用于高可靠性应用的真空密封OCXO的设计考虑

R. Clark, A. Scalpi
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引用次数: 4

摘要

众所周知,使用包含晶体和振荡器电路的真空密封外壳可以在提高OCXO的性能方面具有重要价值。本文报告了一种新的真空密封OCXO的设计,称为EMXO,其设计目标是(1)允许使用几种不同的晶体外壳的设计,包括标准的to -8,(2)零件数量比以前的设计减少约50%,(3)利用高可靠性组件的规定,如陶瓷结构上的“S”级。由此产生的烘箱热阻测量值约为180/spl°/C/W,从而在-55/spl°/C时产生小于1 W的稳态功耗。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design considerations of vacuum-sealed OCXO's for high reliability applications
It is well known that the use of a vacuum sealed enclosure which contains the crystal and oscillator circuitry can be of significant value in enhancing the performance of OCXO's. This paper reports on the design of a new vacuum sealed OCXO termed the EMXO having the design objectives of (1) a design which allows for the use of several different crystal enclosures, including the standard TO-8, (2) a parts count reduction of approximately 50% over previous designs and (3) a provision to utilize high reliability components such as class "S" on ceramic construction. The resulting oven thermal resistance measured approximately 180/spl deg/C/W thereby yielding a steady state power dissipation of less than 1 W at -55/spl deg/C.
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