数模转换器DAC1220在驯服时钟中的应用

doi:10.12060/j.issn.1000-7202.2013.01.08

宇航计测技术 ›› 2013, Vol. 33 ›› Issue (1): 39-42.doi: 10.12060/j.issn.1000-7202.2013.01.08

数模转换器DAC1220在驯服时钟中的应用

苏建峰¹；尹冬梅¹

1、中国科学院空间科学与应用研究中心，北京 100190

出版日期:2013-02-15 发布日期:2013-02-15

Application of Digital-to-analog DAC1220 in the Disciplined Clock

SU Jian-feng¹；YIN Dong-mei¹

1、National Space Science Center, Chinese Academy of Sciences, Beijing 100190

Online:2013-02-15 Published:2013-02-15

摘要/Abstract

摘要： 在GPS驯服时钟中，需要将CPU计算所得的控制数字量使用D/A转换器转化为对应的模拟电压，从而实现对VCOCXO的输出频率进行校正，数模转换的精度直接影响振荡频率的控制精度。本文给出了DAC1220数模转换器的工作原理和特点以及其使用方法，并探讨了D/A转换器分辨率与控制晶体时钟频率之间的关系。

关键词: 驯服时钟, 数模转换器, 转换精度, DAC1220

Abstract: In GPS disciplined clock system,in order to calibrated the frequency of VCOCXO, It is necessary to transfer control digital calculated by CPU to corresponding anolog voltage.the paper discussed the principle and application of DAC1220 converter,and expatiates the relationship between the DA converter resolution and frequency calibration of disciplined clock.

Key words: Disciplined clock, D/A Converters, Conversion accuracy, DAC1220

苏建峰；尹冬梅. 数模转换器DAC1220在驯服时钟中的应用[J]. 宇航计测技术, 2013, 33(1): 39-42.

SU Jian-feng；YIN Dong-mei. Application of Digital-to-analog DAC1220 in the Disciplined Clock[J]. JOURNAL OF ASTRONAUTIC METROLOGY AND MEASUREMENT, 2013, 33(1): 39-42.

数模转换器DAC1220在驯服时钟中的应用

Application of Digital-to-analog DAC1220 in the Disciplined Clock

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