MAX5489EUD+

Overview

The MAX5489EUD+ is a dual, linear-taper digital potentiometer featuring a 3-wire SPI-compatible serial interface. It provides two independent resistor networks with an end-to-end resistance of 100kΩ and 256 programmable tap positions. The device incorporates nonvolatile EEPROM to retain wiper settings across power cycles. Operating on a single +2.7V to +5.25V supply, it offers low standby current and high reliability. The component is housed in a 14-pin TSSOP package and is rated for operation from -40°C to +85°C.

Feature Summary

• Dual-channel architecture with 100kΩ end-to-end resistance per channel
• Nonvolatile memory (EEPROM) retains wiper position upon power-up
• SPI-compatible 3-wire serial interface for control
• ±1 LSB INL and ±0.5 LSB DNL accuracy in voltage-divider mode

Applications

• LCD screen adjustment and bias control
• Audio volume control circuits
• Low-drift programmable filters
• Programmable-gain amplifier configurations

Procurement Notes

Verify the 'EUD+' suffix confirms the 14-pin TSSOP package and lead-free/RoHS compliance. Confirm the specific temperature range (-40°C to +85°C) matches system requirements. Ensure the 100kΩ resistance value aligns with circuit design constraints before ordering.

Selection Notes

Select this model over MAX5487 or MAX5488 when a 100kΩ resistance is required. Choose the EUD package variant if surface-mount TSSOP footprint compatibility is necessary compared to the TQFN option. Verify that the 256-tap resolution meets the precision needs of the application.

Part Context

This component belongs to the MAX5487/MAX5488/MAX5489 family of dual digital potentiometers. The MAX5489 specifically denotes the 100kΩ resistance variant within this series, sharing identical pinouts, interfaces, and features with the 10kΩ (MAX5487) and 50kΩ (MAX5488) counterparts.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.