- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄2120 > XRT7295ATIW (Exar Corporation)IC RCVR DS3/SONET STS-1 20SOJ PDF資料下載
參數(shù)資料
| 型號： | XRT7295ATIW |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 18/18頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RCVR DS3/SONET STS-1 20SOJ |
| 標準包裝： | 36 |
| 類型： | 接收器 |
| 驅(qū)動器/接收器數(shù)： | 1/1 |
| 規(guī)程： | DS3，STS-1 |
| 電源電壓： | 4.75 V ~ 5.25 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-BSOJ |
| 供應商設備封裝： | 20-SOJ |
| 包裝： | 管件 |
XRT7295AT
9
Rev.1.20
STS-1 SIGNAL REQUIREMENTS AT THE STSX
For STS-1 operation, the cross-connect is referred at the
STSX-1. Table 4 lists the signal requirements at the
STSX-1. Instead of the DS3 isolated pulse template, an
eye diagram mask is specified for STS-1 operation
(TA-TSY-000253). The XRT7295AT correctly decodes
any transmitted signal that meets the mask shown in
Figure 6
at the STSX-1.
Parameter
Specification
Line Rate
51.84 Mbps
Line Code
Bipolar with three-0 substitution (B3ZS)
Test Load
75W±5%
Power Levels
A wide-band power level measurement
at the STSX-1 interface using a low-pass
filter with a 3dB cutoff frequency of at
least 200MHz is within -2.7 dBm and 4.7
dBm.
Table 4. STSX-1 Interconnection Specification
Figure 6. STSX-1 Isolated Pulse Template for Bellcore TA-TSY-000253
1.0
0.8
0.6
0.4
0.2
0
-1.0
-0.5
0
0.5
1.0
1.5
2.0
Time Slots - Normalized To Peak Location
N
o
rm
al
iz
ed
A
m
p
lit
u
d
e
LINE TERMINATION AND INPUT CAPACITANCE
The recommended receive termination is shown in
Figure 3
The 75 W resistor terminates the coaxial cable
with its characteristic impedance. The 0.01mF capacitor
to RIN couples the signal into the receive input without
disturbing the internally generated DC bias level present
on RIN. The input capacitance at the RIN pin is 2.8pF
typical.
LOSS LIMITS FROM THE DSX-3 TO THE RECEIVE
INPUT
The signal at the cross-connect may travel through a
distribution frame, coaxial cable, connector, splitters, and
back planes before reaching the XRT7295AT device.
This section defines the maximum distribution frame and
cable loss from the cross-connect to the XRT7295AT
input.
The distribution frame jack may introduce 0.6 ±0.55 dB
of loss. This loss may be any combination of flat or
shaped (cable) loss.
The maximum cable distance between the point where
the transmitted signal exits the distribution frame jack and
the XRT7295AT device is 450 ft. (see Figure 2.) The
coaxial cable (Type 728A) used for specifying this
distance limitation has the loss and phase characteristics
shown in Figure 7 and Figure 8. Other cable types also
may be acceptable if distances are scaled to maintain
cable loss equivalent to Type 728A cable loss.
TIMING RECOVERY
External Loop Filter Capacitor
Figure 3
shows the connection to an external 0.1mF
capacitor at the LPF1/LPF2 pins. This capacitor is part of
the PLL filter. A non-polarized, low-leakage capacitor
should be used. A ceramic capacitor with the value 0.1mF
± 20% is acceptable.
相關PDF資料 |
PDF描述 |
|---|---|
| XRT7296IWTR-F | IC LINE TX DS3/STS-1 E3 28SOJ |
| XRT7298IW | IC LINE TX DS3/STS-1 E3 28SOJ |
| XRT7300IV | IC LIU E3/DS3/STS-1 SGL 44TQFP |
| XRT83SL216IB-F | IC LIU SH E1 16CH 289STBGA |
| XRT83SL28IV-F | IC LIU SH E1 8CH 144TQFP |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| XRT7295ATIW-F | 功能描述:外圍驅(qū)動器與原件 - PCI -.5V--6.5V temp -45 to 85C RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XRT7295ATIW-F | 制造商:Exar Corporation 功能描述:T3/E3 LIU IC |
| XRT7295ATIWTR | 功能描述:外圍驅(qū)動器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XRT7295ATIWTR-F | 功能描述:外圍驅(qū)動器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XRT7295CTIW | 功能描述:總線接收器 DS3/E3/SONET STS-1 Line Receiver RoHS:否 制造商:Texas Instruments 接收機數(shù)量:4 接收機信號類型:Differential 接口類型:EIA/TIA-422-B, V.11 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-16 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復。