MAX5440EAG+

Audio Special Purpose Overview

The MAX5440EAG+ is a dual-channel, 40kΩ logarithmic taper digital potentiometer designed for stereo volume control applications. It features a debounced up/down interface compatible with rotary encoders, eliminating the need for microcontrollers. The device provides 32 log-spaced tap points per channel with buffered wiper outputs and an integrated bias generator that produces (VDD + VSS)/2, removing the requirement for external op-amps in unipolar audio circuits. It operates on a single +2.7V to +5.5V supply or dual ±2.7V supplies, includes click-and-pop suppression, and offers mute and balance modes via pushbutton inputs.

Audio Special Purpose Feature Summary

• Logarithmic taper volume control with 31 steps of 2dB attenuation
• Integrated bias voltage generator eliminates external op-amp requirements
• Low-power wiper buffers provide 0.003% THD+N
• Five-segment LED indicator for volume level or balance settings

Audio Special Purpose Applications

• Stereo Volume Control
• Desktop Speakers
• Multimedia Docking Stations
• Set-Top Boxes

Audio Special Purpose Procurement Notes

Verify the component is the lead-free/RoHS-compliant version indicated by the '+' suffix. Confirm the package is the 24-pin SSOP variant suitable for surface mount installation. Ensure the operating temperature range meets the -40°C to +85°C requirement for the specific application environment.

Audio Special Purpose Selection Notes

Select this component when a direct replacement for mechanical potentiometers is needed without microcontroller overhead. It is suitable for low-voltage audio systems requiring precise logarithmic attenuation. Verify that the logic supply voltage (VLOGIC) aligns with the system's digital interface levels between 2.7V and VDD.

Audio Special Purpose Part Context

The MAX5440EAG+ belongs to the Maxim Integrated MAX5440 series of stereo volume controls. It is specifically engineered to replace mechanical potentiometers in consumer audio equipment. The 'EAG+' designation identifies the extended temperature grade (-40°C to +85°C), SSOP package, and lead-free/RoHS compliance status.

Audio Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.