什么是Voltage Controlled Crystal Oscillator (VCXO)?
答:指带压控功能的晶体振荡器。
晶诺威科技解释如下:
A Voltage Controlled Crystal Oscillator has its output frequency varied by means of an external control voltage. The most common application for VCXOs are in phase-locked loops.
可以通过调节压控晶体振荡器外部输入电压而实现输出频率在一定范围内的变化。VCXO最常见的应用是锁相环。
举例,假如压控晶体振荡器的额定输入电压为3.3V,则电压调节范围为0.3~3.0V,频率调节范围请查看相应晶体振荡器规格书相关参数。
下图为带温补功能的晶体振荡器一号脚(Pin1)说明:
压控功能:Vcont (Voltage Control)
接地:GND (Ground)
使/能:ENABLE/DISABLE (开/关)
待机功能:Stand-by Function