Maxim Integrated MAX9722BETE+ Audio Amplifier

The MAX9722BETE+ from Maxim Integrated is a high-performance, DirectDrive® stereo headphone amplifier that delivers exceptional audio quality for portable and compact applications. With its integrated charge pump, the amplifier generates a negative supply voltage that allows for ground-referenced outputs, eliminating the need for large and costly DC-blocking capacitors. This feature simplifies the design and reduces the overall size of the audio circuit, making the MAX9722BETE+ an ideal choice for smartphones, tablets, laptops, and other portable media devices.

The amplifier operates over a wide 2.7V to 5.5V supply voltage range, providing designers with flexibility in various system power schemes. It can deliver up to 130mW per channel into a 16Ω load with less than 0.01% THD+N, ensuring a powerful and clean audio output that enhances the listening experience. The high fidelity of the MAX9722BETE+ is further supported by its low 0.003% THD+N at 1kHz, which contributes to its pristine sound reproduction capabilities.

For added versatility, the MAX9722BETE+ features an adjustable gain set by external resistors, allowing for precise volume control to match the requirements of different headphones and earphones. The device also includes a low-power shutdown mode, which reduces power consumption when the amplifier is not in use, thereby prolonging battery life in portable applications.

Designed with a thermal overload protection circuit, the MAX9722BETE+ ensures reliable operation by preventing the device from overheating. Its click-and-pop suppression circuit minimizes audible clicks and pops during startup and shutdown transitions, providing a smoother user experience.

The MAX9722BETE+ is available in a compact, 16-pin TQFN package with an exposed pad, allowing for efficient heat dissipation and a smaller footprint on the PCB. Its robust design and integrated features make it a top choice for designers looking to enhance audio performance without compromising on space or power efficiency.

Overall, the Maxim Integrated MAX9722BETE+ stands out as a superior audio solution for a wide range of applications, delivering high-quality sound, integration convenience, and design flexibility.