MAX5392MAUE+

Overview

The MAX5392MAUE+ is a dual, volatile, low-voltage digital potentiometer with 256-tap linear taper positions. It features an end-to-end resistance of 50kΩ and operates from a single +1.7V to +5.5V supply. The device includes an I²C-compatible interface and maintains a low quiescent supply current of 12µA. It guarantees a maximum wiper resistance below 200Ω via an internal charge pump down to 1.7V. The component is specified over the automotive temperature range of -40°C to +125°C and is housed in a 16-pin TSSOP package.

Feature Summary

• Dual independent 256-tap linear taper potentiometers
• I²C serial interface with up to eight addressable devices
• Internal charge pump ensures wiper resistance <200Ω at VDD = 1.7V
• Wipers initialize to midscale (80h) upon power-up

Applications

• Mechanical potentiometer replacement
• Adjustable voltage references and linear regulators
• Offset and gain control in signal conditioning circuits
• Low-voltage battery-powered portable electronics

Procurement Notes

Verify the specific 'M' suffix for the 50kΩ end-to-end resistance variant. Confirm the 'U+' designation indicates a lead-free/RoHS-compliant package. Ensure the design accounts for the volatile nature of the memory, requiring state restoration after power loss.

Selection Notes

Select this model specifically for the 50kΩ resistance value; other variants offer 10kΩ or 100kΩ. Verify that the application supports volatile storage, as settings are lost when power is removed. Ensure the I²C bus pullup resistors are sized appropriately for the required clock frequency and bus capacitance limits.

Part Context

This component belongs to the MAX5392 family of dual digital potentiometers. The 'M' suffix distinguishes it from the MAX5392LAUE+ (10kΩ) and MAX5392NAUE+ (100kΩ). All variants share identical pinouts, electrical characteristics, and packaging, differing only in the total end-to-end resistance.

Replacement Considerations

Direct functional substitutes within the same package include MAX5392LAUE+ and MAX5392NAUE+, provided the circuit tolerates the different resistance values of 10kΩ or 100kΩ respectively.