ESMT AD5266 Preliminary 16V STEREO CLASS-D AUDIO POWER AMPLIFIER with STEREO HEADPHONE Description The AD5266 has a high efficiency two-channel Bridge Tied Load (BTL) Class-D audio power amplifier and stereo Class AB headphone amplifiers. The amplifier operates over a supply voltage range 8V to 16V and consumes low quiescent current. Feature z Operate from 8-16V supply voltage z 9.2W per channel into 8 load from 12V supply (10% THD+N, Stereo, Class D Amp) z 15W per channel into 4 load from 12V supply (10% THD+N, Stereo, Class D Amp) z 17W into 4 load from 12V supply (10% THD+N, Mono, Class D Amp.) z 50mW into 32 load from 12V supply (10% THD+N, Stereo, Class AB Headphone Amp.) z Antipop design z Over-temperature protection z Over-current protection z Two volume control modes 4 selectable , fixed gain settings 31-step DC volume control z Clock output for synchronization with multiple class-D devices z 48-pin E-LQFP package Applications z LCD Monitors z Televisions z Powered speakers Elite Semiconductor Memory Technology Inc. Publication Date: Sep. 2007 Revision: 0.1 2/20 ESMT AD5266 Preliminary Block Diagram AVCC Regulator Headphone Amplifier HPR AVDD PVCCR RINP Class D Modulator Gain RINN SDN MUTE FAULT ERR GAIN0 GAIN1 M_S SYNC HP_SPK MODE0 Triangular Wave Generator Control RA RB Thermal Protection Over Current Protection PVCCL Class D Modulator Gain LINN AGND Output stage PGNDR LINP VCM VREF Level Shifter Level Shifter Output stage LA LB PGNDL Headphone Amplifier Elite Semiconductor Memory Technology Inc. HPL Publication Date: Sep. 2007 Revision: 0.1 3/20