MAX5419NETA+T

Overview

The MAX5419NETA+T 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 35ppm/°C temperature coefficient. The device operates on a single supply voltage ranging from +2.7V to +5.25V and includes internal nonvolatile EEPROM for power-on wiper recall. Packaged in a compact 3mm x 3mm 8-pin TDFN format, it supports extended industrial operating temperatures from -40°C to +85°C.

Feature Summary

• 256 Tap Positions: Provides precise digital adjustment with ±0.5 LSB INL/DNL in voltage-divider mode.
• Nonvolatile Memory: Internal EEPROM retains wiper position for up to 50 years or 200,000 write cycles.
• I²C Interface: Fast-mode serial communication at data rates up to 400kbps with factory-preset addressing.
• Low Power Consumption: Typical standby current of 500nA and single-supply operation from +2.7V to +5.25V.

Applications

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

Procurement Notes

Verify the specific ordering suffix NETA+T corresponds to the required I²C address configuration (Address Code N). Confirm package type is 8-pin TDFN-EP and check RoHS compliance status as indicated by the plus sign. Ensure the selected part matches the 200kΩ resistance requirement for the target circuit design.

Selection Notes

Select this component when a 200kΩ variable resistance is needed with digital control. The MAX5419 variant is distinct from the MAX5417 (50kΩ) and MAX5418 (100kΩ). Consider the 35ppm/°C end-to-end temperature coefficient for drift specifications. Verify that the system bus supports the required I²C addressing scheme using the A0 pin.

Part Context

This part belongs to the MAX5417/MAX5418/MAX5419 family of nonvolatile digital potentiometers manufactured by Maxim Integrated (now Analog Devices Inc.). The 'NETA+' suffix indicates the specific I²C slave address code (N), lead-free/RoHS-compliant packaging, and the 200kΩ resistance value associated with the MAX5419 model number.

Replacement Considerations

Direct functional replacements within the same family include MAX5419LETA+, MAX5419META+, and MAX5419PETA+. These variants share identical electrical characteristics but differ in their factory-programmed I²C slave addresses determined by the second letter of the suffix (L, M, N, P).