MAX5392NAUE+

Overview

The MAX5392NAUE+ is a dual, 256-tap volatile digital potentiometer with linear taper characteristics. It provides three end-to-end resistance options: 10kΩ, 50kΩ, and 100kΩ. The device operates from a single +1.7V to +5.5V supply and features an I²C-compatible interface. Key electrical parameters include a low 35ppm/°C temperature coefficient, ±0.5 LSB INL/DNL in voltage divider mode, and a wiper settling time of 2200ns maximum for the 100kΩ variant. It includes an internal charge pump ensuring wiper resistance remains below 200Ω at minimum supply voltages.

Feature Summary

• Dual independent 256-tap linear taper digital potentiometers
• I²C serial interface supporting up to eight devices on one bus
• Internal charge pump maintains <200Ω wiper resistance down to 1.7V
• Wipers initialize to midscale (80h) upon power-up

Applications

• Low-voltage battery-powered portable electronics
• Mechanical potentiometer replacement in industrial systems
• Adjustable gain control for operational amplifiers
• Programmable filter frequency adjustment
• Offset and gain calibration circuits

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via official datasheets as packaging suffixes indicate lead-free specifications. Ensure proper handling procedures are followed during storage and assembly to maintain device reliability.

Selection Notes

Select the MAX5392NAUE+ variant specifically for 100kΩ end-to-end resistance requirements. Consider the 10µA quiescent current for battery-sensitive designs. Verify that the I²C address configuration (A0-A2 pins) allows unique addressing within the target system topology without bus conflicts.

Part Context

This component belongs to the MAX5392 family of low-voltage digital potentiometers manufactured by Maxim Integrated, now part of Analog Devices Inc. The NAUE+ designation specifies the 100kΩ resistance value, TSSOP-16 package, and lead-free/RoHS-compliant construction. It serves as a solid-state alternative to mechanical potentiometers in precision analog signal conditioning applications.

Replacement Considerations

Direct pin-compatible replacements within the same family include MAX5392LAUE+ (10kΩ) and MAX5392MAUE+ (50kΩ). Cross-family substitution requires verification of I²C protocol compatibility and physical package dimensions.