MAX5456EEE+

Overview

The MAX5456EEE+ is a dual logarithmic taper digital potentiometer designed for stereo audio applications. It features a pushbutton interface with SmartWiper control, eliminating the need for microcomputer-based volume and balance adjustments. Each of the two potentiometers offers 32 tap positions with a nominal end-to-end resistance of 10kΩ and a temperature coefficient of 50ppm/°C. The device operates on a single supply voltage ranging from +2.7V to +5.5V or a dual ±2.7V supply. Key electrical characteristics include a typical total harmonic distortion plus noise (THD+N) of 0.01%, channel-to-channel isolation of -100dB, and an active supply current of 100µA.

Feature Summary

• SmartWiper Control: Accelerated wiper motion at 4Hz after 1s hold and 16Hz after 4s hold.
• Integrated Debounce: Internal debouncing circuitry with 50kΩ pullup resistors for SPST pushbuttons.
• Click/Pop Suppression: Minimizes audible noise during wiper transitions by synchronizing movement with signal zero-crossings.
• Mute Function: Forces wipers to maximum attenuation (-90dB typ) via the MUTE input.

Applications

• Stereo Volume Control
• Fading and Balancing Stereo Signals
• Stereo Blending and Mixing

Procurement Notes

Verify the package type is 16-pin QSOP and the operating temperature range is -40°C to +85°C. Confirm that the component is lead-free and RoHS-compliant as indicated by the '+' suffix in the part number MAX5456EEE+. Ensure the logic supply voltage matches the system requirements within the 2.7V to 5.5V range.

Selection Notes

Select the MAX5456EEE+ when a dedicated pushbutton interface is required for audio volume and balance control without microcontroller overhead. Choose this over SPI-controlled variants if hardware pin count needs to be minimized. Verify that the 10kΩ resistance value and logarithmic taper align with the specific audio attenuation curve requirements of the design.

Part Context

The MAX5456EEE+ belongs to the MAX5456/MAX5457 family of stereo audio taper potentiometers. It is functionally similar to the MAX5457 but differs in its control interface; the MAX5456 uses four independent buttons for volume up/down and left/right balance, whereas the MAX5457 uses three buttons with a mode toggle. Both share the same package and core electrical specifications.

Replacement Considerations

The MAX5457EEE+ is a direct functional substitute with a different control interface (MODE toggle vs. independent balance buttons). For SPI-based interfaces, consider the MAX5408–MAX5411 series. No other identical pushbutton-interface replacements are documented in the provided data.