參數(shù)資料
型號(hào): XRT91L34IV
廠商: Exar Corporation
文件頁(yè)數(shù): 15/38頁(yè)
文件大?。?/td> 0K
描述: IC MULTIRATE CDR QUAD 128LQFP
標(biāo)準(zhǔn)包裝: 72
類型: 時(shí)鐘和數(shù)據(jù)恢復(fù)(CDR),扇出緩沖器(分配),多路復(fù)用器
PLL:
主要目的: SONET/SDH,STS,STM
輸入: LVDS,LVPECL
輸出: LVDS,LVPECL
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: 622.08MHz
電源電壓: 1.71 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 128-LQFP
供應(yīng)商設(shè)備封裝: 128-LQFP(14x14)
包裝: 托盤
XRT91L34
22
QUAD CHANNEL MULTIRATE STS-12/3/1 AND STM-4/1/0 SONET/SDH CDR
REV. 1.0.1
3.1.2
Rx Jitter Transfer
Jitter Transfer function is defined as the ratio of jitter on the output relative to the jitter applied on the input
versus frequency. It displays the ability of the component unit to attenuate jitter at the specified injected jitter
frequencies. There are two distinct characteristics in jitter transfer, jitter gain (jitter peaking) defined as the
highest ratio above 0dB and jitter transfer bandwidth. The overall jitter transfer bandwidth is controlled by a low
bandwidth loop.
The XRT91L34 meets the latest jitter transfer characteristics as shown in the Figure 14, Figure 15, and
Figure 16. The XRT91L34 complies with STS-12/3/1 and STM-4/1/0 jitter transfer masks set forth by Bellcore
GR-253 Core section 5.6.2.1 and ITUT G.783 section 15.1.3 as defined in G.825.
FIGURE 14. XRT91L34 MEASURED JITTER TRANSFER AT 51.84 MBPS STS-1/STM-0
FIGURE 15. XRT91L34 MEASURED JITTER TRANSFER AT 155.52 MBPS STS-3/STM-1
Jitter Transfer, GR253H, OC-1 (52Mbps)
-30
-25
-20
-15
-10
-5
0
5
1E+1
1E+2
1E+3
1E+4
1E+5
1E+6
Frequuency (Hz)
G
a
in
(d
B
)
Mask
Jitter Transf er
Jitter Transfer, GR253H, OC-3 (155 Mbps)
-30
-25
-20
-15
-10
-5
0
5
1E+1
1E+2
1E+3
1E+4
1E+5
1E+6
1E+7
Frequuency (Hz)
G
a
in
(d
B
)
Mask
Jitter Transf er
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