This design construct an sinusoidal signal generator based on DDS(Direct Digital Frequency Synthesis), completed by MCU AT89S52 and necessary analog circuit.
本设计采用AT89S52单片机，辅以必要的模拟电路，实现了一个基于直接数字频率合成技术（DDS）的正弦信号发生器。
The software is composed of two parts: the communication programming of 3350 main board and the analog code pro? gramming of the signal generator.
软件包括两部分：与外部系统 3350主板之间的通信编程和信号发生器本身的模拟编码发送编程。
In this paper a new type of PAL and NTSC color bar signal generator is described, which consists of a few digital integrated circuits and two analog integrated circuits.
本文介绍了一种新型的彩条信号发生器的设计方法。这种彩条信号发生器由少数几片数字集成电路和两片模拟集成电路构成。
In addition a digital signal generator was incorporated via a DDS chip AD9850 from Analog Devices inc, featuring accurate frequency preset, quick phase transformation and low phase noise.
另外还采用AD公司DDS器件ad9850实现了一种频率可控制、相位变化快、相位噪声低的DDS信号源。
This paper is mainly about an analog saw-tooth signal generator used for linear histogram test of ADCs.
主要内容是基于线性直方图法测量模—数转换器性能的片上模拟锯齿波发生器的实现方法。
However, extending the upper frequency of such function signal generator is limited by the read-out time of the memory and the conversion rate of the digital-to-analog converter.
可是，这种信号发生器的上限频率的提高受存储器的读取时间和数模转换器的转换速度的限制。为了提高数字法函数信号发生器的上限频率，我们提出了用分布存储式数字法生成函数信号。
However, extending the upper frequency of such function signal generator is limited by the read-out time of the memory and the conversion rate of the digital-to-analog converter.
可是，这种信号发生器的上限频率的提高受存储器的读取时间和数模转换器的转换速度的限制。为了提高数字法函数信号发生器的上限频率，我们提出了用分布存储式数字法生成函数信号。
应用推荐