MAX9725DEBC+

Audio Amplifiers Overview

The MAX9725DEBC+ is a fixed-gain, stereo headphone amplifier utilizing DirectDrive architecture to eliminate DC-blocking capacitors. It operates from a single 0.9V to 1.8V supply and delivers up to 20mW per channel into a 32Ω load with 0.006% THD+N. The device features an inverting charge pump for ground-referenced outputs, integrated click-and-pop suppression, and ±8kV ESD protection on outputs. It includes a low-power shutdown mode reducing current to 0.6µA and short-circuit protection.

Audio Amplifiers Feature Summary

• DirectDrive architecture eliminates the need for large output DC-blocking capacitors by generating a negative internal supply via an inverting charge pump.
• Integrated comprehensive click-and-pop suppression circuitry prevents audible transients during power-up and shutdown transitions.
• Includes a low-power shutdown control pin that reduces supply current significantly when the device is disabled.
• Outputs are protected against electrostatic discharge events of ±8kV using the Human Body Model.

Audio Amplifiers Applications

• Portable audio equipment such as MP3 players
• Cellular phones and PDAs
• Smartphones

Audio Amplifiers Procurement Notes

Verify the specific suffix DEBC+ corresponds to the 12-pin Thin QFN package (4mm x 4mm) rather than the UCSP variant. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure the ordering code matches the required gain configuration and thermal specifications for the target application environment.

Audio Amplifiers Selection Notes

Select this component for designs requiring minimal board space due to the elimination of bulky output coupling capacitors. The fixed -4V/V gain suits applications needing high amplification without external feedback networks. Consider the 0.9V minimum supply voltage for battery-operated devices where power efficiency is critical.

Audio Amplifiers Part Context

This part belongs to the MAX9725 family of 1V, low-power, DirectDrive stereo headphone amplifiers. The series includes variants with fixed gains (-2V/V, -1.5V/V, -1V/V) and an adjustable gain version. All members share the same core architecture, offering high PSRR and low distortion for portable consumer electronics.

Audio Amplifiers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.