MAX5482EUD+

Overview

The MAX5482EUD+ is a 10-bit nonvolatile linear-taper digital potentiometer in a 14-pin TSSOP package. It functions as a programmable voltage divider with an end-to-end resistance of 50kΩ and ±25% tolerance. The device features 1024 tap positions, controlled via a pin-selectable 3-wire SPI-compatible serial interface or up/down digital interface. Operating from a single +2.7V to +5.25V supply or dual ±2.5V supplies, it includes internal EEPROM for power-on wiper recall. Key electrical parameters include a 35ppm/°C end-to-end temperature coefficient, 5ppm/°C ratiometric coefficient, and 1µA maximum standby current.

Feature Summary

• 10-bit resolution providing 1024 distinct tap positions
• Nonvolatile memory stores wiper position for initialization during power-up
• Pin-selectable 3-wire SPI-compatible serial interface or up/down digital interface
• Low standby current of 1µA (max) and data retention of 50 years at +85°C

Applications

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

Procurement Notes

Verify the component is the lead-free/RoHS-compliant version indicated by the '+' suffix. Confirm the package type is 14-pin TSSOP and the specific variant is the 50kΩ voltage-divider configuration. Ensure the operating environment stays within the specified -40°C to +85°C temperature range.

Selection Notes

Select the MAX5482EUD+ when a 50kΩ end-to-end resistance is required for voltage-divider applications. Choose this part over the MAX5481 if higher resistance is needed. Ensure the design supports either SPI or up/down control modes via the SPI/UD pin. Verify that the load on the wiper terminal remains high-impedance to maintain linearity specifications.

Part Context

This component belongs to the MAX5481–MAX5484 family of 10-bit nonvolatile digital potentiometers. The MAX5482 specifically denotes the 50kΩ variable resistor/voltage-divider variant. Other family members include the MAX5481 (10kΩ), MAX5483 (10kΩ variable resistor), and MAX5484 (50kΩ variable resistor). All share identical control interfaces and nonvolatile memory features.

Replacement Considerations

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