µA. It is housed in a 20-lead TQFN package (4x4mm) and rated for industrial temperatures from -40°C to +125°C.

Digital Potentiometers Feature Summary

• Integrates four 10kΩ potentiometers with 128 taps each and non-volatile wiper storage
• I2C serial interface with three address pins allowing up to eight devices on one bus
• Low power consumption with 5µA max shutdown current and 5µA operating supply current
• High reliability endurance of 1,000,000 data changes per bit per register

Digital Potentiometers Applications

• Control and parameter adjustment circuits
• Signal processing applications requiring variable resistance
• Battery-powered systems due to low power characteristics
• Industrial instrumentation requiring precise digital tuning

Digital Potentiometers Procurement Notes

Verify the specific suffix 'TK' indicates tape-and-reel packaging when ordering. Confirm the 20-TQFN (4x4mm) package footprint matches the design layout. Ensure the I2C address configuration aligns with system requirements, as up to eight devices can share the bus using the three hardware address pins.

Digital Potentiometers Selection Notes

Select this component for applications requiring multiple independent digital potentiometers in a compact surface-mount package. The 10kΩ resistance value and 128-tap resolution are suitable for general-purpose analog control. Verify that the I2C interface speed and voltage levels (2.7V–5.5V) are compatible with the host microcontroller or processor.

Digital Potentiometers Part Context

This part belongs to the ISL22346 family of quad XDCPs. It shares core functionality with variants like ISL22346WFV20Z but differs in package type; the WFRT variant uses a 20-TQFN package, whereas the WFV variant uses a 20-TSSOP. Both offer identical electrical specifications and non-volatile memory features.

Digital Potentiometers Replacement Considerations

ISL22346WFV20Z-TK is a pin-compatible alternative with the same electrical specifications but utilizes a 20-TSSOP package instead of TQFN. Ensure mechanical clearance and PCB land pattern match the selected package variant.