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首页> 外文期刊>Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on >An ultra-compact and low-power oven- controlled crystal oscillator design for precision timing applications
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An ultra-compact and low-power oven- controlled crystal oscillator design for precision timing applications

机译：超紧凑，低功耗的烤箱控制晶体振荡器设计，适用于精密定时应用

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摘要

A novel design for a chip-scale miniature ovencontrolled crystal oscillator (OCXO) is presented. In this design, all the main components of an OCXO-consisting of an oscillator, a temperature sensor, a heater, and temperaturecontrol circuitry-are integrated on a single CMOS chip. The OCXO package size can be reduced significantly with this design, because the resonator does not require a separate package and most of the circuitry is integrated on a single CMOS chip. Other characteristics such as power consumption and warm-up time are also improved. Two different types of quartz resonators, an AT-cut tab mesa-type quartz crystal and a frame enclosed resonator, allow miniaturization of the OCXO structure. Neither of these quartz resonator types requires a separate package inside the oven structure; therefore, they can each be directly integrated with the custom-designed CMOS chip. The miniature OCXO achieves a frequency stability of + 0.35 ppm with an AT-cut tab mesa-type quartz crystal in the temperature range of 0u000b0;C to 60u000b0;C. The maximum power consumption of this miniature OCXO is 1.2 W at start-up and 303 mW at steady state. The warm-up time to reach the steady state is 190 s. These results using the proposed design are better than or the same as high-frequency commercial OCXOs.
机译：提出了一种芯片级微型恒温晶体振荡器（OCXO）的新颖设计。在这种设计中，由振荡器，温度传感器，加热器和温度控制电路组成的OCXO的所有主要组件都集成在单个CMOS芯片上。通过这种设计，可以大大减小OCXO封装的尺寸，因为谐振器不需要单独的封装，并且大多数电路都集成在单个CMOS芯片上。诸如功耗和预热时间之类的其他特性也得到了改善。两种不同类型的石英谐振器，一种AT切割的凸台台面型石英晶体和一个框架封闭的谐振器，可以使OCXO结构小型化。这两种石英谐振器都不需要在烤箱结构内部单独包装；因此，它们都可以直接与定制设计的CMOS芯片集成在一起。微型OCXO在0u000b0; C至60u000b0; C的温度范围内使用AT切割的台面台面型石英晶体实现了+ 0.35 ppm的频率稳定性。微型OCXO的最大功耗在启动时为1.2 W，在稳态时为303 mW。达到稳态的预热时间为190 s。使用建议的设计得到的结果优于或超过高频商用OCXO。

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