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XRT82D20 Datasheet, PDF (23/27 Pages) Exar Corporation – SINGLE CHANNEL E1 LINE INTERFACE UNIT | |||
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XRT82D20 SINGLE CHANNEL LINE INTERFACE UNIT
REV. 1.0.7
áç
FIGURE 17. CAPACITIVELY-COUPLING THE RECEIVE SECTION FOR 120 ⦠APPLICATION AND 5V SUPPLY
120 ⦠Twisted Pair
120 â¦
Signal
Source
30.1 â¦
30.1 â¦
0.1 µF
60.4 â¦
RTIP
Rx Input
0.1 µF
RRING
120 ⦠Twisted Pair
R Load
120 â¦
1.36:1
26.1 â¦
26.1 â¦
TTIP
Tx Output
TRING
RPOS/RData
RNEG/LCV
RClk
TVDD
AVDD
10 µF
TxLEV
TGND
AGND
+5 V
0.1 µF
TNEG/CODE
TPOS/TData
TClk
NOTE: Resistive divider attenuates the input signal by one-
half for both 75 ⦠and 120 ⦠applications.
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