MAX5498ETE+

Overview

The MAX5498ETE+ is a dual, nonvolatile, linear-taper digital potentiometer featuring one 2-terminal variable resistor and one 3-terminal programmable voltage-divider. It provides 10-bit (1024-tap) resolution with end-to-end resistance values of 10kΩ or 50kΩ. The device operates on a single supply from +2.7V to +5.25V or dual supplies of ±2.5V. It utilizes a 3-wire SPI-compatible serial interface for data rates up to 7MHz. Internal EEPROM stores wiper positions for initialization upon power-up, ensuring data retention for 50 years at +85°C.

Feature Summary

• Dual configuration: one 2-terminal variable resistor and one 3-terminal programmable voltage-divider
• 10-bit resolution with 1024 tap points and linear taper
• Nonvolatile memory retains wiper position after power loss
• Low standby current of 1.5µA maximum

Applications

• Gain and offset adjustment in signal conditioning circuits
• LCD contrast bias control
• Programmable-gain amplifiers requiring low drift
• Pressure sensor signal conditioning

Procurement Notes

Verify the specific suffix 'ETE+' corresponds to the 16-pin TQFN package and industrial temperature range (-40°C to +85°C). Confirm that the ordering information matches the manufacturer's current part numbering system, as suffixes may indicate packaging variations or compliance status without altering electrical function.

Selection Notes

Select the MAX5498ETE+ when a mixed configuration of a variable resistor and a voltage divider is required within a single package. Ensure the application does not draw significant current through the voltage-divider wiper, as this creates nonlinear voltage drops. Verify that the 10kΩ or 50kΩ end-to-end resistance options meet the circuit impedance requirements.

Part Context

This component belongs to the MAX5494–MAX5499 family of 10-bit, dual, nonvolatile digital potentiometers. While other members of the series offer different terminal configurations (e.g., two voltage dividers or two variable resistors), the MAX5498 specifically integrates one of each type. All devices in this family share the same pinout, interface, and nonvolatile memory architecture.

Replacement Considerations

The MAX5494ETE+, MAX5495ETE+, MAX5496ETE+, and MAX5497ETE+ are electrically compatible regarding interface and memory but differ in terminal configuration. The MAX5499ETE+ offers the same mixed configuration but with 50kΩ end-to-end resistance instead of 10kΩ.