MAX5431BEUB

Overview

The MAX5431BEUB is a digitally programmable precision voltage divider manufactured by Analog Devices (Maxim Integrated). It operates within a supply voltage range of 2.7V to 15V and features an 8-pin TSSOP package. The device provides 64 tap points with a resolution of approximately 1.5% per step. Key electrical specifications include a maximum resistance tolerance of 0.025% and a temperature coefficient of 0.025 ppm/°C. It utilizes a standard 3-wire serial interface for control.

Feature Summary

• Digitally programmable voltage divider with 64 selectable tap points
• High precision: 0.025% initial tolerance and 0.025 ppm/°C temperature coefficient
• Wide single-supply operation from 2.7V to 15V
• Non-volatile memory retains settings during power-off

Applications

• Programmable gain amplifiers
• Precision reference voltage adjustment
• Sensor signal conditioning
• Calibration circuits requiring stable attenuation

Procurement Notes

Verify the specific suffix 'BEUB' against official Analog Devices documentation to confirm pinout, tape-and-reel packaging details, and industrial temperature grade availability. Ensure the source document explicitly lists this part number to avoid confusion with similar MAX5431 variants.

Selection Notes

Select the MAX5431BEUB when high stability and low drift are required in a compact surface-mount form factor. Compare the 0.025% tolerance against lower-cost alternatives if budget constraints allow for wider tolerances. Confirm that the 3-wire interface compatibility matches the host microcontroller's available SPI or similar serial ports.

Part Context

This component belongs to the MAX5431 family of non-volatile digital potentiometers and voltage dividers. It serves as a solid-state alternative to mechanical potentiometers, offering improved reliability and smaller footprint in precision analog signal processing applications.

Replacement Considerations

Check for direct cross-reference part numbers such as MAX5431AEUB or MAX5431CEUB depending on required tolerance grades. Verify pin-to-pin compatibility before substitution.