一种新型小尺寸微机补偿晶体振荡器

A New Small Size of Microcomputer Compensated Crystal Oscillator

现代电子技术对电子器件的小型化和低功耗有着越来越高的要求,我们设计了一种以微处理器为核心的基于AT切晶体谐振器的小型微机补偿晶体振荡器(MCXO).它所有的器件采用贴片封装,用软件来代替部分硬件电路.补偿后频率温度稳定度为±4.7×10-7(-40～+85℃),工作电压为3.3V,消耗的功率约为50mW.该振荡器为标准的DIP14封装,其体积只有17.3mm×9.5mm×10mm,它结构简单,造价低,开机即可正常工作,具有很强的竞争力.

Modern electronic technology has higher and higher demands on miniaturization and low-power-consumption to electronic devices. We design a new small size of microcomputer compensated crystal oscillator （MCXO）, which bases on AT-cut crystal and uses microcomputer as its core. All the packaging of its components are Surface Mount Device（SMD）, and we use software to instead of some hardware circuits. Its stability can arrive at ±4. 7×10^-7 after compensation（-40～ ＋85℃）, its operating voltage is 3. 3 V, and its power consumption is about 50 mW. The packaging of the MCXO introduced is standard DIP14, which is no more than 17. 3 mm× 9. 5 mm× 10 mm, it has competitive advantages as follows, simple in structure, low in price and can work immediately after starting up.