Rochester Electronics Linear - Amplifiers - Audio MAX9765ETJ+

The MAX9765ETJ+ is a 750mW audio amplifier designed for stereo speaker playback applications. It features a stereo bridge-tied load (BTL) speaker amplifier, a stereo headphone amplifier, and a single-ended output microphone amplifier, all integrated into a compact 32-pin thin QFN package. The device operates from a single supply voltage range of 2.7V to 5.5V and is capable of delivering up to 750mW of continuous average power into a 4Oc load in speaker mode, and 65mW into a 16Oc load in headphone mode. The amplifier boasts a high power-supply rejection ratio (PSRR) of 95dB, ensuring reliable performance even with noisy power supplies. It also features ultra-low total harmonic distortion plus noise (THD+N) of 0.003%, providing clean audio amplification. Additional features include click-and-pop suppression to eliminate audible transients during power-up and shutdown, an input multiplexer for selecting multiple audio sources, and I2C control for flexible operation. The device is specified for an extended temperature range of -40¬8C to +85¬8C and includes short-circuit and thermal-overload protection, making it suitable for various audio applications such as tablets, cell phones, and digital cameras.