ISL22346UFV20Z-TK

Digital Potentiometers Overview

The ISL22346UFV20Z-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 supports a supply voltage range of 2.7V to 5.5V and operates within a temperature range of -40°C to +125°C. Packaged in a 20-lead TSSOP, it provides linear resistance taper options including 10kΩ and 50kΩ total resistance values.

Digital Potentiometers Feature Summary

• Integrates four independent digitally controlled potentiometers with 128 taps each
• Non-volatile memory stores wiper positions for power-up recall
• I²C serial interface with three address pins supporting up to eight devices per bus
• Low shutdown current of 5µA maximum in shutdown mode

Digital Potentiometers Applications

• Control and parameter adjustment circuits
• Signal processing applications requiring variable resistance
• Industrial systems needing precise analog signal tuning via digital interface

Digital Potentiometers Procurement Notes

Verify the specific suffix 'TK' indicates tape-and-reel packaging when sourcing. Confirm the resistance value (10kΩ or 50kΩ) as the base model number covers both options. Ensure the 'U' prefix denotes the industrial temperature grade (-40°C to +125°C). Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Digital Potentiometers Selection Notes

Select this component when multiple independent variable resistors are required in a compact surface-mount package. The I²C interface simplifies control compared to SPI alternatives if bus lines are limited. Verify that the 128-tap resolution meets the application's precision requirements. Consider the 70Ω typical wiper resistance for voltage drop calculations in low-current paths.

Digital Potentiometers Part Context

This part belongs to the ISL22346 family of quad XDCPs. It shares functional similarities with the ISL22343 but differs in tap count and interface specifics. The 'WFV' package code corresponds to the TSSOP-20 form factor. The 'TK' suffix typically denotes reel packaging for automated assembly processes.

Digital Potentiometers Replacement Considerations

Direct substitutes include other ISL22346 variants with different packaging such as ISL22346WFRT20Z for TQFN packages. Check for equivalent parts from other manufacturers offering quad I²C DCPs with similar tap counts and non-volatile storage capabilities.