ACM8687 built-in virtual bass/3D surround sound algorithm, 41W stereo I2S input digital power amplifier IC product introduction

    ACM8687 is a highly integrated and efficient dual channel digital input audio amplifier. The power supply voltage range is 4.5V-26.4V, and the digital interface power supply supports 3.3V. Under a load of 6 ohms, the output power can reach 2 × 41W, PBTL 3 Ω load mode, single channel can output 1 × 82W@1 %THD+N.

    ACM8687 adopts a new PWM pulse width modulation architecture that dynamically adjusts the pulse width based on signal size, reducing static power consumption, improving efficiency, and preventing the generation of POP tones while ensuring audio performance.

    The application of spread spectrum technology can significantly reduce EMI radiation. Within a certain range of power and horn line length, magnetic beads can be used to replace inductance schemes, thereby optimizing cost and circuit area.

    ACM8687 highly integrates multiple sound effect algorithms. The internal modules can be independently controlled, and the left and right channels can also be independently controlled. Internally integrated digital and analog gain adjustment, signal mixing module, 11 EQs and 2 Post EQs, two low volume bass enhancement modules, as well as virtual bass enhancement and 3D surround sound effects.

    In addition, the new 3-segment DRC can help users achieve smooth and distortion free multi segment sound control.