MAX5417LETA+

Overview

The MAX5417LETA+ is a nonvolatile, linear-taper digital potentiometer featuring 256 tap positions and a nominal end-to-end resistance of 50kΩ. It utilizes a fast I²C-compatible serial interface for wiper control and includes internal EEPROM to store the wiper position for power-on recall. The device operates on a single supply voltage ranging from +2.7V to +5.25V with a typical standby current of 500nA. Key electrical characteristics include ±0.5 LSB DNL and INL in voltage-divider mode, a 35ppm/°C end-to-end temperature coefficient, and a 5ppm/°C ratiometric temperature coefficient. It is housed in an 8-pin TDFN package with an exposed pad.

Feature Summary

• Nonvolatile memory retains wiper position across power cycles
• I²C-compatible 2-wire serial interface supports up to 400kbps
• Single-supply operation from +2.7V to +5.25V
• Low standby current of 500nA (typical)

Applications

• Mechanical potentiometer replacement
• Low-drift programmable-gain amplifier circuits
• LCD contrast control

Procurement Notes

Verify the specific ordering suffix 'LETA+' corresponds to the required factory preset address code '010100' and the lead-free/RoHS-compliant status. Confirm that the 8-pin TDFN-EP package dimensions match the PCB land pattern requirements. Ensure the selected address allows for unique bus addressing if multiple devices are present.

Selection Notes

Select this component when a 50kΩ resistance value is required. Compare against MAX5418 (100kΩ) and MAX5419 (200kΩ) if different resistance ranges are needed. Verify that the I²C address configuration via the A0 pin meets system addressing constraints. Consider the 35ppm/°C temperature coefficient for precision applications.

Part Context

This part belongs to the MAX5417/MAX5418/MAX5419 family of 256-tap nonvolatile digital potentiometers. The MAX5417 variant specifically provides a 50kΩ end-to-end resistance. Other variants in the series offer 100kΩ and 200kΩ options while sharing identical interface protocols and package styles.

Replacement Considerations

Direct functional substitutes within the same family include MAX5418LETA+ (100kΩ) and MAX5419LETA+ (200kΩ), provided the resistance difference is acceptable. Different ordering suffixes such as META+, NETA+, or PETA+ offer alternative factory preset addresses but maintain identical electrical performance.