MAX9850ETI+TG47

Audio Amplifiers Overview

The MAX9850ETI+TG47 is a stereo audio amplifier IC from the DirectDrive series, manufactured by Analog Devices Inc./Maxim Integrated. It integrates an AB-class amplifier with a digital-to-analog converter (DAC) and supports I2C and I2S interfaces. The device operates on a single supply voltage ranging from 1.8 V to 3.6 V. It delivers 95 mW per channel into a 16-ohm load. Key features include digital volume control, mute, shutdown, depop, and line-level input/output capabilities. The component is housed in a 28-TQFN package with exposed pad.

Audio Amplifiers Feature Summary

• Integrates a stereo AB-class amplifier with a built-in DAC for direct drive applications
• Supports digital control via I2C and I2S interfaces for volume, mute, and shutdown functions
• Includes depop circuitry to minimize audible noise during power transitions

Audio Amplifiers Applications

• Portable audio devices requiring integrated amplification and conversion
• Headphone drivers in mobile phones and tablets
• Line-level output stages in compact consumer electronics

Audio Amplifiers Procurement Notes

Verify the specific suffix +TG47 against official manufacturer documentation to confirm compliance details and revision status. Confirm availability as this variant may be discontinued or superseded by newer revisions within the MAX9850 family. Ensure compatibility with existing PCB footprints and thermal requirements for the 28-TQFN package before procurement.

Audio Amplifiers Selection Notes

Select this component when a combined DAC and amplifier solution is required to save board space. Verify that the system power supply falls within the 1.8 V to 3.6 V range. Ensure the application utilizes digital audio inputs compatible with I2C/I2S protocols. Check if the 95 mW output power meets the specific speaker or headphone impedance requirements of the design.

Audio Amplifiers Part Context

The MAX9850ETI+TG47 belongs to the DirectDrive family of audio amplifiers. This series is designed to eliminate external components typically needed for biasing and coupling capacitors. The +TG47 suffix indicates a specific lead-free and packaging variation within the broader MAX9850 product line, sharing core functionality with other variants like the MAX9850ETI+T.

Audio Amplifiers Replacement Considerations

Check for MAX9850ETI+T or MAX9850ETI+ as potential functional equivalents. Verify pinout and electrical specifications match exactly. Note that the +TG47 variant may be discontinued; consult the manufacturer's obsolescence notices for recommended upgrades.