MAX5389NAUD+

Overview

The MAX5389NAUD+ is a dual, 256-tap, volatile, low-voltage linear taper digital potentiometer manufactured by Analog Devices Inc./Maxim Integrated. It features an end-to-end resistance of 100kΩ and operates from a single +2.6V to +5.5V power supply. The device provides a low 35ppm/°C temperature coefficient and draws less than 1μA of quiescent supply current. It utilizes an up/down interface for wiper control and is specified over the automotive -40°C to +125°C temperature range in a 14-pin TSSOP package.

Feature Summary

• Dual, 256-Tap Linear Taper Positions
• Single +2.6V to +5.5V Supply Operation
• Low (< 1μA) Quiescent Supply Current
• Up/Down Interface

Applications

• Audio Mixing
• Mechanical Potentiometer Replacement
• Low-Drift Programmable Filters and Amplifiers
• Adjustable Voltage References/Linear Regulators
• Programmable Delays and Time Constants

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific lot traceability requirements. Ensure storage conditions adhere to moisture sensitivity level guidelines prior to soldering.

Selection Notes

Select this model when a 100kΩ dual digital potentiometer with an up/down interface is required. Verify that the system voltage falls within the 2.6V to 5.5V range. Consider the volatile memory characteristic, which requires external state retention if power is lost.

Part Context

This component belongs to the MAX5389 series of dual digital potentiometers. Other variants in the series include the MAX5389LAUD+ (10kΩ) and MAX5389MAUD+ (50kΩ), sharing identical pinouts and interfaces but differing in end-to-end resistance values.

Replacement Considerations

Direct substitutes include MAX5389LAUD+ and MAX5389MAUD+. These share the same package and interface but offer different resistance values (10kΩ and 50kΩ respectively). Verify circuit compatibility regarding resistance ranges before substitution.