A linear power amplifier is used, which is mainly made up of an operation amplifier and a Darlington transistor because of the low power range. 由于是處在小功率范圍，功率放大器采用的是線(xiàn)性放大器，由一個(gè)運算放大器和一個(gè)達林頓管構成了功率放大器的主體。
In addition to the aforementioned circuit implementations, this dissertation proposes a novel method for increasing linear output power under the same VDD and loads. 除了上述的單晶片音頻放大器實(shí)現之外，本論文同時(shí)提出一個(gè)創(chuàng )新的方法使得數位放大器在相同電壓與負載下可以延伸線(xiàn)性輸出功率范圍。
