具有SPI接口的数字式同步发送器设计  

Design of digital synchronizer transmitter with SPI interface

作　　者：于相斌[1] 董劲峰[1] 

机构地区：[1]空军航空大学控制工程系,长春130022

出　　处：《电子测量技术》2007年第2期75-77,共3页Electronic Measurement Technology

摘　　要：数字式同步发送器可根据给定的数字量,发出高精度的同步器信号,因此常应用于先进的检测设备中。但目前数字式同步发送器采用的都是并行接口,使用不方便,并且体积较大、价格较高。所以高精度、低成本、小体积的数字式同步发送器,是目前研制便携式仪器设备的急需部件。文中提出了一种基于MAX532D/A变换器,具有SPI同步串行接口的数字式同步发送器的详细设计方法,并给出了验证公式和实测误差。实际应用证明,该同步发送器具有体积小、性能价格比高、使用灵活方便、工作可靠等特点,具有较高的应用价值。The digital synchronizer transmitter can produce high precision synchronizer signal according to the given digital quantity, so it is often used in the advanced testing equipment. However, this kind of synchronizer transmitter often adopt parallel interface, which is not convenient for use. Besides, it has a big size and high price. Therefore the digital synchronizer transmitter with the feature of high precision, low cost and small size is an urgent component in developing the portable equipment. A digital synchronizer with SPI interface based on MAX532 D/A converter is introduced. The checking formula and error are also provided. It has been proved that this synchronizer has the property of small size, high ratio of property to price, flexible and reliability. It has high practical value.

关 键 词：SPI接口 MAX532 D/A变换器 同步发送器 

分 类 号：TP331.2[自动化与计算机技术—计算机系统结构]