MAX9723DETE+TGA4

Audio Amplifiers Overview

The MAX9723DETE+TGA4 is a stereo DirectDrive headphone amplifier from Analog Devices Inc./Maxim Integrated. It operates on a single 1.8V to 3.6V supply and delivers up to 62mW into a 16Ω load with 0.006% THD+N. The device features integrated BassMax, 32-level volume control via I2C/SMBus, and industry-leading click-and-pop suppression. It includes short-circuit and thermal protection, low-power shutdown (5μA), and ±8kV HBM ESD protection. Available in a 16-pin thin QFN package.

Audio Amplifiers Feature Summary

• DirectDrive architecture eliminates bulky DC-blocking capacitors by generating an internal negative supply for ground-referenced outputs.
• Integrated software-controlled BassMax boosts bass response to compensate for inexpensive headphones.
• Comprehensive click-and-pop suppression ensures minimal audible transients during power-up and shutdown.
• I2C/SMBus-compatible interface enables digital control of volume, gain, and BassMax without external potentiometers.

Audio Amplifiers Applications

• PDA Audio
• Portable CD Players
• Mini Disc Players
• MP3-Enabled Cellular Phones
• MP3 Players

Audio Amplifiers Procurement Notes

Verify the specific suffix 'TGA4' against official manufacturer documentation, as standard datasheets list suffixes like '+ETE+'. Confirm availability status, as some variants may be obsolete or discontinued. Ensure the selected part matches the required I2C slave address and maximum gain configuration (A/B vs C/D) for your system design.

Audio Amplifiers Selection Notes

Select based on required maximum gain: MAX9723A/B offer 0dB max gain, while MAX9723C/D provide +6dB. Choose the appropriate I2C slave address if multiple devices share the bus. Consider the 16-pin thin QFN package for space-constrained designs requiring thermally efficient solutions. Verify compatibility with the host microcontroller's I2C voltage levels.

Audio Amplifiers Part Context

The MAX9723 belongs to Maxim’s DirectDrive family of stereo headphone amplifiers designed for portable audio applications. It replaces traditional single-supply amplifiers that require large output coupling capacitors. The series integrates charge pumps, volume controls, and bass boost features to reduce component count and improve audio performance in battery-powered devices.

Audio Amplifiers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's selector guide for alternative packages or gain configurations within the MAX9723 series.