參數(shù)資料
型號: SI5017-D-GM
廠商: Silicon Laboratories Inc
文件頁數(shù): 8/26頁
文件大?。?/td> 0K
描述: IC CLOCK/DATA RECOVERY 28MLP
標準包裝: 60
系列: DSPLL®
類型: 時鐘和數(shù)據(jù)恢復(CDR)
PLL:
主要目的: SONET/SDH,ATM 應用
輸入: 時鐘
輸出: CML
電路數(shù): 1
比率 - 輸入:輸出: 1:2
差分 - 輸入:輸出: 是/是
頻率 - 最大: 2.7GHz
電源電壓: 3.135 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-VFQFN 裸露焊盤
供應商設備封裝: 28-MLP-EP(5x5)
包裝: 管件
其它名稱: 336-1279
Si5017
16
Rev. 1.5
4.17. Differential Input Circuitry
The Si5017 provides differential inputs for both the high-speed data (DIN) and the reference clock (REFCLK)
inputs. An example termination for these inputs is shown in Figures 10 and 11, respectively. In applications where
direct dc coupling is possible, the 0.1 F capacitors may be omitted. (LOS operation is only guaranteed when ac
coupled.) The data input limiting amplifier requires an input signal with a differential peak-to-peak voltage as
specified in Table 2 on page 7 to ensure a BER of at least 10–12. The REFCLK input differential peak-to-peak
voltage requirement is also specified in Table 2.
Figure 10. Input Termination for REFCLK (ac coupled)
Figure 11. Input Termination for DIN (ac coupled)
Clock source
Si5017
0.1
F
0.1
F
Zo = 50
Zo = 50
RFCLK +
RFCLK –
2.5 k
2.5 k
10 k
10 k
100
GND
2.5 V (±5%)
TIA
Si5017
0.1
F
0.1
F
Zo = 50
Zo = 50
DIN+
DIN–
5 k
50
GND
7.5 k
50
2.5 V (±5%)
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