MAX5415EUD+

Overview

The MAX5415EUD+ is a dual, 256-tap, low-drift digital potentiometer housed in a 14-pin TSSOP package. It operates from a single +2.7V to +5.5V supply with an ultra-low 0.1µA supply current. Each device contains two independent 3-terminal potentiometers with a nominal end-to-end resistance of 100kΩ and a temperature coefficient of 35ppm/°C. The wiper position is digitally controlled via a 3-wire SPI-compatible interface, featuring glitchless switching and a power-on reset that sets the wiper to midscale.

Feature Summary

• Dual 3-terminal potentiometers with 256 tap positions
• Ultra-low 0.1µA supply current for battery-powered applications
• Glitchless switching between resistor taps
• Power-on reset (POR) sets wiper to midscale at power-up
• Low ratiometric temperature coefficient of 5ppm/°C

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status and check for specific ordering suffixes that may indicate tape-and-reel packaging versus tube quantities. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select the MAX5415EUD+ when a 100kΩ resistance value is required. Choose this model over the MAX5413 (10kΩ) or MAX5414 (50kΩ) based on circuit impedance requirements. Verify that the 3-wire serial interface aligns with the host microcontroller's available communication pins and logic voltage levels.

Part Context

This component belongs to the MAX5413/MAX5414/MAX5415 family of dual linear taper digital potentiometers. All variants share identical pinouts, control interfaces, and physical dimensions, differing only in their nominal end-to-end resistance values. The EUD+ designation indicates an industrial temperature range (-40°C to +85°C) and lead-free construction.

Replacement Considerations

Direct functional replacements within the same package include the MAX5413EUD+ and MAX5414EUD+. When substituting, account for differences in nominal resistance values and ensure the new part meets the specific linearity and drift requirements of the application.