MAX5417META+T

Overview

The MAX5417META+T is a nonvolatile, linear-taper digital potentiometer from the MAX541x family. It provides 256 tap positions with a nominal end-to-end resistance of 50kΩ. The device features an internal EEPROM for power-on recall of the wiper position and communicates via a fast I²C-compatible serial interface supporting data rates up to 400kbps. Operating on a single supply voltage ranging from +2.7V to +5.25V, it draws a typical static supply current of 500nA. The component is housed in a compact 3mm x 3mm 8-pin TDFN package and is specified for operation over an extended temperature range of -40°C to +85°C.

Feature Summary

• Nonvolatile Memory: Internal EEPROM stores wiper position for automatic recall upon power-up; guaranteed for 50 years at +85°C and 200,000 write cycles.
• I²C Interface: Fast-mode compatible 2-wire serial interface (SDA/SCL) allows communication at speeds up to 400kbps with multiple devices on the bus.
• Precision Resistance: Nominal 50kΩ end-to-end resistance with a low temperature coefficient of 35ppm/°C (end-to-end) and 5ppm/°C (ratiometric).
• Compact Packaging: Available in a tiny 3mm x 3mm 8-pin TDFN package with an exposed pad for thermal performance.

Applications

• Mechanical Potentiometer Replacement
• Low-Drift Programmable-Gain Amplifiers
• Volume Control
• Liquid-Crystal Display (LCD) Contrast Control

Procurement Notes

Verify the ordering suffix '+T' against the manufacturer's official documentation to confirm if it denotes tape-and-reel packaging or specific lot traceability requirements. Confirm that the 'M' address suffix corresponds to the required I²C slave address configuration for your system design. Ensure the procurement source provides genuine Analog Devices/Maxim Integrated products to guarantee electrical specifications and reliability.

Selection Notes

Select the MAX5417 variant specifically when a 50kΩ nominal resistance is required, as opposed to the 100kΩ (MAX5418) or 200kΩ (MAX5419) options. The 'M' suffix indicates a factory-preset I²C address code (010101xx), which must be verified against other devices on the bus to prevent address conflicts. Ensure the application voltage stays within the 2.7V to 5.25V range and that the PCB layout accommodates the 8-pin TDFN footprint with appropriate thermal grounding for the exposed pad.

Part Context

This component belongs to the MAX5417/MAX5418/MAX5419 series of 256-tap, nonvolatile, I²C-interface digital potentiometers. These devices replace mechanical potentiometers using a simple digital interface. The series shares identical pinouts, memory architectures, and interface protocols, differing primarily in nominal resistance values and factory-set I²C address codes defined by the ordering suffixes.

Replacement Considerations

Direct functional replacements include MAX5417LETA+, MAX5417NETA+, and MAX5417PETA+. These variants share the same 50kΩ resistance and package but differ in their factory-programmed I²C address codes. Verify that the alternative part's address code does not conflict with existing devices on the I²C bus before substitution.