参数资料
型号: WJLXT384LEB1
厂商: CORTINA SYSTEMS INC
元件分类: 数字传输电路
英文描述: DATACOM, PCM TRANSCEIVER, PQFP144
封装: 20 X 20MM, ROHS COMPLIANT, LQFP-144
文件页数: 28/140页
文件大小: 1514K
代理商: WJLXT384LEB1
123
Document Number: 248994
Revision Number: 005
Revision Date: November 28, 2005
Intel LXT384 Octal T1/E1/J1 S/H PCM Transceiver with JA
12.0
Line-Interface-Unit Circuit Specifications
Table 72 lists specifications for the LIU circuits with which the LXT384 Transceiver is designed to
operate. (For a diagram of an LIU circuit to be used with the LXT384 Transceiver, see Figure 6 in
Table 73 lists specifications for transformers with which the LXT384 Transceiver is designed to
operate in an LIU circuit.
Table 72. Line-Interface-Unit Circuit Specifications
Parameter
Minimum
Typical
Maximum
Units
Termination Resistor Tolerance
RRING/RTIP termination resistor RR - Receiver Resistor
75
Ω Coaxial Cable
9.3
Ω ± 1%
Ω
120
Ω Twisted Pair Cable
15.0
Ω ± 1%
Ω
TRING/TTIP termination resistor RT - Transmitter Resistor
75
Ω Coaxial Cable
8.7
Ω ± 1%
9.1
Ω ± 1%
Ω
120
Ω Twisted Pair Cable
10.5
Ω ± 1%
11.0
Ω ± 1%
Ω
Table 73. Intel LXT384 Transceiver Transformer Specifications
Tx/Rx
Turns Ratio2
Primary
Inductance
mH
(min.)
Leakage
Inductance
μH
(max.)
Interwinding
Capacitance
pF
(max.)
DCR
Ω
(max.)
Dielectric Breakdown
Voltage
V1
(min.)
TX
1:2
1.2
0.60
60
0.70 pri
1.20 sec
1500 Vrms
RX
1:2
1.2
0.60
60
1.10 pri
1.10 sec
1500 Vrms
1. This parameter is application dependent.
2. LIU side: Line side. Transformer turns ratio accuracy is
± 2%.
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