參數(shù)資料
型號(hào): XRT83SL28IV
廠商: EXAR CORP
元件分類: 數(shù)字傳輸電路
英文描述: 8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
中文描述: DATACOM, PCM TRANSCEIVER, PQFP144
封裝: 20 X 20 MM, 1.40 MM HEIGHT, TQFP-144
文件頁(yè)數(shù): 25/47頁(yè)
文件大?。?/td> 377K
代理商: XRT83SL28IV
xr
REV. 1.0.0
XRT83SL28
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
23
2.8
The output stage of the transmit path generates standard bipolar signals to the line for both E1 (75 Ohm)
coaxial cable and E1 (120 Ohm) twisted pair. The XRT83L28 has built-in output impedance matching for both
75 Ohm and 120 Ohm operations. This eliminates the need to change any external components while
switching from 75 Ohm to 120 Ohm operation. The transmitter interface only requires one 0.68
μ
F DC blocking
capacitor with a 1:2 transformer as shown in Figure 17.
F
IGURE
17. T
YPICAL
C
ONNECTION
D
IAGRAM
U
SING
I
NTERNAL
T
ERMINATION
Line Termination (TTIP/TRING)
T
TIP
T
RING
XRT83SL28 LIU
1:2
Internal Impedance
Line Interface E1
C=0.68uF
One Bill of Materials
Transmitter
Output
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XRT83VSH28 8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
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