MAX4411BETP+T

Audio Amplifiers Overview

The MAX4411BETP+T is a fixed-gain, stereo headphone amplifier utilizing DirectDrive architecture. It operates from a single 1.8V to 3.6V supply and delivers up to 80mW per channel into a 16Ω load. The device features an internal gain of -2V/V, low quiescent current of 5mA, and integrated click-and-pop suppression. It includes independent left/right shutdown controls, ±8kV ESD protection, and thermal-overload protection.

Audio Amplifiers Feature Summary

• DirectDrive architecture eliminates bulky DC-blocking capacitors by generating an internal negative supply for ground-referenced outputs
• Fixed -2V/V gain configuration removes the need for external feedback networks
• Independent active-low shutdown controls optimize power consumption in mixed-mode applications

Audio Amplifiers Applications

• Notebook PCs
• Cellular Phones
• MP3 Players
• Smart Phones
• Portable Audio Equipment

Audio Amplifiers Procurement Notes

Verify the specific suffix ETP corresponds to the 20-pin Thin QFN package when sourcing. Confirm RoHS compliance status (+) and lead-free specifications against the manufacturer's latest documentation. Ensure the ordering code matches the required temperature range and gain variant (-2V/V).

Audio Amplifiers Selection Notes

Select this component for portable designs requiring high audio fidelity with minimal external components. The fixed -2V/V gain suits applications needing higher amplification than the standard -1.5V/V version. Verify that the 20-pin Thin QFN package fits the board layout constraints.

Audio Amplifiers Part Context

This part belongs to the MAX4411 family of stereo headphone drivers. It shares the core DirectDrive technology and protection features with other variants but differs in gain setting and package type. The MAX4411B specifically denotes the -2V/V gain option within the series.

Audio Amplifiers Replacement Considerations

MAX4411ETP (Gain -1.5V/V)

Audio Amplifiers FAQ

How does the DirectDrive architecture affect output biasing?

It uses a charge pump to create an internal negative supply, allowing outputs to be biased about ground without DC-blocking capacitors.

What is the function of the SHDN_ pins?

They provide independent active-low shutdown control for each channel to reduce supply current.