MAX4409EUD+T

Audio Amplifiers Overview

The MAX4409EUD+T is a stereo headphone amplifier utilizing DirectDrive architecture and common-mode sense inputs. It operates from a single 1.8V to 3.6V supply, delivering up to 80mW per channel into a 16Ω load with 0.002% THD+N. The device features a 5mA quiescent current, 86dB PSRR, and ±8kV ESD protection on outputs. It includes integrated click-and-pop suppression, low-power shutdown mode (6µA), and short-circuit/thermal overload protection. The component is housed in a 20-pin Thin QFN package.

Audio Amplifiers Feature Summary

• DirectDrive architecture eliminates bulky DC-blocking capacitors by generating ground-referenced outputs from a single supply.
• Common-mode voltage sensing input minimizes ground-loop noise when the headphone socket interfaces with other grounded equipment.
• Integrated comprehensive click-and-pop circuitry prevents audible transients during startup and shutdown sequences.
• Low-power shutdown mode significantly reduces supply current consumption for extended battery life.

Audio Amplifiers Applications

• Notebooks
• Desktop PCs
• Cellular Phones
• PDAs
• Portable Audio Equipment

Audio Amplifiers Procurement Notes

Verify the specific suffix against official documentation to confirm pinout and thermal pad configurations. Ensure compatibility with the required operating temperature range of -40°C to +85°C. Confirm that the 20-pin Thin QFN package dimensions align with the target PCB layout constraints. Validate that the supply voltage requirements match the system design specifications.

Audio Amplifiers Selection Notes

Select this component for designs requiring high-fidelity audio output without external coupling capacitors. Consider the 80mW per channel power capability relative to the connected headphone impedance. Evaluate the need for common-mode rejection in systems prone to ground loops. Assess the space-saving benefits of the Thin QFN package against thermal dissipation requirements.

Audio Amplifiers Part Context

This part belongs to the MAX4409 series of stereo headphone amplifiers. It is manufactured by Analog Devices Inc./Maxim Integrated. The series focuses on portable audio applications where board space and power efficiency are critical. The DirectDrive technology distinguishes it from conventional single-supply drivers that require large output capacitors.

Audio Amplifiers Replacement Considerations

Consult official manufacturer substitution guides for verified alternatives. Cross-reference pinouts and electrical characteristics carefully before implementation.