一种多路音频切换电路的改进方案

摘要

There is a higher demand for multi-channel audio switching circuit with the rapid development of the PDP, LCD TV. In this paper, an audio switching circuit using 74HC4052 dual 4- channel analog multiplexer/demultiplexer is given. This improved circuit can reduce the complexity of the entire system power supply and reduce the cost.%随着PDP、LCD电视机的快速发展，对多路音频切换电路的要求也越来越高．对一种利用74HC4051实现的音频切换电路进行了改进，改进后的电路采用74HC4052双四选一多路选择、分配器实现，能够降低整个系统供电的复杂性和系统的成本．