摘要
介绍了一种20W音频功率放大器专用电路的工作原理及其电路与版图设计。该电路在音频放大应用中具有低失真度的高性能,能够在电源电压±25V的条件下为4Ω或8Ω的负载提供20W的功率输出。该电路设计采用了先进的线路结构,保证了大功率输出时的低失真度,同时具有高增益、高速、宽带、大输出摆幅、大输出电流和大电源电压范围等特点。
A 20 W audio power amplifier has been developed, which, having very low distortion and high quality performance for audio applications, is capable of delivering 20 W of output to a 4 Ω or 8 Ω load at ±25 V power supplies. The amplifier is designed to operate with a minimum of external components. The design takes advantage of advanced circuit techniques and process technology to achieve extremely low distortion levels even at high output power. The circuit also features high gain, high slew rate, broad bandwidth, large output voltage swing, high current, and a very wide supply range.
出处
《微电子学》
CAS
CSCD
北大核心
2004年第2期175-177,180,共4页
Microelectronics
