MAX5434MEZT+T

Overview

The MAX5434MEZT+T is a nonvolatile, linear-taper digital potentiometer featuring a 6-pin thin SOT23 package. It provides 32 tap positions with a nominal end-to-end resistance of 50kΩ and operates on a single supply voltage ranging from +2.7V to +5.25V. The device utilizes a fast-mode I²C-compatible serial interface supporting data rates up to 400kbps. An internal EEPROM retains the wiper position upon power-up, ensuring nonvolatile memory functionality. Key electrical characteristics include a typical static supply current of 500nA, an end-to-end temperature coefficient of 35ppm/°C, and a ratiometric temperature coefficient of 5ppm/°C.

Feature Summary

• Nonvolatile EEPROM stores wiper position for recall at power-up
• Fast-mode I²C serial interface with 400kbps maximum clock rate
• 32 discrete tap points with 50kΩ nominal end-to-end resistance
• Low standby current consumption of 0.5µA typical

Applications

• Mechanical potentiometer replacement in space-constrained designs
• Low-drift programmable-gain amplifier circuit configurations
• Liquid-crystal display (LCD) screen adjustment and bias control

Procurement Notes

Verify the ordering suffix 'T' indicates tape-and-reel packaging configuration. Confirm the '+T' designation corresponds to lead-free material compliance as specified in the manufacturer's documentation. Ensure the specific factory-preset I²C address matches system bus requirements before integration.

Selection Notes

Select this component when a variable resistor configuration is required, as the high terminal is internally connected to the wiper. Choose the 50kΩ variant over the 100kΩ option if lower impedance levels are needed for specific gain settings. Verify that the 6-pin thin SOT23 package dimensions fit the available PCB footprint constraints.

Part Context

This part belongs to the MAX5432–MAX5435 family of 32-tap digital potentiometers. While the MAX5432/MAX5433 offer three-terminal voltage-divider operation in TDFN packages, the MAX5434/MAX5435 provide two-terminal variable resistor functionality in compact SOT23 packages. All variants share identical core digital interface and memory specifications.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation.