AD82551A
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.
Key Features
- PSNR & DR (A-weighting) Loudspeaker: 98dB (PSNR), 102dB (DR) Headphone: 87dB (PSNR), 96dB (DR)
- System clock = 256Fs z 8Fs switching for loudspeakers and headphones
- 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
- Loudspeaker power 2.3W into 4Ω load @ 0dB 1kHz sinewave input 1.3W into 8Ω load @ 0dB 1kHz sinewave input
- Loudspeaker power efficiency (η) 86% for 4Ω @ 0dB 1kHz sinewave input 91% for 8Ω @ 0dB 1kHz sinewave input
- Volume control 53steps:0~-40dB(1dB/step) -42~-64dB(2dB/step)
- Mute function
- Power down function
- Anti-pop design
- Over-temperature protection
