MAX5409EEE+

Overview

The MAX5409EEE+ is a dual, logarithmic taper digital potentiometer featuring two wipers per resistor. It replaces mechanical components in audio applications requiring digitally controlled resistance. The device operates on a single supply voltage of +2.7V to +3.6V and utilizes an SPI-compatible serial interface for control. Each potentiometer offers a factory-set end-to-end resistance of 10kΩ with 32 tap positions. Key electrical characteristics include a nominal temperature coefficient of 35ppm/°C end-to-end and 5ppm/°C ratiometric. The component supports zero-crossing detection to minimize audible noise during transitions.

Feature Summary

• Dual potentiometers with two wipers per resistor (W0A/W0B and W1A/W1B)
• Logarithmic taper with 2dB steps between taps
• Zero-crossing detection for clickless switching
• Mute function providing -90dB attenuation

Applications

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

Procurement Notes

Verify the specific ordering suffix EEE against the manufacturer's current documentation to confirm package type and temperature range specifications. Ensure compatibility with the required logic supply voltage levels for the SPI interface before integration into the design.

Selection Notes

Select the MAX5409EEE+ when dual independent wiper control is required for each channel within a single package. This model is suitable for applications needing separate front and rear speaker level adjustments or complex fading networks compared to single-wiper variants.

Part Context

This component belongs to the MAX5408–MAX5411 family of dual, audio, log taper digital potentiometers. The MAX5409 variant specifically distinguishes itself by providing two wipers per potentiometer, whereas the MAX5408 provides only one. Both share the same QSOP-16 packaging and extended temperature rating.

Replacement Considerations

The MAX5411 serves as a direct functional substitute offering identical dual-wiper specifications but operates at a higher supply voltage range (+4.5V to +5.5V). Verify voltage compatibility when substituting.