ISL22346UFRT20Z-TK

Digital Potentiometers Overview

The ISL22346UFRT20Z-TK is a quad digitally controlled potentiometer (XDCP) manufactured by Renesas Electronics. It integrates four independent potentiometers, each featuring 128 resistor taps and non-volatile memory for wiper position storage. The device operates on a single supply voltage ranging from 2.7V to 5.5V with a typical supply current of 3mA. It utilizes an I2C serial interface for control and supports up to eight devices per bus via address pins. The unit resistance is 10kΩ with a linear taper and a temperature coefficient of 50ppm/°C. Packaged in a 20-lead TSSOP or QFN format, it functions within a temperature range of -40°C to +125°C.

Digital Potentiometers Feature Summary

• Quad configuration with 128 taps per potentiometer
• Non-volatile memory retains wiper position after power loss
• I2C serial interface with three address pins for multi-device support
• Low power consumption with shutdown mode drawing max 5µA

Digital Potentiometers Applications

• Control and parameter adjustment circuits
• Signal processing applications requiring digital resistance tuning
• Industrial systems needing reliable analog signal conditioning

Digital Potentiometers Procurement Notes

Verify the specific package variant (TSSOP vs QFN) as suffixes may indicate form factor differences. Confirm RoHS compliance status through official datasheets. Check for lead time variations based on manufacturing lot availability. Ensure ESD handling protocols are followed during assembly due to CMOS construction.

Digital Potentiometers Selection Notes

Select this component when a quad-channel solution is required to save board space compared to dual-channel alternatives. Verify that the 10kΩ resistance value aligns with system impedance requirements. Consider the 128-tap resolution for precision needs; higher tap counts are available in other series members if finer adjustment is necessary.

Digital Potentiometers Part Context

This part belongs to the ISL22346 family of XDCP™ devices. It shares core architecture with variants like the ISL22346WFV20Z-TK but differs in packaging and potentially pinout compatibility. The 'U' and 'F' suffixes typically denote specific package types such as QFN or TSSOP, while 'TK' indicates tape and reel packaging.

Digital Potentiometers Replacement Considerations

Direct substitutes include other ISL22346 variants with matching electrical specifications. Verify package dimensions and pin assignments before swapping between TSSOP and QFN versions. Dual-channel equivalents like the ISL22326 require circuit redesign due to channel count differences.