MAX9722AEUE+T

Audio Amplifiers Overview

The MAX9722AEUE+T is a stereo headphone amplifier in a 16-pin TSSOP package. It operates from a single 2.4V to 5.5V supply and delivers 130mW per channel into a 32Ω load or 70mW into a 16Ω load. The device features DirectDrive architecture, eliminating the need for bulky DC-blocking capacitors by providing ground-referenced outputs. It includes adjustable gain via external resistors, differential inputs for noise cancellation, and integrated click-and-pop suppression. Key electrical parameters include 0.009% THD+N, 80dB PSRR at 217Hz, and a quiescent current of 5.5mA.

Audio Amplifiers Feature Summary

• DirectDrive architecture eliminates large DC-blocking output capacitors
• Differential inputs enhance noise immunity against RF interference
• Integrated click-and-pop suppression prevents audible transients
• Low-power shutdown mode reduces supply current to 0.1µA

Audio Amplifiers Applications

• Notebook and desktop PCs
• MP3 players and portable audio equipment
• Flat-panel monitors
• Cellular phones and smartphones

Audio Amplifiers Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing this component. Confirm that the 'MAX9722A' designation matches the requirement for externally adjustable gain rather than the fixed-gain MAX9722B variant. Ensure the TSSOP-16 package aligns with the target PCB footprint and thermal management requirements.

Audio Amplifiers Selection Notes

Select this component for designs requiring high power efficiency and minimal board space due to the elimination of external coupling capacitors. The adjustable gain configuration allows flexibility in interfacing with various CODECs. Consider the 16-pin TSSOP package for applications where surface-mount assembly is preferred over QFN footprints.

Audio Amplifiers Part Context

This part belongs to the MAX9722 family of stereo headphone amplifiers designed for portable electronics. It utilizes Maxim's proprietary DirectDrive technology to generate bipolar supplies internally from a single rail. The family includes variants like the MAX9722B with fixed internal gain, offering designers options based on their specific circuit topology and noise rejection needs.

Audio Amplifiers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.