MAX9789BETJ+T

Audio Amplifiers Overview

The MAX9789BETJ+T is a Windows Vista-compliant stereo Class AB speaker amplifier and DirectDrive headphone amplifier manufactured by Analog Devices Inc./Maxim Integrated. It integrates a 2W stereo speaker amplifier, a 100mW DirectDrive headphone amplifier, and a 120mA low-dropout linear regulator (LDO). The device operates on a single 4.5V to 5.5V supply within an industrial temperature range of -40°C to +85°C. Key electrical specifications include a power supply rejection ratio (PSRR) of +90dB and a total harmonic distortion plus noise (THD+N) of 0.002%. The component utilizes a 32-pin thin QFN package measuring 5mm x 5mm x 0.8mm.

Audio Amplifiers Feature Summary

• Integrates a 2W stereo Class AB speaker amplifier with a 100mW DirectDrive headphone amplifier for simplified audio design.
• Includes a built-in 120mA LDO providing stable power for external codecs or analog circuits with high PSRR.
• DirectDrive architecture eliminates the need for large output coupling capacitors, reducing board space and cost.
• Features click-and-pop suppression circuitry to minimize audible transients during power-up and shutdown.

Audio Amplifiers Applications

• Windows Vista-compliant portable multimedia players
• Notebook computers requiring integrated audio amplification
• Tablet devices needing compact stereo speaker solutions
• Portable electronics utilizing DirectDrive headphone outputs

Audio Amplifiers Procurement Notes

Verify the specific suffix 'BETJ' against official manufacturer documentation to confirm pinout and thermal pad configuration. Confirm RoHS compliance status through current datasheets as product lifecycles may change. Ensure the ordering part number matches the exact package dimensions and lead frame material specified in the latest release notes before finalizing procurement.

Audio Amplifiers Selection Notes

Select this component when designing systems requiring both speaker and headphone amplification on a single chip. The integrated LDO simplifies power distribution for associated audio codecs. Consider the 32-pin QFN package constraints for thermal management and PCB layout. Verify that the required output power aligns with the 2W speaker and 100mW headphone capabilities under the target load impedance conditions.

Audio Amplifiers Part Context

This part belongs to the MAX9789 series of audio amplifiers designed for mobile computing platforms. It combines multiple audio functions into one solution to reduce bill-of-materials count. The series is characterized by its compatibility with Microsoft Windows Vista audio standards and its focus on minimizing external component count while maintaining high audio fidelity.

Audio Amplifiers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult official distributor databases for cross-reference data if replacement is necessary.