AD82550A Datasheet | Elite Semiconductor Memory Technology

Features z 16/18/20/24-bit input with I S data format z PSNR & DR (A-weighting) Loudspeaker: 98d B (PSNR), 106d B (DR) Headphone: 87d B (PSNR), 96d B (DR) z Multiple sampling frequencies (Fs) 8k Hz, 12k Hz, 16k Hz, 22.05k Hz, 24k Hz 32k Hz, 44.1k Hz, 48k Hz, 64k Hz, 88.2k Hz and 96k Hz .. z System clock = 256Fs z 8Fs switching for loudspeakers and headphones z Single or dual supply Single supply: 3.0~3.3V for the whole chip Dual supply: 3.0~5V for loudspeaker drivers 3.0~3.3V for others z Loudspeaker power 3.5W into 4Ω load @ 0d B 1k Hz sinewave input 2.0W into 8Ω load @ 0d B 1k Hz sinewave input z Loudspeaker power efficiency (η) 86% for 4Ω @ 0d B 1k Hz sinewave input 91% for 8Ω @ 0d B 1k Hz sinewave input z Headphone power 35m W into 32Ω @1k Hz and 1% THD+N 65m W into 16Ω @1k Hz and 1% THD+N 113m W into 8Ω @1k Hz and 1% THD+N z Volume control for loudspeakers 53steps:+6~-34d B(1d B/step)-36~-58d B(2d B/step) z Mute function z Power down function z Anti-pop design z Over-temperature protection z Under-voltage shutdown z Short-circuit detection Stereo Digital Audio Amplifier with Headphone Driver z CD and DVD z TV audio z Internet audio z USB speaker z MP3 z Headphone Amplifier z PDA z Portable / Handheld z Mobile phone z Car audio Description This is a stereo digital audio amplifier with high power efficiency, which leads to longer battery life, less heat sink requirement, smaller board size and lower system cost. AD82550A can detect headphone connection and choose to drive either stereo loudspeakers or stereo headphones. Operating with 3.0/3.3/5V loudspeaker driver supply, each loudspeaker channel can typically deliver 0.8/1.0/2.3W to a 4Ω loudspeaker, respectively, with less than 1% THD+N. Operating with 3.0/3.3V headphone driver supply, each headphone channel can typically deliver 29/35m W to 32Ω, 54/65m W to 16Ω and 94/113m W to 8Ω, respectively, with less than 1% THD+N. ORDERING INFORMATION Product Number AD82550A-CG Package 24L SSOP 209mil ments Pb-free Applications Functional...