MAX5388LAUB+

Overview

The MAX5388LAUB+ is a dual, 256-tap, volatile, low-voltage linear taper digital potentiometer manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +2.6V to +5.5V power supply with a quiescent current of less than 1µA. The device features an SPI-compatible interface and offers an end-to-end resistance of 10kΩ with a temperature coefficient of 35ppm/°C. It includes one voltage-divider configured potentiometer and one variable-resistor configured potentiometer in a 10-pin µMAX package.

Feature Summary

• Dual 256-Tap Linear Taper Digital Potentiometers
• SPI-Compatible 3-Wire Serial Interface
• Low Supply Current (< 1µA)
• Power-On Wiper Reset to Midscale

Applications

• Low-Voltage Battery Applications
• Portable Electronics
• Mechanical Potentiometer Replacement
• Offset and Gain Control
• Adjustable Voltage References/Linear Regulators

Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm lead-free status and package type. Confirm availability through authorized distributors as stock levels fluctuate. Ensure the component meets RoHS compliance requirements for the intended application environment.

Selection Notes

Select the MAX5388LAUB+ when a 10kΩ end-to-end resistance is required in a 10-pin µMAX package. Choose this model over the MAX5386 if one channel must operate as a variable resistor while the other functions as a voltage divider. Verify that the system voltage falls within the 2.6V to 5.5V operating range.

Part Context

This component belongs to the MAX5386/MAX5388 family of dual digital potentiometers. The 'L' suffix indicates a 10kΩ resistance value, while 'U' denotes the µMAX package. The 'A' typically signifies automotive or extended grade specifications, though the datasheet revision history notes the removal of specific automotive references in later revisions.

Replacement Considerations

The MAX5388MAUB+ (50kΩ) and MAX5388NAUB+ (100kΩ) are direct pin-compatible alternatives within the same package offering different resistance values. For applications requiring two voltage dividers, the MAX5386 series serves as a functional alternative.