MAX5481EUD+

Overview

The MAX5481EUD+ is a 10-bit, nonvolatile, linear-taper digital potentiometer in a 14-pin TSSOP package. It functions as a programmable voltage divider with 1024 tap positions and a nominal end-to-end resistance of 10kΩ. The device features an internal EEPROM for power-on wiper recall and supports a 3-wire SPI-compatible serial interface or a pin-selectable up/down digital interface. Operating on a single +2.7V to +5.25V supply or ±2.5V dual supplies, it draws a maximum standby current of 1µA. Key electrical parameters include a 35ppm/°C end-to-end temperature coefficient and a 5ppm/°C ratiometric temperature coefficient.

Feature Summary

• 10-bit resolution providing 1024 distinct tap positions
• Nonvolatile EEPROM memory retains wiper position during power loss
• Pin-selectable 3-wire SPI-compatible or Up/Down digital interface
• Low standby supply current of 1µA (max)

Applications

• Low-drift programmable gain amplifiers
• LCD contrast adjustment circuits
• Pressure sensor signal conditioning
• Mechanical potentiometer replacement

Procurement Notes

Verify the component matches the specific MAX5481 variant, which is configured as a 3-terminal voltage divider with 10kΩ resistance. Confirm the EUD suffix indicates the 14-pin TSSOP package and the '+' suffix denotes lead-free/RoHS compliance. Ensure the operating environment stays within the specified -40°C to +85°C temperature range.

Selection Notes

Select the MAX5481EUD+ when a 10kΩ voltage divider configuration is required. If variable resistor functionality is needed instead, consider the MAX5483 series. For higher resistance values, the MAX5482 offers a 50kΩ option. Verify that the system requires 10-bit resolution and nonvolatile storage capabilities before choosing this component over volatile alternatives.

Part Context

The MAX5481 is part of the MAX5481–MAX5484 family of 10-bit nonvolatile digital potentiometers manufactured by Analog Devices / Maxim Integrated. This family shares common architecture but differs in terminal configuration and resistance values. The MAX5481 specifically serves as the 10kΩ voltage divider model within this lineup.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.