MAX9722AETE+TG069

Audio Amplifiers Overview

The MAX9722AETE+TG069 is a stereo headphone amplifier utilizing DirectDrive architecture. It operates on a single supply from 2.4V to 5.5V and delivers up to 130mW per channel into a 32Ω load or 70mW into a 16Ω load. The device features adjustable gain for the MAX9722A variant, high PSRR of 80dB at 217Hz, and low THD+N of 0.009%. It includes integrated click-and-pop suppression, ±8kV ESD protection, and short-circuit/thermal-overload protection. The component is housed in a 16-pin Thin QFN package (3mm x 3mm x 0.8mm) and functions over an extended temperature range of -40°C to +85°C.

Audio Amplifiers Feature Summary

• DirectDrive architecture eliminates bulky DC-blocking capacitors by generating ground-referenced outputs from a single supply.
• Integrated charge pump creates a negative rail for bipolar operation without external components.
• Comprehensive click-and-pop suppression circuitry prevents audible transients during power-up and shutdown.
• High power-supply rejection ratio allows operation from noisy digital supplies without additional linear regulators.

Audio Amplifiers Applications

• Notebook and Desktop PCs
• MP3 Players
• Flat-Panel Monitors
• Cellular Phones
• Portable Audio Equipment

Audio Amplifiers Procurement Notes

Verify the specific suffix 'G069' against official Maxim Integrated documentation to confirm it denotes a standard tape-and-reel packaging configuration rather than a unique functional variant. Ensure the ordering part number matches the exact pinout and thermal pad requirements specified in the datasheet for the 16-pin Thin QFN package. Confirm RoHS compliance status through authorized distributors.

Audio Amplifiers Selection Notes

Select this component for portable designs requiring space savings due to the elimination of output coupling capacitors. The MAX9722A offers externally adjustable gain via resistors, whereas the MAX9722B provides a fixed internal gain. Consider the 16-pin Thin QFN package for strict board area constraints. Verify that the differential input configuration meets noise cancellation requirements for the target application environment.

Audio Amplifiers Part Context

This device belongs to the MAX9722 family of stereo headphone amplifiers designed for portable electronics. It shares the DirectDrive technology with other Maxim Integrated audio products but is distinct in its specific gain configurations and package options. The family addresses the industry need for high-fidelity audio in compact form factors by integrating charge pumps and advanced protection circuits.

Audio Amplifiers Replacement Considerations

The MAX9722AEUE is a TSSOP package alternative within the same family. Cross-reference pinouts and thermal characteristics when substituting packages. No direct functional equivalents are confirmed in the provided source material.

Audio Amplifiers FAQ

How does the DirectDrive architecture benefit the design?

It generates ground-referenced outputs using an internal charge pump, eliminating the need for large DC-blocking capacitors, which saves board space and reduces cost.

What is the quiescent current consumption?

The device consumes 5.5mA of supply current in normal operation and reduces to 0.1µA in shutdown mode.