MAX5487EUD+T

Overview

The MAX5487EUD+T is a dual, linear-taper digital potentiometer featuring a 3-wire SPI-compatible serial interface. It provides 256 tap positions with an end-to-end resistance of 10kΩ and a temperature coefficient of 35ppm/°C. The device operates on a single +2.7V to +5.25V supply and includes nonvolatile EEPROM memory to retain wiper settings across power cycles. Packaged in a 14-pin TSSOP, it supports extended operating temperatures from -40°C to +85°C.

Feature Summary

• Dual-channel architecture with 256 programmable tap positions
• Nonvolatile EEPROM memory for data retention up to 50 years
• SPI-compatible 3-wire serial control interface (SCLK, DIN, CS)
• Low standby current of 1µA typical

Applications

• LCD screen contrast and bias adjustment
• Audio volume control circuits
• Mechanical potentiometer replacement
• Programmable low-drift filters
• Programmable-gain amplifier configurations

Procurement Notes

Verify the component designation against official manufacturer documentation to confirm specifications. Ensure that the ordering suffix corresponds to the required package type and environmental rating. Cross-reference technical parameters with the datasheet prior to integration into designs.

Selection Notes

Select this model when a dual-channel solution with nonvolatile storage is required. The 10kΩ resistance value suits moderate impedance applications. Verify that the system voltage falls within the 2.7V to 5.25V range and that the PCB layout accommodates the 14-pin TSSOP footprint.

Part Context

This component belongs to the MAX5487/MAX5488/MAX5489 family of digital potentiometers. While the MAX5487 specifies 10kΩ resistance, sibling models offer 50kΩ and 100kΩ options. All variants share identical pinouts, interfaces, and nonvolatile memory characteristics.

Replacement Considerations

Direct replacements include the MAX5488EUD+ (50kΩ) and MAX5489EUD+ (100kΩ). These parts maintain the same package and interface but differ in resistance values. Verify circuit compatibility regarding current limits and voltage drops before substitution.