参数资料
型号: LXT350PE
英文描述: PCM TRANSCEIVER|SINGLE|CEPT PCM-30/E-1|CMOS|LDCC|28PIN|PLASTIC
中文描述: 的PCM收发器|单|优税PCM-30/E-1 |的CMOS | LDCC | 28脚|塑料
文件页数: 34/50页
文件大小: 1197K
代理商: LXT350PE
LXT350
T1/E1 Short Haul Transceiver with Crystal-less Jitter Attenuation
34
Datasheet
Table 18. Transmit Return Loss (2.048 Mbps)
EC3-1
Xfrmr/Rt
R
L
(
)
C
L
(pF)
Return Loss
(dB)
000
1:2/
9.1
75
0
14
470
16
120
0
12
470
13
1:2.3/9.1
120
0
13
470
16
Table 19. Transmit Return Loss (1.544 Mbps)
EC3-1
Xfrmr/Rt
R
L
(
)
C
L
(pF)
Return Loss
(dB)
011
2
1:2/
9.1
100
0
16
470
17
1:1.15
1
/
0.0
100
0
2
470
2
1. A 1:1.15 transmit transformer keeps the total transceiver
power dissipation at a low level, a 0.47
μ
F DC blocking
capacitor must be placed on TTIP or TRING.
2. Refer to
Table 10
.
Table 20. Transformer Specifications
Tx/Rx
Frequency
MHz
Turns Ratio
Primary
Inductance
μ
H
(minimum)
Leakage
Inductance
μ
H
(max)
Interwinding
Capacitance
pF
(max)
DCR
(maximum)
Dielectric
1
Breakdown
V
(minimum)
Tx
1.544
1:1.15
600
0.80
60
0.90 pri
1.70 sec
1500 V
RMS
2.048
1:2.3
600
0.80
60
0.70 pri
1.20 sec
1500 V
RMS
2
(3000 V
RMS
)
1.544/2.048
1:2
600
0.80
60
1.0 pri
1.70 sec
1500 V
RMS
2
(3000 V
RMS
)
Rx
1.544/2.048
1:1
600
1.10
60
1.10 pri
1.10 sec
1500 V
RMS
2
(3000 V
RMS
)
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
applications require a dielectric breakdown voltage of 3000 V
RMS
.
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