ISL22319WFU8Z-TK

Digital Potentiometers Overview

The Intersil ISL22319WFU8Z-TK is a digitally controlled potentiometer (XDCP) featuring a single channel with 64 wiper tap points. It utilizes an I²C serial interface for control and includes 4 bytes of nonvolatile memory to retain settings across power cycles. The device operates within a supply voltage range of 2.7V to 5.5V and offers a resistance tolerance of ±20%. Designed for low-power applications, it supports linear taper configurations and is housed in an 8-lead TSSOP package.

Digital Potentiometers Feature Summary

• 64-tap resolution with linear taper configuration
• I²C serial interface for digital control
• Nonvolatile memory retains wiper position after power loss
• Low standby current consumption suitable for battery operation

Digital Potentiometers Applications

• Battery-powered portable devices
• LCD contrast control circuits
• Industrial parameter adjustment systems
• Replacement for mechanical potentiometers in space-constrained designs

Digital Potentiometers Procurement Notes

Verify the specific suffix 'TK' against official Intersil documentation to confirm tape-and-reel packaging specifications and any unique manufacturing lot codes. Ensure compatibility with standard I²C bus protocols used in the target system design.

Digital Potentiometers Selection Notes

Select this component when a solid-state solution is required to replace mechanical potentiometers in environments where physical adjustment is impractical. The 64-tap resolution provides sufficient granularity for most biasing and gain control applications without requiring complex external circuitry.

Digital Potentiometers Part Context

This part belongs to the ISL2231x family of XDCPs, which are designed to offer reliability and longevity superior to traditional mechanical components. The family integrates resistor arrays, wiper switches, and control logic on a single CMOS microcircuit, eliminating wear-related failures associated with moving parts.

Digital Potentiometers Replacement Considerations

Intersil datasheets suggest the ISL22316 as a recommended alternative for new designs. Verify pinout compatibility and memory architecture differences before substituting.