MAX9722BEUE+T

Audio Amplifiers Overview

The MAX9722BEUE+T is a stereo headphone amplifier from Analog Devices/Maxim Integrated, utilizing DirectDrive architecture to eliminate bulky DC-blocking capacitors. It operates on a single 2.4V to 5.5V supply and delivers up to 130mW per channel into a 32Ω load or 70mW into a 16Ω load. The device features a fixed internal gain of -2V/V, low 0.009% THD+N, and high PSRR (80dB at 217Hz). It includes integrated click-and-pop suppression, ±8kV ESD protection, short-circuit and thermal-overload protection, and a low-power shutdown mode reducing current to 0.1µA. The unit is housed in a 16-pin TSSOP package.

Audio Amplifiers Feature Summary

• DirectDrive architecture eliminates the need for large output DC-blocking capacitors by generating an internal negative supply via a charge pump.
• Fixed internal gain of -2V/V simplifies design by removing external resistor networks required for gain setting.
• Integrated comprehensive click-and-pop suppression circuitry prevents audible transients during power-up and shutdown sequences.
• Robust protection mechanisms include ±8kV ESD tolerance on outputs, thermal-overload shutdown, and continuous short-circuit protection.

Audio Amplifiers Applications

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

Audio Amplifiers Procurement Notes

Verify the specific suffix 'EUE+' corresponds to the 16-pin TSSOP package with lead-free RoHS compliance when sourcing. Confirm that the 'B' variant designation indicates the fixed -2V/V gain configuration rather than adjustable gain. Ensure the component matches the manufacturer's official datasheet specifications for electrical characteristics and operating temperature ranges before integration.

Audio Amplifiers Selection Notes

Select this component when board space constraints prohibit the use of large electrolytic coupling capacitors. The fixed -2V/V gain makes it suitable for applications where the driving source provides sufficient signal amplitude without requiring external feedback resistors. Consider the TSSOP package for through-hole or standard surface-mount assembly requirements compared to QFN options.

Audio Amplifiers Part Context

This part belongs to the MAX9722 family of stereo headphone amplifiers designed for portable electronics. The family includes variants like the MAX9722A with adjustable gain and other package options such as Thin QFN. The MAX9722 series is characterized by its ability to drive headphones directly from a single supply while maintaining high audio fidelity and low power consumption.

Audio Amplifiers Replacement Considerations

MAX9722AEUE+