MAX9750AEUI+T

Audio Amplifiers Overview

The MAX9750AEUI+T is a stereo audio power amplifier and DirectDrive headphone amplifier from Analog Devices/Maxim Integrated. It integrates a Class AB 2.6W BTL speaker amplifier and a 110mW DirectDrive headphone amplifier in a single device. Operating on a 5V single supply, it features high 90dB PSRR and low 0.01% THD+N for clean amplification. The unit includes an analog volume control, BEEP input with glitch filter, selectable gain settings, and industry-leading click-and-pop suppression. It operates within the -40°C to +85°C temperature range.

Audio Amplifiers Feature Summary

• DirectDrive architecture eliminates bulky DC-blocking capacitors by generating a ground-referenced output from a single supply.
• Integrated analog volume control and BEEP input with glitch filter for system alerts.
• Industry-leading click-and-pop suppression minimizes audible transients during power cycles.
• Automatic headphone detection via HPS input switches between speaker and headphone modes.

Audio Amplifiers Applications

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

Audio Amplifiers Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm the 'A' grade designation matches required gain specifications against the datasheet table. Ensure the manufacturer is identified as Analog Devices Inc./Maxim Integrated. Check RoHS compliance status for environmental requirements. Validate the 28-pin TSSOP package dimensions against PCB layout constraints.

Audio Amplifiers Selection Notes

Select this component for applications requiring integrated speaker and headphone driving without external coupling capacitors. The MAX9750 variant specifically provides analog volume control and a BEEP input, distinguishing it from the multiplexer-based MAX9751. Consider the 28-pin TSSOP package for surface-mount assembly. Evaluate thermal performance given the exposed paddle requirement for heat dissipation in compact designs.

Audio Amplifiers Part Context

This part belongs to the MAX9750/MAX9751/MAX9755 family of DirectDrive audio amplifiers. These devices combine stereo audio power amplification with headphone driving capabilities. The family utilizes Maxim's patented DirectDrive technology to simplify board design by removing large DC-blocking capacitors. The series supports single-supply operation and offers various gain configurations and input options across different model variants.

Audio Amplifiers Replacement Considerations

MAX9750CETI+T

Audio Amplifiers FAQ

How does the DirectDrive architecture benefit the design?

It produces a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, which saves cost, space, and component height.

What protection features are included?

The device includes thermal-overload protection, output short-circuit protection, and ±8kV ESD-protected headphone driver outputs.

How is the headphone mode activated?

The Headphone Sense (HPS) input monitors the jack; a voltage greater than 2V disables the bridge amplifiers and enables the headphone amplifiers.