MAX5489ETE#WG16

Overview

The MAX5489ETE#WG16 is a dual, linear-taper digital potentiometer manufactured by Analog Devices Inc./Maxim Integrated. It features 256 tap positions for precise resistance adjustment and includes nonvolatile memory to retain the wiper setting during power-off conditions. The device operates with a supply voltage range of 2.7 V to 5.25 V and utilizes a 3-wire SPI-compatible serial interface for control. Packaged in a 16-TQFN (3x3 mm) surface-mount case, it supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Dual-channel configuration with 256 discrete tap positions per channel
• Nonvolatile memory retains wiper settings after power removal
• 3-wire SPI-compatible serial interface for data input
• Linear taper characteristic with 10 kΩ nominal resistance

Applications

• Programmable gain amplifiers requiring adjustable resistance ratios
• Voltage reference trimming in precision measurement systems
• Digital volume control circuits in audio equipment
• Adaptive biasing networks in sensor signal conditioning

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status and check for specific manufacturing date codes relevant to project timelines. Ensure proper ESD handling procedures are followed during storage and assembly due to the sensitive CMOS/BICMOS internal structure.

Selection Notes

Select this component when dual independent digital pots with persistent settings are required. Compare against MAX5487 and MAX5488 variants which share similar architectures but differ in resistance values or specific interface nuances. Ensure the 10 kΩ resistance value aligns with the target circuit impedance requirements and that the 256-step resolution meets the necessary adjustment granularity.

Part Context

This part belongs to the MAX5487/MAX5488/MAX5489 family of dual, nonvolatile digital potentiometers. These devices are designed to replace mechanical potentiometers in applications requiring programmable resistance. The 'ETE' suffix indicates the TQFN-16 package, while '#WG16' denotes specific tape-and-reel packaging or variant coding within the manufacturer's nomenclature system.

Replacement Considerations

Direct replacements include MAX5487ETE+ and MAX5488ETE+ from the same family, provided the resistance tolerance and exact pinout compatibility are verified. Cross-reference with other dual nonvolatile digital potentiometers if different resistance values or package types are acceptable.