MAX5487ETE+

Overview

The MAX5487ETE+ is a dual, linear-taper digital potentiometer featuring a nonvolatile EEPROM interface. It provides 256 tap positions with an end-to-end resistance of 10kΩ and a temperature coefficient of 35ppm/°C. Operating on a single +2.7V to +5.25V supply, it utilizes a 3-wire SPI-compatible serial interface for wiper control. The device maintains wiper positions upon power-up or via interface commands, ensuring data retention for 50 years with 200,000 store cycles.

Feature Summary

• Dual-channel architecture with 256 programmable tap positions
• Nonvolatile memory (EEPROM) retains wiper settings across power cycles
• SPI-compatible 3-wire serial interface for digital control
• Low power consumption with 1µA standby current

Applications

• LCD screen adjustment and bias control
• Audio volume control circuits
• Mechanical potentiometer replacement in embedded systems
• Low-drift programmable filters
• Programmable-gain amplifier configurations

Procurement Notes

Verify the specific package type required for the design, as the MAX5487 series is available in both 16-pin TQFN-EP and 14-pin TSSOP formats. Confirm that the 10kΩ resistance value aligns with the circuit requirements, distinguishing this model from the 50kΩ and 100kΩ variants within the same family. Ensure compatibility with the 2.7V to 5.25V operating voltage range.

Selection Notes

Select the MAX5487ETE+ when a 10kΩ end-to-end resistance is necessary for the application. This component is suitable for designs requiring precise digital adjustment of analog signals without mechanical wear. Consider the ±1 LSB INL specification for applications demanding high linearity in voltage-divider mode. Verify that the system can accommodate the 3-wire SPI communication protocol.

Part Context

This component belongs to the MAX5487/MAX5488/MAX5489 family of dual, nonvolatile digital potentiometers. While the MAX5487 offers 10kΩ resistance, the MAX5488 and MAX5489 provide 50kΩ and 100kΩ options respectively. All variants share identical pinouts, interfaces, and nonvolatile memory features, differing primarily in their resistive element values.

Replacement Considerations

Direct replacements include other MAX5487 variants such as the MAX5487EUD+ (TSSOP package). Cross-family substitution requires verifying resistance tolerance, interface compatibility, and package dimensions.