lxt351 Intel Corporation, lxt351 Datasheet - Page 30

• Manufacturer Part Number: lxt351
• Description: T1/e1 Short Haul Transceiver With Crystal-less Jitter Attenuation
• Manufacturer: Intel Corporation

LXT351 — T1/E1 Short Haul Transceiver with Crystal-less Jitter Attenuation
30
Tx/Rx
1. Some ETSI applications may require a 2.3 kV dielectric breakdown voltage.
2. Some applications require transformers to guarantee performance in extended temperature range (-40° to +85° C) ETSI
Rx
Tx
applications require a dielectric breakdown voltage of 3000 V
Table 16. Transmit Return Loss (2.048 Mbps)
Table 17. Transmit Return Loss (1.544 Mbps)
Table 18. Transformer Specifications
1.544/2.048
1.544/2.048
Frequency
1.544
2.048
MHz
1. A 1:1.15 transmit transformer keeps the total transceiver
2. Refer to
EC3-1
EC3-1
011
000
power dissipation at a low level, a 0.47 F DC blocking
capacitor must be placed on TTIP or TRING.
2
Turns
1:1.15
Ratio
1:2.3
Table
1:2
1:1
Xfrmr/Rt
1:2.3/9.1
Xfrmr/Rt
1:1.15
9.1
9.1
0.0
1:2/
1:2/
8.
1
/
H (minimum)
Inductance
Primary
R
R
120
120
L
75
600
600
600
600
100
100
L
( )
( )
C
C
L
470
470
470
L
0
0
0
(pF)
470
470
0
0
(pF)
Inductance
Leakage
(max)
RMS
0.80
0.80
0.80
1.10
H
Return Loss
.
Return Loss
(dB)
(dB)
14
16
12
13
13
16
16
17
2
2
Interwinding
Capacitance
(max)
pF
60
60
60
60
(maximum)
1.70 sec
1.20 sec
1.70 sec
1.10 sec
0.90 pri
0.70 pri
1.10 pri
1.0 pri
DCR
(3000 V
(3000 V
(3000 V
Breakdown
1500 V
1500 V
1500 V
(minimum)
Dielectric
1500 V
Datasheet
V
RMS
RMS
RMS
RMS
RMS
RMS
RMS
1
2
2
2
)
)
)