MAX5452EUB+T

Overview

The MAX5452EUB+T is a dual digital potentiometer IC from the MAX5450–MAX5455 family, manufactured by Analog Devices Inc./Maxim Integrated. It contains two independent 2-terminal variable resistors, each with 256 digitally controlled wiper taps. The device operates on a single supply voltage ranging from +2.7V to +5.5V and draws an ultra-low supply current of 0.1µA at VDD = 2.7V. It features a linear resistance value of 50kΩ with an end-to-end temperature coefficient of 35ppm/°C and a ratiometric temperature coefficient of 5ppm/°C. The unit utilizes an up/down interface for glitchless switching between resistor taps and includes a power-on reset function that sets the wiper to midscale (position 127) upon initialization.

Feature Summary

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

Applications

• Mechanical potentiometer replacement
• Low-drift programmable-gain amplifier (PGA)
• Volume control
• LCD screen adjustment
• Adjustable voltage references

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and ensure the package matches the specified 10-pin µMAX form factor. Check for any specific handling requirements related to electrostatic discharge during storage and assembly processes.

Selection Notes

Select this model when a dual variable resistor configuration is required rather than a three-terminal potentiometer. Ensure the application supports the 50kΩ resistance value and the +2.7V to +5.5V supply range. Verify that the system can accommodate the 10-pin µMAX package dimensions and the specific logic levels for the CS, INC, and U/D inputs.

Part Context

This component belongs to the MAX5450–MAX5455 series of dual digital potentiometers. While the MAX5451, MAX5453, and MAX5455 offer three-terminal potentiometer configurations, the MAX5452 specifically provides two-variable resistor functionality. All devices in the family share identical electrical characteristics regarding resolution, linearity, and operating temperature ranges.

Replacement Considerations

The MAX5450EUB+T and MAX5454EUB+T are functional substitutes within the same package but differ in resistance values (10kΩ and 100kΩ respectively). Other members of the MAX545x family require different pinouts due to their three-terminal potentiometer architecture.