MAX5414EUD+

Overview

The MAX5414EUD+ is a dual linear taper digital potentiometer from Analog Devices/Maxim Integrated, housed in a 14-pin TSSOP package. It operates on a single supply voltage ranging from +2.7V to +5.5V with an ultra-low supply current of 0.1µA. Each device contains two independent 3-terminal potentiometers, providing 256 tap positions controlled via a 3-wire serial interface. The end-to-end resistance is nominally 50kΩ with a temperature coefficient of 35ppm/°C and a ratiometric coefficient of 5ppm/°C. Key features include glitchless switching between taps and a power-on reset that sets the wiper to midscale.

Feature Summary

• Dual 3-terminal potentiometers with 256 tap positions each
• Ultra-low 0.1µA supply current for low-power applications
• Glitchless switching between resistor taps
• Power-on reset (POR) sets wiper to midscale position at power-up
• 3-wire SPI-compatible serial interface for control

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm RoHS compliance status as indicated by the '+' suffix in the part number. Ensure the specific package type (TSSOP-14) matches the design requirements. Check for any lead-free manufacturing specifications if required by local regulations.

Selection Notes

Select the MAX5414EUD+ when a nominal 50kΩ resistance value is required. Compare against MAX5413EUD+ (10kΩ) and MAX5415EUD+ (100kΩ) based on circuit impedance needs. Consider the 35ppm/°C end-to-end temperature coefficient for stability requirements. Verify compatibility with the system's 3-wire serial interface timing constraints.

Part Context

This component belongs to the MAX5413/MAX5414/MAX5415 family of dual, 256-tap, low-drift digital potentiometers. All variants share identical pinouts, interfaces, and general electrical characteristics, differing primarily in their nominal end-to-end resistance values. The MAX5414 specifically provides the 50kΩ option within this series.

Replacement Considerations

Direct replacements within the same family include MAX5413EUD+ (10kΩ) and MAX5415EUD+ (100kΩ), provided the resistance value difference is acceptable for the application. Other digital potentiometers with similar interfaces and tap counts may be considered if resistance values can be adjusted accordingly.