MAX5411ETE+

Overview

The MAX5411ETE+ is a dual, logarithmic taper digital potentiometer featuring two wipers per resistor. It replaces mechanical potentiometers in audio applications requiring digitally controlled resistance. The device operates on a single +4.5V to +5.5V supply and utilizes an SPI-compatible serial interface for control. Each potentiometer offers 32 tap positions with 2dB steps between taps. Key features include zero-crossing detection to minimize audible noise during transitions, a mute function providing -90dB attenuation, and low standby current of 0.5µA. The component is housed in a 16-pin Thin QFN package.

Feature Summary

• Dual logarithmic taper digital potentiometers with 32 tap positions each
• Two wipers per potentiometer (W0A/W0B and W1A/W1B)
• Zero-crossing detection minimizes click/pop noise during switching
• SPI-compatible 3-wire serial interface with readback capability

Applications

• Stereo volume control
• Fading and balancing stereo signals
• Mechanical potentiometer replacement in audio circuits

Procurement Notes

Verify the specific ordering suffix 'ETE+' corresponds to the 16-pin Thin QFN package with lead-free construction. Confirm that the '+T' designation indicates reel packaging if required by assembly processes. Ensure compatibility with the +4.5V to +5.5V supply voltage range specified for the MAX5411 variant.

Selection Notes

Select the MAX5411ETE+ when dual-channel audio control with independent rear-fade capabilities is required. The dual-wiper configuration distinguishes it from the MAX5410, which has only one wiper per pot. Verify that the logarithmic taper aligns with human hearing perception for volume adjustments. Ensure the system supports the required SPI clock speeds and logic levels.

Part Context

This component belongs to the MAX5408–MAX5411 family of dual, audio, log taper digital potentiometers. The MAX5411 specifically denotes the variant with two wipers per resistor, whereas the MAX5410 has one wiper per resistor. All variants share the same 10kΩ fixed resistance value and logarithmic characteristics but differ in wiper count and supply voltage ranges.

Replacement Considerations

Direct functional replacements within the same family include the MAX5410ETE+ for single-wiper applications or the MAX5409ETE+ for dual-wiper configurations operating at lower voltages (+2.7V to +3.6V). Cross-family substitution requires verifying interface compatibility and wiper counts.