LMK04803的CPOUT2

参照LMK04800.PDF里的FIGURE19，如何选择CPOUT2的外接电容（LF2_C1、LF2_C2）、电阻（LF2_R2）呢 ?

WEN JAMES：

回复 Nick Dai:

外部滤波环路与内部滤波环路的差别何在呢

Kailyn Chen：

回复 WEN JAMES:

内部滤波是针对PLL2的，而外部滤波是针对PLL1的，

The external loop filter for PLL1 should be narrow to provide an ultra clean reference clock from the external VCXO or crystal to the OSCin/OSCin* pins for PLL2.

Integrated internal filter: The LMK048xx features programmable 3rd and 4th order loop filter poles for PLL2.