MAX5419LETA+

Overview

The MAX5419LETA+ is a nonvolatile, linear-taper digital potentiometer featuring 256 tap positions and an I²C-compatible serial interface. It provides a nominal end-to-end resistance of 200kΩ with a temperature coefficient of 35ppm/°C. The device operates on a single supply voltage ranging from +2.7V to +5.25V and includes internal EEPROM for power-on recall of the wiper position. Packaged in a compact 3mm x 3mm 8-pin TDFN with an exposed pad, it supports extended operating temperatures from -40°C to +85°C.

Feature Summary

• Nonvolatile memory retains wiper position across power cycles
• I²C serial interface with four factory-set addresses plus A0 pin selection
• 200kΩ nominal resistance with ±0.5 LSB INL/DNL in voltage-divider mode
• Low standby current of 500nA typical

Applications

• Mechanical potentiometer replacement
• Low-drift programmable-gain amplifiers
• Liquid-crystal display (LCD) contrast control
• Volume control circuits

Procurement Notes

Verify the specific ordering suffix to confirm the factory-programmed I²C address combination. Ensure the design accommodates the 3mm x 3mm TDFN-EP package dimensions and thermal requirements for the exposed ground pad. Confirm RoHS compliance status matches project specifications.

Selection Notes

Select this component when a 200kΩ digital potentiometer is required. Compare against MAX5417 (50kΩ) and MAX5418 (100kΩ) if different resistance values are needed. Verify that the I²C bus address configuration allows for unique addressing if multiple devices share the same bus line.

Part Context

This part belongs to the MAX541x family of nonvolatile digital potentiometers. It shares identical electrical characteristics and pinouts with the MAX5417 and MAX5418, differing only in the nominal end-to-end resistance value. The 'LETA+' suffix indicates a lead-free, RoHS-compliant version in the TDFN-8 package with a specific factory-set I²C address.

Replacement Considerations

Direct functional replacements within the same family include MAX5417LETA+ and MAX5418LETA+, provided the resistance value difference is acceptable for the circuit design. Other series may require significant schematic changes due to interface or performance differences.