MAX5419PETA+T

Overview

The MAX5419PETA+T is a nonvolatile, linear-taper digital potentiometer featuring 256 tap points and an end-to-end resistance of 200kΩ. It utilizes a fast-mode I²C-compatible serial interface for communication at data rates up to 400kbps. The device incorporates internal EEPROM to store the wiper position, enabling power-on recall. Operating on a single supply voltage ranging from +2.7V to +5.25V, it exhibits a typical static supply current of 500nA. The component is housed in a compact 3mm x 3mm 8-pin TDFN package with an exposed pad and is specified for operation over an extended temperature range of -40°C to +85°C.

Feature Summary

• Nonvolatile memory retains wiper position across power cycles with 50-year data retention guarantee.
• I²C-compatible serial interface supports clock frequencies up to 400kHz.
• Low standby current consumption of typically 500nA.
• Linear taper with ±0.5 LSB INL and DNL in voltage-divider mode.

Applications

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

Procurement Notes

Verify the 'T' suffix indicates tape-and-reel packaging when sourcing this specific part number. Confirm the factory-set I²C address corresponds to the 'P' variant (010111 binary) required by the system design. Ensure the board layout accommodates the 8-TDFN-EP package dimensions and thermal requirements.

Selection Notes

Select the MAX5419PETA+T specifically for applications requiring a 200kΩ nominal resistance value. The 'P' suffix dictates a fixed slave address configuration; verify compatibility with existing bus addressing schemes. Consider the 200kΩ impedance level against drive capability requirements compared to lower resistance variants like the MAX5417 or MAX5418.

Part Context

This component belongs to the MAX541x family of 256-tap nonvolatile digital potentiometers manufactured by Analog Devices Inc./Maxim Integrated. The MAX5419 variant is distinguished by its 200kΩ end-to-end resistance, whereas the MAX5417 and MAX5418 offer 50kΩ and 100kΩ respectively. All variants share identical pinouts, interfaces, and nonvolatile memory architectures.

Replacement Considerations

Direct functional replacements within the same package include MAX5417PETA+T and MAX5418PETA+T, provided the circuit tolerates the different nominal resistances of 50kΩ and 100kΩ. Cross-family substitution requires verification of I²C protocol compatibility and physical footprint constraints.