xrt5897 Exar Corporation, xrt5897 Datasheet - Page 12

• Manufacturer Part Number: xrt5897
• Description: Xrt5897 -seven-channel E1 Line Interface
• Manufacturer: Exar Corporation

RETURN LOSS SPECIFICATIONS
The following transmitter and receiver return loss specifications are based on a typical 1:2CT ratio transformer.
Transmit Return Loss Notes
D Output transformer ratio is 1:2 (return loss exceeds
Receiver Return Loss Notes
D Input transformer ratio is 1:2 CT.
D Transformer center tap is grounded.
XRT5897
ETSI 300 166 with this transformer).
Rev. 1.11
2.048MHz to 3.072MHz
2.048MHz to 3.072MHz
102kHz to 2.048MHz
102kHz to 2.048MHz
Frequency Range
Frequency Range
51kHz to 102kHz
51kHz to 102kHz
Table 3. Transmitter Return Loss Specification
Table 4. Receiver Return Loss Specification
Min.
Min.
16
16
16
22
18
11
75W
75W
Typ.
Typ.
12
22
22
18
28
34
26
D For both 75
D Each half of transformer secondary is terminated
sistors are connected between each end of the
transformer primary and the XRT5897 TTIP and
TRING pins.
with 150
eration (resistors are 1% tolerance).
W
Min.
Min.
for 75
10
10
10
15
22
20
W
and 120
W
120W
120W
operation, or 240
W
applications, 9.1
Typ.
Typ.
15
15
14
18
25
30
W
for 120
W
, 1% re-
Unit
Unit
dB
dB
dB
dB
dB
dB
W
op-