MAX9729ETI+

Audio Amplifiers Overview

The MAX9729ETI+ is a stereo headphone amplifier from the DirectDrive series, manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1.8V to 3.6V and delivers 52mW per channel into a 32-ohm load. The device utilizes Class AB topology and is housed in a 28-pin TQFN (5x5mm) package with an exposed pad for surface mount mounting.

Audio Amplifiers Feature Summary

• Integrates BassMax bass boost functionality for enhanced low-frequency response
• Includes I²C interface for digital control of volume and input selection
• Features built-in short-circuit and thermal protection mechanisms

Audio Amplifiers Applications

• Stereo headphone amplification in portable audio devices
• Mobile phone audio output stages
• MP3 players and digital media players

Audio Amplifiers Procurement Notes

Verify the exact datasheet revision and ordering suffix when sourcing. Confirm that the component matches the specified 28-TQFN package dimensions. Ensure compatibility with the target system's I²C bus voltage levels. Check for end-of-life status or alternative recommendations from the manufacturer.

Audio Amplifiers Selection Notes

Select this component for applications requiring integrated bass enhancement and digital control via I²C. It is suitable for systems operating between 1.8V and 3.6V. Consider the 52mW output power capability relative to the connected headphone impedance. Verify that the TQFN package fits the available PCB footprint.

Audio Amplifiers Part Context

This part belongs to the DirectDrive family of audio amplifiers designed for mobile and portable electronics. It combines analog amplification with digital control features to reduce external component count. The MAX9729ETI+ represents a solution for high-quality audio playback in space-constrained handheld devices.

Audio Amplifiers Replacement Considerations

Check Analog Devices documentation for current alternatives if this part is discontinued. Verify pinout and functional compatibility before substituting with other stereo headphone amplifiers.