MAX5484ETE+

Overview

The MAX5484ETE+ is a 10-bit, nonvolatile, linear-taper digital potentiometer functioning as a variable resistor. It features a 50kΩ end-to-end resistance with 1024 tap positions and an internal EEPROM for power-on wiper recall. The device supports a pin-selectable 3-wire SPI-compatible serial interface or an up/down digital interface, operating at data rates up to 7MHz. It operates on a single +2.7V to +5.25V supply or ±2.5V dual supplies, consuming 1µA maximum standby current. Packaged in a 16-pin TQFN (3mm x 3mm) with an exposed pad, it is specified over the -40°C to +85°C temperature range.

Feature Summary

• 10-bit resolution providing 1024 distinct tap positions
• Nonvolatile memory retains wiper position during power-off
• Pin-selectable 3-wire SPI or Up/Down digital control interface
• Low standby current of 1µA maximum

Applications

• Mechanical potentiometer replacement
• Programmable gain amplifiers
• LCD contrast adjustment
• Pressure sensor signal conditioning

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package integrity and lead condition upon receipt. Ensure static-safe handling procedures are followed due to CMOS construction. Cross-reference datasheet revisions to confirm electrical characteristics match design requirements.

Selection Notes

Select the MAX5484ETE+ specifically for variable resistor applications requiring 50kΩ resistance. Choose this model over voltage-divider variants when only two terminals (Wiper and Low) are utilized. Verify that the required interface mode aligns with the system's available control lines, as the SPI/UD pin determines operational mode.

Part Context

This component belongs to the MAX5481–MAX5484 family of 10-bit digital potentiometers. While sharing identical core architecture and nonvolatile memory specifications, the MAX5484 differs from siblings like the MAX5481 by offering 50kΩ resistance in a variable resistor configuration rather than a voltage divider.

Replacement Considerations

Direct functional replacements within the same family include the MAX5483 for 10kΩ variable resistor applications. For voltage divider configurations, the MAX5482 serves as the 50kΩ equivalent. Ensure pin compatibility and interface logic levels match when substituting.