MAX5481ETE+

Overview

The MAX5481ETE+ is a 10-bit, nonvolatile, linear-taper programmable voltage-divider manufactured by Analog Devices (Maxim Integrated). It provides 1024 tap positions with an end-to-end resistance of 10kΩ. The device operates on a single +2.7V to +5.25V supply or ±2.5V dual supplies, consuming 1µA maximum standby current. It features an internal EEPROM for power-on wiper recall and supports a pin-selectable 3-wire SPI-compatible serial interface or up/down digital interface. Packaged in a 16-pin TQFN-EP (3mm x 3mm) format, it is specified over the -40°C to +85°C temperature range.

Feature Summary

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

Applications

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

Procurement Notes

Verify the component origin as Analog Devices Inc./Maxim Integrated. Confirm the package type is 16-pin TQFN-EP and the suffix '+' indicates lead-free/RoHS compliance. Ensure the specific variant matches the voltage-divider configuration required for the design.

Selection Notes

Select the MAX5481ETE+ when a 10kΩ end-to-end resistance is required. Choose this part over the MAX5482 if the lower resistance value suits the application's current handling needs. Verify that the 10-bit resolution meets the precision requirements compared to lower-resolution alternatives.

Part Context

This component belongs to the MAX5481–MAX5484 family of 10-bit nonvolatile digital potentiometers. The MAX5481 specifically functions as a 3-terminal voltage-divider with 10kΩ resistance, distinguishing it from the MAX5482 (50kΩ divider), MAX5483 (10kΩ variable resistor), and MAX5484 (50kΩ variable resistor).

Replacement Considerations

Direct replacements within the same family include the MAX5481EUD+ (14-pin TSSOP package). Other variants like MAX5482 offer different resistance values but share similar electrical characteristics.