MAX9750CEUI

Audio Amplifiers Overview

The MAX9750CEUI is a stereo audio power amplifier and DirectDrive headphone amplifier manufactured by Analog Devices Inc./Maxim Integrated. It integrates a 2.6W Class AB BTL speaker amplifier with a 110mW stereo DirectDrive headphone driver in a single device. The unit operates on a 4.5V to 5.5V single supply, utilizing patented DirectDrive architecture to eliminate external DC-blocking capacitors. Key electrical parameters include a 90dB PSRR, 0.01% THD+N at 1kHz, and selectable gain settings. It features analog volume control, beep input with glitch filter, and short-circuit/thermal protection.

Audio Amplifiers Feature Summary

• Patented DirectDrive architecture produces ground-referenced output from a single supply, eliminating the need for large DC blocking capacitors.
• Industry-leading click-and-pop suppression ensures clean audio transitions during power-up and shutdown.
• Integrated analog volume control and selectable gain settings allow flexible system configuration.
• Built-in short-circuit and thermal protection safeguards the device under fault conditions.

Audio Amplifiers Applications

• Notebook PCs
• Flat-Panel TVs
• Tablet PCs
• PC Displays
• Portable DVD Players

Audio Amplifiers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for obsolescence notices, as this part may be discontinued. Ensure the specific suffix matches required package and temperature ratings. Request original datasheets and test reports to validate performance specifications against design requirements before final procurement decisions.

Audio Amplifiers Selection Notes

Select this component when designing compact audio systems requiring integrated speaker and headphone amplification without external coupling capacitors. It is suitable for applications demanding low distortion and high power supply rejection ratio. Consider the 28-pin TSSOP package constraints and verify that the 4.5V to 5.5V supply range aligns with the system power architecture. Evaluate thermal dissipation requirements for the specified load conditions.

Audio Amplifiers Part Context

This device belongs to the MAX9750 family of stereo audio amplifiers, which also includes variants like the MAX9750AETI+ and MAX9750AEUI+. These components share core functionality but differ in packaging options such as TQFN and TSSOP. The family is designed for portable electronics where space savings and component count reduction are critical design drivers.

Audio Amplifiers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit designs if considering alternative devices from the same manufacturer or other vendors offering similar DirectDrive technology.