ISL23428UFVZ-T7A

Digital Potentiometers Overview

The ISL23428UFVZ-T7A is a quad, 128-tap low voltage digitally controlled potentiometer (XDCP) manufactured by Intersil. It integrates four independent digital potentiometers within a single package, each featuring 128 adjustable resistance taps. The device operates on a low supply voltage and utilizes an I2C-compatible serial interface for control. Key electrical parameters include a maximum supply voltage of 5.5 V and a typical wiper resistance of 70 ohms. The component supports non-volatile memory storage for wiper positions, ensuring data retention without power.

Digital Potentiometers Feature Summary

• Quad configuration with four independent 128-tap digital potentiometers
• I2C-compatible serial interface for address and data input
• Non-volatile memory retains wiper settings after power cycle
• Low voltage operation with supply range up to 5.5 V

Digital Potentiometers Applications

• Programmable gain amplifiers in signal conditioning circuits
• Digital volume control in audio equipment
• Voltage reference adjustment in precision measurement systems
• Bias current setting in analog front-end modules

Digital Potentiometers Procurement Notes

Verify the manufacturer status as Intersil has been acquired by Renesas Electronics. Confirm availability through authorized distributors or Renesas channels. Check for RoHS compliance documentation specific to the manufacturing date code. Ensure the T7A suffix indicates tape and reel packaging suitable for automated assembly processes.

Digital Potentiometers Selection Notes

Select this component when a quad channel digital potentiometer is required in a compact footprint. The 128-tap resolution offers fine adjustment granularity. Verify that the I2C interface matches the system controller capabilities. Consider the operating temperature range and supply voltage constraints of the target application against the device specifications.

Digital Potentiometers Part Context

This part belongs to the ISL234xx series of XDCPs, which are designed for applications requiring multiple programmable resistors in a small package. The UFVZ package denotes a thin plastic quad flat no-lead variant. The series provides a solution for replacing mechanical potentiometers in space-constrained designs.

Digital Potentiometers Replacement Considerations

Check for direct pin-to-pin replacements within the ISL234xx family, such as the ISL23418 for single-channel needs or ISL23448 for quad-channel variants with different tap counts. Verify compatibility with Renesas-branded equivalents if sourcing from updated inventory lists.