小型化宽温高精度温补晶振的设计与实现  

Design of a miniature temperature compensated crystal oscillator with high precision in wide temperature range

作　　者：闫建成 蒋松涛 吴海钧 李陈 YAN Jian-cheng;JIANG Song-tao;WU Hai-jun;LI Chen(Chengdu Spaceon Electronics Company Limited,Chengdu 610015,China)

机构地区：[1]成都天奥电子股份有限公司,成都610015

出　　处：《时间频率学报》2024年第1期18-25,共8页Journal of Time and Frequency

基　　金：成都天奥电子股份有限公司技术创新基金(PZT200601)。

摘　　要：介绍了一种小型化宽温高精度温补晶振的设计方案及其补偿的实现。该设计的核心是采用专用温补芯片和分立结构实现产品的小型化和低功耗,并避免环境温度对补偿精度的干扰,保证温补晶振宽温高精度的实现。通过这种补偿方法研制的10 MHz温补晶振,在-55℃~+85℃范围内频率温度稳定度优于±0.28×10^(-6),相位噪声优于-150dBc/Hz@1kHz。测试结果表明,该温补晶振具有体积小,工作温度范围宽,功耗低和相位噪声特性良好等特点。同时该产品可靠性高,适合批量化生产,可广泛用于军民测控通讯类设备中。This paper introduces the design scheme of a miniaturized wide temperature high-precision temperature compensated crystal oscillator(TCXO)and its implementation of compensation.The core of the design is to use a special temperature compensation chip and the separate structure to achieve miniaturization and low power consumption of the product,avoiding the interference of ambient temperature on the compensation accuracy,to ensure the realization of TCXO wide temperature range and high precision.The 10 MHz temperature-compensated crystal developed by this compensation method has a frequency temperature stability better than±0.28×10^(-6)over the range of-55℃to+85℃,and a phase noise better than-150 dBc/Hz@1 kHz.The test results show that the TCXO has the characteristics of small size,wide operating temperature range,low power consumption and low phase noise characteristics.At the same time,the product has high reliability,suitable for mass production,and can be widely used in military and civilian fields,such as measurement and control communication devices.

关 键 词：温补晶振 小体积 低相位噪声 

分 类 号：TN752[电子电信—电路与系统]