摘要
在电子和通信产品中往往需要高精度的正弦信号，而传统的正弦信号发生器在输出低频时往往频率稳定度和精度等指标都不高。而Micro Linear公司的ML2035是一款运用直接数字合成技术（DDS）研制的正弦信号发生器，它可以在几乎不需要外部微处理器和其他外围器件的条件下，产生从0～25kHz的正弦信号，通过外接晶振作为时钟输入，通过74LS20产生16位频率控制字来控制ML2035的频率输出。因此利用此芯片设计了100Hz低频正弦信号发生器电路，可以简化设计，提高正弦信号的精度和稳定度。
During the electronic and communication production, the preferable precision of sine signal is always need,but when outputing low frequency,the traditional sine signal generator doesnr t have better frequency precision and stability. The ML2035 of Micro Linear Company is a sine signal generator,which uses DDS. Under hardly need the external microprocessor and other component circumstance,it can generate sine signal from 0; 25 kHz. The input clock uses external crystal,it can produce 16 bit frequency control to control the output frequency of ML2035 by 74LS20. So it is applied to design the 100 Hz low frequency sine signal generator circuit. It can simplify the circuit,enhance the precision and stability of sine signal.
出处
《现代电子技术》
2008年第21期106-108,共3页
Modern Electronics Technique
