MAX5488EUD+

Overview

The MAX5488EUD+ is a dual, linear-taper digital potentiometer featuring nonvolatile memory (EEPROM) and a 3-wire SPI-compatible interface. It provides 256 tap positions with an end-to-end resistance of 50kΩ and a temperature coefficient of 35ppm/°C. Operating from a single +2.7V to +5.25V supply, it includes ±1 LSB INL and ±0.5 LSB DNL in voltage-divider mode. The device retains wiper positions upon power-up and supports standby current as low as 0.5µA.

Feature Summary

• Dual-channel architecture with 256 programmable tap positions
• Nonvolatile EEPROM storage for wiper position recall at power-up
• SPI-compatible 3-wire serial interface for control
• Low power consumption with 0.5µA typical standby current

Applications

• LCD screen adjustment and bias control
• Audio volume control circuits
• Mechanical potentiometer replacement
• Low-drift programmable filters
• Programmable-gain amplifiers

Procurement Notes

Verify the package type matches the required footprint, as this component is available in both TSSOP-14 and TQFN-16 variants. Confirm that the specific order suffix corresponds to the desired resistance value and packaging format. Ensure compatibility with the system's supply voltage range of 2.7V to 5.25V before procurement.

Selection Notes

Select the MAX5488EUD+ when a 50kΩ end-to-end resistance is required. Compare against the MAX5487EUD+ for 10kΩ or the MAX5489EUD+ for 100kΩ applications. Consider the TSSOP-14 package for through-hole or standard SMT assembly needs. Verify that the 3-wire SPI interface aligns with the host controller's communication capabilities.

Part Context

This component belongs to the MAX5487/MAX5488/MAX5489 family of dual, nonvolatile digital potentiometers. All members share identical pinouts, interfaces, and reliability specifications, differing only in their nominal end-to-end resistance values. The EUD+ suffix specifically denotes the lead-free, RoHS-compliant version housed in a 14-pin TSSOP package.

Replacement Considerations

Direct functional replacements within the same series include the MAX5487EUD+ (10kΩ) and MAX5489EUD+ (100kΩ). These parts maintain identical pin configurations and electrical characteristics aside from resistance tolerance. Cross-family substitution requires verification of interface compatibility and physical package dimensions.