MAX9724CEBC+TG45

Audio Amplifiers Overview

The MAX9724CEBC+TG45 is a stereo headphone amplifier utilizing DirectDrive architecture for single-supply operation. It delivers up to 60mW per channel into a 32Ω load with 0.02% THD+N. The device operates from a 2.5V to 5.5V supply, consuming 3.5mA quiescent current. It features an adjustable gain configuration, 80dB PSRR at 1kHz, and integrated click-and-pop suppression. The component is housed in a 12-bump UCSP package measuring 1.5mm x 2mm.

Audio Amplifiers Feature Summary

• DirectDrive architecture eliminates bulky DC-blocking capacitors by generating a ground-referenced output from a single supply.
• Enhanced RF noise rejection prevents demodulation of coupled interference on input and supply traces.
• Integrated charge pump creates internal negative supply for bipolar operation without external inductors.
• Comprehensive protection includes thermal-overload shutdown and short-circuit limiting.

Audio Amplifiers Applications

• Cellular Phones
• MP3 Players
• Notebook PCs
• Handheld Gaming Consoles

Audio Amplifiers Procurement Notes

Verify the specific suffix +TG45 indicates lead-free packaging and tape-and-reel delivery format. Confirm the CEBC designation corresponds to the 12-bump UCSP package type. Ensure compatibility with the adjustable gain requirement, as this variant differs from the fixed-gain MAX9724D series. Check for obsolescence status or limited availability through authorized distributors.

Audio Amplifiers Selection Notes

Select this part when board space is constrained due to its compact UCSP footprint. Choose the CEBC variant over the DETC TQFN version if lower profile is required. Verify that the adjustable gain setting meets the system requirements, unlike the internally preset -1.5V/V gain of the MAX9724D. Ensure the application can accommodate the necessary input and charge-pump capacitors for optimal performance.

Audio Amplifiers Part Context

This component belongs to the MAX9724 family of low-power stereo headphone amplifiers. It shares the core DirectDrive technology with the MAX9724D but offers externally adjustable gain via external resistors. The family is designed for portable electronics requiring high audio quality in minimal space.

Audio Amplifiers Replacement Considerations

MAX9724DEBC+T (Fixed Gain)

Audio Amplifiers FAQ

How does the DirectDrive architecture differ from conventional designs?

It uses a charge pump to create an internal negative supply, allowing outputs to be biased about ground. This removes the need for large DC-blocking capacitors typically required by single-supply amplifiers.

What is the function of the SHDN pin?

The SHDN pin controls the low-power shutdown mode. Driving it low disables the amplifiers and charge pump, reducing current consumption to less than 0.1µA.