Maxim Integrated MAX9755ETI+ Audio Amplifier

The MAX9755ETI+ from Maxim Integrated is a high-performance, low-power, Class D audio amplifier that offers a seamless audio experience for a wide range of applications. Designed with efficiency in mind, this audio amplifier integrates a DirectDrive® technology that eliminates the need for bulky DC-blocking capacitors, thus saving on board space and component cost.

With its tiny 28-pin TQFN (Thin Quad Flat No leads) package, the MAX9755ETI+ is ideal for portable applications where space is at a premium. It delivers up to 2.2W per channel into a 4Ω load, making it powerful enough for many portable audio devices, such as mobile phones, tablets, and laptops, as well as for home audio systems and active speakers.

One of the key features of the MAX9755ETI+ is its high efficiency, which not only reduces power consumption but also minimizes heat generation. This is particularly important in compact devices where thermal management can be challenging. The amplifier operates from a single 2.7V to 5.5V supply, providing flexibility in various power environments.

Furthermore, the MAX9755ETI+ boasts a comprehensive set of protection features to ensure reliability and longevity. These include over-current protection, thermal overload protection, and under-voltage lockout. Additionally, the device offers a low 0.02% THD+N (Total Harmonic Distortion plus Noise) at 1kHz, ensuring high-fidelity audio reproduction that is free from distortion and noise.

Users will appreciate the ease of use provided by the MAX9755ETI+'s fully differential inputs, which reduce RF interference and improve sound quality. The amplifier also includes externally configurable gain settings, a shutdown mode for power savings, and a click-and-pop suppression feature that enhances the listening experience by minimizing noise during turn-on and turn-off transitions.

In summary, the MAX9755ETI+ from Maxim Integrated is a compact, efficient, and powerful Class D audio amplifier that delivers high-quality sound reproduction with the added benefits of space-saving integration and advanced protection features. Its versatility makes it an excellent choice for designers looking to enhance the audio performance of their portable or space-constrained devices.