The HT4818/7 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.2W to a 4Ωload with less than 1.0% THD+N. In addition, the headphone input pin allows the amplifiers to operate in single-ended mode when driving stereo headphones.Boomer audio power amplifiers were designedspecifically to provide high quality output powerfrom a surface mount package while requiringfew external components. To simplify audiosystem design, the HT4818/7 combines dualbridge speaker amplifiers and stereo headphoneamplifiers on one chip.The HT4818/7 features an externally controlled, low-power consumption shutdown mode, a stereo headphone amplifier mode, and thermal shutdown protection. It also utilizes circuitry to reduce “clicks and pops”during device turn-on.
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