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LMK04803B的试验结果



LMK04803B的Datasheet里:

f=245.76MHz,Offset=1KHz,-122.5dbc/Hz

                            Offset=10KHz,-132.9dbc/Hz

 

我自己用LMK04803B做了1块时钟板,生成的时钟是LVPECL格式,用Agilent的EXA  N9010A作为测试仪器,测得的结果如下:

f=400MHz,-10dbm

f=400MHz   +/-   2.5KHz,-80dbm

那么,我的时钟质量与LMK04803B的Datasheet给出的数据相比,差距有多大呢?