MAX5419NETA+

Overview

The MAX5419NETA+ 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 format, it supports data rates up to 400kbps and functions within an extended temperature range of -40°C to +85°C.

Feature Summary

• Nonvolatile memory retains wiper position across power cycles
• I²C serial interface with four factory-preset address options
• 200kΩ nominal resistance with ±0.5 LSB INL/DNL accuracy
• Low standby current of 500nA typical

Applications

• Mechanical potentiometer replacement
• Low-drift programmable-gain amplifiers
• Liquid-crystal display contrast control

Procurement Notes

Verify the specific ordering suffix NETA+ corresponds to the required I²C slave address configuration (010110A) and lead-free RoHS compliance status before procurement. Confirm that the 200kΩ resistance value aligns with the target circuit impedance requirements.

Selection Notes

Select this component when a high-resistance digital potentiometer is required for precision applications. Ensure the system voltage remains within the 2.7V to 5.25V operational limit. Consider the 200kΩ end-to-end resistance and associated wiper settling time characteristics against lower resistance alternatives like the MAX5417 or MAX5418.

Part Context

This part belongs to the MAX541x family of 256-tap digital potentiometers manufactured by Maxim Integrated. It shares the same package, interface, and core architecture as the MAX5417 (50kΩ) and MAX5418 (100kΩ), differing primarily in its factory-set end-to-end resistance value of 200kΩ.

Replacement Considerations

Direct functional replacements include the MAX5417LETA+ and MAX5418LETA+, provided the circuit can accommodate their respective 50kΩ and 100kΩ resistance values. Verify that the substitute part's I²C address matches the existing board design.