參數資料
型號: SI5315-EVB
廠商: Silicon Laboratories Inc
文件頁數: 35/54頁
文件大?。?/td> 0K
描述: BOARD EVAL SI5315 8KHZ-644.53MHZ
應用說明: SI5315/17 Crystal Selection AppNote
標準包裝: 1
主要目的: 計時,時鐘乘法器
嵌入式:
已用 IC / 零件: SI5315
主要屬性: 2 輸入,2 輸出
次要屬性: CML,CMOS,LVDS,LVPECL
已供物品: 板,CD,文檔
Si5315
40
Rev. 1.0
7.1.2. Reference Jitter
Jitter on the reference input has a roughly one-to-one transfer function to the output jitter over the bandwidth
ranging from 100 Hz up to 30 kHz. If a crystal is used on the XA/XB pins, the reference will have low jitter if a
suitable crystal is in use. If the XA/XB pins are connected to an external reference oscillator, the jitter of the
external reference oscillator may contribute significantly to the output jitter.
A typical reference input-to-output jitter transfer function is shown in Figure 21.
Figure 21. Typical XA/XB Reference Jitter Transfer Function
-30
-25
-20
-15
-10
-5
0
5
1
10
100
1000
10000
100000
1000000
Jitter Frequency (Hz)
Jitter Transfer XA/XB Reference to CKOUT
38.88 MHz XO, 38.88 MHz CKIN, 38.88 MHz CKOUT
Jitter
Tr
an
sfer
(dB)
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