【作者】 张昭；

【导师】 龚敏；

【作者基本信息】 四川大学 ， 微电子学与固体电子学， 2006， 硕士

【摘要】 电子技术发展至今，出现众多获取频率源的方法，其中晶体振荡器(又称：石英晶体谐振器)由于具有良好的频率稳定性而一直作为主要的精确频率源来使用。同时，随着便携式电子产品(如：通讯设备等)的飞速发展，对频率源的精确性提出越来越高的要求，但是由于晶体本身所固有的温度特性，其振荡频率随温度变化呈近似的三次曲线关系离散，影响其应用的温度范围，成为制约其应用的一种因素。因此为在较宽温度范围内获得更高稳定性的精确频率源，通常采用两种方法获得精确频率源：温度控制和温度补偿。 温度控制通过将振荡器中敏感元件置于恒温槽中，对于晶体振荡器来说就是将晶体置于设定了一定温度的烘箱中，从而避免温度对振荡器产生影响。通过该方法可获得极为精确的频率稳定度。但是体积大，功耗高，不利于便携式产品的应用。 另一种方法是通过温度探测器件得到温度信号，利用电路产生和温度频率离散相反的近似三次函数电压，将该电压施加于压控晶体振荡器(Voltage Controlled Crystal Oscillators，VCXO)中，构成温度补偿晶体振荡器(Temperature Compensation Crystal Oscillator，TCXO)，从而抵消频率随温度的离散。该方法成本低，功耗、体积小，可方便的应用于各类电子产品中。 本文介绍了一种模拟温度补偿晶体振荡器芯片的设计，该芯片利用集成电路制造工艺，将模拟补偿电路及压控晶体振荡器集成于一颗芯片中，使晶体在使用时只需和一颗芯片搭配使用(可封装于同一个管壳内)，即可在较宽温度范围内提供高精度的频率源。并通过芯片内嵌的EEPROM及ROM对补偿特性的更多还原

【Abstract】 From the beginning of electronic technical appearance, there conies out many different ways to get frequency source. Because of the good frequency stability, quartz crystal oscillator is mainly used as the precise frequency source. But with the quick progressing of portable electronic products （eg: communication equipment）, the requirement of the frequency source is more and more precise. The crystal has an intrinsic temperature characteristic that the oscillator frequency will be deviate from temperature as a 3^rd order curve. This characteristic influences the usable temperature range of crystal oscillator. There are two ways to get stable frequency source in a wide range, which are temperature control and temperature compensation.Temperature control is a way that the sensitive components of the oscillator are placed in a temperature stable chamber. In the case of a crystal oscillator, the crystal is placed in a thermal oven that is held at a constant temperature. By this way, oscillators can escape from the influence of temperature, and the oscillators can get extremely stable precise frequency. However, because of the significant size and large current draw, it cannot fit to the application of portable electronic products.Temperature compensation is the other way to get the stable precise frequency source. At first, the temperature signal is measured through the temperature sensor, and then the voltage, which will be imposed into the voltage controlled crystal更多还原