AD6255A

ESMT Features z Compliant with USB S pecification v1.1, and USB 2.0 full speed z Embedded high efficiency, high performance class D stereo amplifier z Support I2S input and I2S output interface of master mode Sampling frequencies(Fs)：48kHz z +6dB enhancement(Theater function) z Support recording function z Support both bus-powered and self-powered operation z Supports Win Me//2000/XP and MacOS z True plug-and-play application, no driver is required for basic USB speaker application z Support volume/mute control with external button z Built-in 5V to 3.3V regulator for internal device operation zT otal efficiency 80% for 8Ω load @ -1dB 1kHz sine wave input z Loudspeaker PSNR & DR (A-weighting) 80dB (PSNR), 78dB (DR) with Bead filter AD6255A Class-D Audio Power Amplifier with USB / I2S Interface and Recording function 82dB (PSNR), 78dB (DR) with Chock filter z Anti-pop design z Over-temperature protection z Under-voltage shutdown z Short-circuit detection z 12 MHz Crystal Input z 32-pin LQFP(Pb free) Description AD6255A is a single chip of Class-D audio amplifier with USB/I2S interface an d sup ports recording function. When using the po wer supplied from the USB port, AD6 255A can drive a pair of u p to 1W spe akers d ue to the built-in, hig h ef ficiency and hig h p erformance class D am plifiers. Th e device also has an I2S input port and I2S output port. The I 2S input port allo ws oth er ex ternal a udio sources t o u se t he cla ss D amplif ier t o sha re t he speakers....