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在音响放音系统中,音频功率放大集成电路因设计不同,产地不同而各有千秋,由分立元件到集成电路,由小集成到大集成,电路越来越简洁,功能越来越完善,音质越来越纯美,造型越来越美观,向着便携化、家庭装饰化方向发展。无论国产机还是进口机,无论家庭便携式还是组合式,从其应用电路来看,其工作机理和电路结构几乎是模型化,只是电源电压及电气参数存在差异,如 STK400系列、STK4000系列、TA7200等系列,下面以日常应用最广的功放集成电路结构加以剖析。
In the audio playback system, the audio power amplifier IC due to different design, origin and different strengths and weaknesses, from discrete components to integrated circuits, integrated from small to large integration, the circuit more concise, more and more perfect, more and more sound quality The more pure, more and more attractive appearance, toward the portable, home decoration direction. Regardless of domestic machine or imported machine, regardless of family portable or modular, from the perspective of its application circuit, its working mechanism and circuit structure is almost model, but the power supply voltage and electrical parameters are different, such as STK400 series, STK4000 series, TA7200, etc. Series, below the most widely used amplifier IC integrated circuit structure to be analyzed.