MAX5419NETA

Overview

The MAX5419NETA is a single-channel, nonvolatile digital potentiometer manufactured by Analog Devices (Maxim Integrated). It features a 100 kΩ end-to-end resistance with a linear taper and 256 tap positions. The device operates on a single supply voltage ranging from +2.7 V to +5.25 V and draws a typical static supply current of 500 nA. It utilizes an I²C-compatible serial interface for communication. Key electrical characteristics include a ±0.5 LSB differential nonlinearity (DNL) and integral nonlinearity (INL) in voltage-divider mode, along with a 35 ppm/°C temperature coefficient for end-to-end resistance.

Feature Summary

• Nonvolatile memory retains wiper position upon power loss
• I²C-compatible serial interface for digital control
• 256 discrete tap positions for precise resistance adjustment
• Low power consumption with 500 nA typical static current

Applications

• Programmable gain amplifiers
• Voltage reference trimming
• Sensor biasing and calibration
• Audio volume control systems

Procurement Notes

Verify the specific suffix 'NETA' against the manufacturer's official datasheet to confirm package type (TDFN-8) and commercial grade temperature range (-40°C to +85°C). Ensure I²C address pins are configured correctly to avoid bus conflicts when multiple devices are present.

Selection Notes

Select this component when a 100 kΩ resistance value is required with nonvolatile storage capabilities. Compare DNL/INL specifications against system accuracy requirements. Verify that the I²C clock speed and voltage levels are compatible with the host microcontroller logic.

Part Context

This part belongs to the MAX541x family of digital potentiometers, which includes variants with different resistance values such as the MAX5417 (10 kΩ) and MAX5418 (50 kΩ). All members share the same pinout, interface protocol, and nonvolatile memory architecture, differing primarily in total resistance and specific ordering suffixes.

Replacement Considerations

Direct functional substitutes within the same family include MAX5417NETA and MAX5418NETA, provided the resistance value difference is acceptable for the circuit design. Cross-family replacements require verification of interface compatibility and pin alignment.