XRT82D20 Datasheet, PDF (18/27 Pages) Exar Corporation – SINGLE CHANNEL E1 LINE INTERFACE UNIT

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SINGLE CHANNEL LINE INTERFACE UNIT XRT82D20
REV. 1.0.7
FIGURE 12. RECOMMENDED SCHEMATIC FOR TRANSFORMER-COUPLING THE XRT82D20 TO THE LINE FOR 75 Ω
APPLICATIONS AND 5 V OPERATION ONLY
75 Ω Coax
75 Ω
Signal
Source
75 Ω Coax
R Load
75 Ω
1:2
1.36 : 1
270 Ω
270 Ω
RTIP
Rx Input
RRING
15.4 Ω
15.4 Ω
TTIP
Tx Output
TRING
RPOS/RData
RNEG/LCV
RClk
TVDD
AVDD
10 µF
TxLEV
TGND
AGND
+5 V
0.11 µF
TNEG/CODE
TPOS/TData
TClk
16