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