參數(shù)資料
型號(hào): XRT75R12IB-L
廠商: Exar Corporation
文件頁(yè)數(shù): 36/90頁(yè)
文件大小: 0K
描述: IC LIU E3/DS3/STS-1 12CH 420TBGA
標(biāo)準(zhǔn)包裝: 40
類型: 線路接口裝置(LIU)
驅(qū)動(dòng)器/接收器數(shù): 12/12
規(guī)程: DS3,E3,STS-1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 420-LBGA 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝: 420-TBGA(35x35)
包裝: 托盤(pán)
XRT75R12
38
REV. 1.0.4
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
5.1.2
E3 Jitter Tolerance Requirements
ITU-T G.823 standard specifies that the clock and data recovery unit must be able to tolerate jitter up to certain
specified limits. Figure 27 shows the tolerance curve.
As shown in the Figures above, in the jitter tolerance measurement, the dark line indicates the minimum level
of jitter that the E3/DS3/STS-1 compliant component must tolerate. Table 10 below shows the jitter amplitude
versus the modulation frequency for various standards.
FIGURE 26. INPUT JITTER TOLERANCE FOR DS3/STS-1
FIGURE 27. INPUT JITTER TOLERANCE FOR E3
0.01
0.03
15
1.5
0.3
2
20
0.15
J
IT
T
E
R
A
M
P
L
IT
U
D
E
(U
I p
p
)
JITTER FREQUENCY (kHz)
10
5
0.3
100
0.1
GR-253
STS-1
GR-499
Cat II
GR-499
Cat I
64
41
XRT75R12
0.1
1.5
1
10
J
IT
T
E
R
A
M
P
L
IT
U
D
E
(U
I p
p
)
JITTER FREQUENCY (kHz)
800
ITU-T G.823
64
10
0.3
XRT75R12
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