参数资料
型号: WJLXT384LEB1
厂商: INTEL CORP
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: 93/140页
文件大小: 1514K
代理商: WJLXT384LEB1
56
Document Number: 248994
Revision Number: 005
Revision Date: November 28, 2005
Intel LXT384 Octal T1/E1/J1 S/H PCM Transceiver with JA
6.4.4
Transmitter Output Driver Power and Grounds
Each output driver is supplied by its own separate TVCC and TGND pins. The TVCC pins can be
either 3.3 V or 5 V nominal. The LXT384 Transceiver drives either a 75
Ω coaxial cable or a 120Ω
twisted-pair cable.
For output drive short-circuit protection, see Section 6.5, “Line-Interface Protection”.
6.4.4.1
Transmit Output Standard Power Options
The LXT384 Transceiver standard option uses a 1:2 transformer with two RT = 11Ω resistors. This
power option has more margin for return loss, compared to the low-power option discussed in the
following section.
6.4.4.2
Transmitter Output Low-Power Options
The LXT384 Transceiver has a low-power option that meets all other specifications, with a built-in
safety margin. This option allows a different turns ratio so that power can be saved on the LXT384
Transceiver power dissipation. To achieve this low-power option, select the turns ratio to 1:1.7 and
change the RT resistor to 10Ω. (See Figure 6 and Table 21.)
相关PDF资料
PDF描述
WJLXT384LEB1 DATACOM, PCM TRANSCEIVER, PQFP144
WJLXT385LEB1 DATACOM, PCM TRANSCEIVER, PQFP144
WJLXT385LEB1 DATACOM, PCM TRANSCEIVER, PQFP144
WJLXT386LEB2 DATACOM, PCM TRANSCEIVER, PQFP100
WJLXT386LEB2 DATACOM, PCM TRANSCEIVER, PQFP100
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