MAX9721CEBC

Audio Amplifiers Overview

The MAX9721CEBC is a fixed-gain, stereo headphone amplifier manufactured by Analog Devices Inc./Maxim Integrated. It utilizes DirectDrive architecture to produce ground-referenced outputs from a single supply, eliminating the need for DC-blocking capacitors. The device operates from a single 0.9V to 1.8V supply and includes comprehensive click-and-pop suppression circuitry. It features ±8kV ESD protection on the headphone output and offers low-power shutdown mode. The component is housed in a tiny 12-bump chip-scale package (UCSP) or a 12-pin thin QFN package.

Audio Amplifiers Feature Summary

• DirectDrive architecture generates ground-referenced outputs from a single supply without external DC-blocking capacitors
• Integrated click-and-pop circuitry suppresses audible artifacts during startup and shutdown
• High power-supply rejection ratio allows operation from noisy digital supplies without additional linear regulators
• Includes ±8kV electrostatic discharge protection on headphone output pins

Audio Amplifiers Applications

• Portable audio equipment with limited board space
• Single-cell battery-powered devices requiring direct battery connection
• Systems needing compact stereo headphone amplification

Audio Amplifiers Procurement Notes

Verify the specific suffix CEBC against official datasheets to confirm package type and gain configuration. Confirm availability status as Maxim products are now managed under Analog Devices channels. Ensure compatibility with existing PCB footprints for UCSP or QFN packages before procurement.

Audio Amplifiers Selection Notes

Select this component when board space is critical and external capacitors must be eliminated. Suitable for applications powered by single AA or AAA batteries due to low voltage operation. Consider the fixed gain variants if external feedback networks are undesirable. Verify thermal requirements for the chosen package option.

Audio Amplifiers Part Context

The MAX9721 belongs to the Maxim Integrated line of audio amplifiers, now part of Analog Devices following the 2021 acquisition. This series focuses on portable electronics where size and power efficiency are paramount. The DirectDrive technology distinguishes it from traditional capacitor-coupled amplifiers by simplifying the design and reducing component count.

Audio Amplifiers Replacement Considerations

Check Analog Devices official documentation for current equivalents. No specific substitute part numbers are confirmed in public sources.