MAX5454EUB+

Overview

The MAX5454EUB+ is a dual digital potentiometer IC from the MAX5450–MAX5455 family, manufactured by Analog Devices (Maxim Integrated). It operates on a single +2.7V to +5.5V supply with an ultra-low supply current of 0.1µA. The device contains two independent 2-terminal variable resistors, each featuring 256 digitally controlled wiper positions and a nominal resistance of 100kΩ. It utilizes an up/down interface for glitchless switching between taps. Key electrical characteristics include a 35ppm/°C end-to-end temperature coefficient and a power-on reset that sets the wiper to midscale (position 127) upon initialization.

Feature Summary

• Dual 2-terminal variable resistor configuration with 256 tap positions
• Ultra-low supply current of 0.1µA at VDD = 2.7V
• Glitchless switching via up/down control interface
• Low 35ppm/°C end-to-end temperature coefficient

Applications

• Mechanical potentiometer replacement
• Low-drift programmable-gain amplifier (PGA)
• Adjustable linear regulators
• Impedance matching circuits

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status (+ suffix indicates lead-free packaging). Ensure the specific package variant matches design requirements, as this model uses the 10-pin µMAX package. Cross-reference datasheet revisions to confirm pinout consistency.

Selection Notes

Select the MAX5454EUB+ when a dual 2-terminal variable resistor configuration is required rather than a 3-terminal potentiometer. Choose this part over the MAX5455 series if the application involves fixed high-side connections internally tied to the wipers. Verify that the 100kΩ resistance value aligns with the target circuit impedance and voltage divider requirements.

Part Context

This component belongs to the MAX5450–MAX5455 family of dual digital potentiometers. While the MAX5451/MAX5453/MAX5455 offer 3-terminal potentiometer configurations, the MAX5454 specifically provides two 2-terminal variable resistors. All family members share identical control logic, low-power specifications, and package options, differing primarily in internal terminal connectivity.

Replacement Considerations

The MAX5452EUB+ serves as a functional substitute within the same family but offers a 50kΩ resistance value instead of 100kΩ. The MAX5455EUD+ provides similar functionality but utilizes a 14-pin TSSOP package and a 3-terminal potentiometer architecture rather than 2-terminal variable resistors.