摘要
本文提出了一种新型的传统低频功率放大器的数字化设计方法——利用高性能OCL功率放大电路及信号处理电路、MSP430F5438单片机、液晶显示器等模块组成智能低功耗功率放大器,采用单片机自带的12位ADC功能模块,实时检测功率放大器输出功率和整机效率等参数。电路结构简单,所选器件价格合理,并给出了测试结果。实验结果表明,该功率放大器在带宽、失真度、效率等方面具有较好的指标、较高的实用性。
The design concept of a novel digitizing method to traditional low frequency amplifier is proposed.It is called digital ampli-fier,which is based on OCL power─amplifying unit,MSP430F5438 micro─controller,LCD and singal─processing unit.Parameters of output power,conversion efficiency and others are detected timely with 12-bit ADC modules in MCU.The structure of this circuit is simple.Results of experiments show that the power amplifier has good performance in some aspcets,such as bandwidth,distortion factor,efficiency and so on.
出处
《电子质量》
2010年第11期19-22,共4页
Electronics Quality
基金
兰州市科技发展计划项目(2008-1-2)
甘肃省自然科学基金项目(3ZS042-B25-039)的资助
