MAX5450EUB+T

Overview

The MAX5450EUB+T is a dual digital potentiometer from Analog Devices/Maxim Integrated, housed in a 10-pin µMAX package. It functions as two independent 2-terminal variable resistors with 256 tap positions controlled via an up/down interface. Operating on a single supply of +2.7V to +5.5V, it draws ultra-low supply current of 0.1µA. The device features a power-on reset that sets the wiper to midscale (position 127) and ensures glitchless switching between resistor taps. It offers a 10kΩ resistance value with a low end-to-end temperature coefficient of 35ppm/°C.

Feature Summary

• Dual 2-terminal variable resistors with 256 tap positions
• Ultra-low supply current of 0.1µA at VDD = 2.7V
• Glitchless switching between resistor taps
• Power-on reset sets wiper to midscale position

Applications

• Mechanical potentiometer replacement
• Low-drift programmable-gain amplifiers
• Volume control circuits
• LCD screen adjustment
• Adjustable voltage references

Procurement Notes

Verify the component is the MAX5450 variant specifically, as the family includes 50kΩ and 100kΩ options. Confirm the EUB suffix corresponds to the 10-pin µMAX package with the 10kΩ resistance value. Check for RoHS compliance status indicated by the '+' suffix in ordering information.

Selection Notes

Select this part when a dual variable resistor configuration is required rather than a three-terminal potentiometer. Ensure the application operates within the +2.7V to +5.5V supply range. Consider the 10kΩ resistance value against circuit impedance requirements, noting that other variants like MAX5452 offer 50kΩ.

Part Context

This component belongs to the MAX5450–MAX5455 family of dual digital potentiometers. While similar devices like the MAX5451 use a 14-pin TSSOP package and function as 3-terminal potentiometers, the MAX5450 specifically integrates internal connections to operate as 2-terminal variable resistors in a compact 10-pin footprint.

Replacement Considerations

Direct replacements within the same family include the MAX5450EUB without the tape-and-reel suffix if tube packaging is preferred. For different resistance values, consider the MAX5452EUB+T (50kΩ) or MAX5454EUB+T (100kΩ), which share the same package and interface.