摘要
介绍了一种基于数/模变换技术、集成化的多种波形发生器的设计方法。将周期性变化的连续信号经过采样、编码后,获得相应的波代码,波代码存放到EPROM存储器中,一片EPROM存储器可以存储多种波形的波代码,利用波形选择电路选择某种波形的波代码输出,经D/A转换器和放大器输出连续变化的模拟信号。电路中通过改变存储器输出波代码的速度来调节输出信号的频率,改变放大器的放大倍数来调节输出信号的幅值。
A new method is introduced to design an integrated multi-waveform generator based on the D/A conversior technology. Periodical continuous signals have been sampled and encoded before their waveform-codes are saved in an EPROM memory. Various waveform-codes can be saved in the same can be memory chip. Through the use of the circuit to select a special waveform, the waveform-codes can be taken out from the memory, and realized then become analog signal by the control of D/A converter and amplifier. In the circuit, the adjustment of the frequency of the output signals is by chang of the rate at which waveform-codes run out form the locations, and to adjustment of the amplitude of the output signals is realized by the change of the gain of the amplifier.
出处
《连云港化工高等专科学校学报》
2002年第4期10-12,共3页
Journal of Lianyungang College of Chemical Technology
