直接数字频率合成器的PSoC实现  

The Realization of Direct Digital Frequency Synthesizer in PSoC

作　　者：廖磊[1] 梁文海[1] 刘莉[1] 

机构地区：[1]四川师范大学物理与电子工程学院

出　　处：《微计算机信息》2009年第35期137-138,70,共3页Control & Automation

摘　　要：本文介绍了直接数字频率合成器的原理和特点,然后提出了一种新的DDS实现方案。该方案以一种新型的数模混合信号可编程片上系统为核心,利用PSoC中的可编程模拟资源、数字资源、混合信号资源以及MCU,仅配合几个简单的阻容元件实现了高分辨率正弦信号源。该方式具有极低的成本和高度的灵活性。这种设计能嵌入到各种不同的测试和测量设备中,或作为其它高频信号发生器的一部分。最后也讨论了设计可能的扩展和局限性。In this paper, DDS principles and characteristics are introduced,and then a new approach of the DDS design is proposed. A new type of digital-analog mixed-signal programmable system-on-chip is the core of this design, and programmable analog resources, digital resources, mixed-signal resources and MCU in PSoC are used with only a few simple RC components to achieve a high-resolution sine signal source. The approach has a very low cost and high degree of flexibility. This design can be embedded in various test and measurement equipment, or can be part of other high-frequency generators. The possible extension and design limi- tations are discussed as well.

关 键 词：DDS PSOC M8C 

分 类 号：TN74[电子电信—电路与系统]