New stereo Class-D audio power amplifier targets wireless media speakers

Featuring low THD+N, low EMI and high PSRR, the Diodes Incorporated PAM8106 is a 10W stereo Class-D audio amplifier that integrates SSM and NCPL technology to provide advanced features for a range of battery or line-powered devices including wireless speakers, LCD TVs, portable stereos, and game machines. The device works from a wide input voltage range (4.5V to 15V) and is capable of driving both 8Ohm and 4Ohm speakers. Its high efficiency of up to 92% reduces heat generation, eliminating the need for heat-sink, therefore, avoiding the cost, weight and space associated with adding a heat-sink in the final application. With a low quiescent current of just 15mA, the device is well-suited for Li+ or alkaline battery-driven portable speakers, providing longer audio enjoyment with better sound quality. The device also features NCPL technology, which automatically adjusts the gain to eliminate clipping at the output signal due to high-level input signals. The device also offers low THD+N to provide further speaker protection. Additional protection integrated into the device protects against faults caused by short circuits, and thermal shutdown, undervoltage and DC input protection are also integrated.