ISL23348WFRZ-TK

Digital Potentiometers Overview

The ISL23348WFRZ-TK is a quad, 128-tap, low-voltage digitally controlled potentiometer (XDCP) manufactured by Intersil. It integrates four independent DCP cores, wiper switches, and control logic on a monolithic CMOS integrated circuit. The device operates with an SPI Bus interface and features volatile memory for tap position storage. It supports a wide operating temperature range from -40°C to +125°C and is available in QFN20 and TSSOP20 packages.

Digital Potentiometers Feature Summary

• Quad architecture with four independent 128-tap digitally controlled potentiometers
• SPI Bus interface for digital control of resistance values
• Low voltage operation with low noise and low power consumption characteristics
• Integrated wiper switches and control logic on a single CMOS chip

Digital Potentiometers Applications

• Industrial process control systems requiring precise analog signal adjustment
• Portable instrumentation utilizing low voltage power supplies
• Automotive electronics operating within extended temperature ranges
• Communication equipment needing digitally adjustable gain or bias levels

Digital Potentiometers Procurement Notes

Verify the specific suffix 'WFRZ-TK' against official Renesas/Intersil documentation to confirm package type and tape-and-reel configuration. Confirm RoHS compliance status as indicated in the component datasheet. Check for obsolescence notices, as earlier Intersil designs may have replacement recommendations.

Digital Potentiometers Selection Notes

Select this component when a quad-channel digital potentiometer with 128 taps is required. Ensure the system voltage aligns with the low-voltage specifications. Verify that the SPI interface compatibility matches the host controller. Consider the volatile nature of the memory if power loss retention is critical for the application design.

Digital Potentiometers Part Context

This part belongs to the ISL234xx series of XDCP devices. It shares architectural similarities with the ISL23448 but differs in channel count or specific electrical parameters. The manufacturer transitioned from Intersil to Renesas Electronics, which may affect long-term support and documentation availability.

Digital Potentiometers Replacement Considerations

Consult the official datasheet for recommended replacements. Similar parts in the family include the ISL23448. Verify pinout compatibility and electrical parameter equivalence before substituting.