文章编号：1004－5422(2021)03－0262－06                                            DOI:10.3969/j.issn.1004-5422.2021.03.007

基于MSP430的多功能信号发生器设计

摘  要：针对一般信号发生器存在价格昂贵、便携性差，且在特定场合产生信号针对性不强等问题，基于直接数字频率合成原理，设计了一种多功能信号发生器.信号发生器以MSP430F149单片机为控制核心，利用AD9852芯片产生1Hz～20MHz的正弦信号及AM、ASK、BPSK、FSK等多种调制信号.整个系统结构紧凑，具有良好的人机交互界面,电路简单,功能强大，具有较好的稳定性和抗干扰性能，使用方便.
关键词：多功能；信号发生器；DDS；MSP430；AD9852
中图分类号：TN741;TP368.1              文献标识码：A

Design of Multifunctional Signal Generator Based on MSP430

WANG Qin, CHENG Hui

(School of Electronic Information and Electrical Engineering, Chengdu University, Chengdu 610106, China)

Abstract：Aiming at the problems of general signal generators such as high price, poor portability and weak pertinence in specific occasions, a multifunctional signal generator was designed based on the principle of Direct Digital Frequency Synthesis (DDS). The signal generator used MSP430F149 microcontroller as the control core, and used AD9852 chip to generate sinusoidal signal of 1 Hz ~ 20 MHz and various modulation signals such as AM, ASK, BPSK, FSK, etc. The whole system had a good man-machine interaction interface and had the advantages of compact structure, simple circuit, powerful function, good stability and anti-jamming performance, and being easy to use.
Key words：multifunction; signal generator; DDS; MSP430; AD9852