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LXT381II 数据表(PDF) 29 Page - Intel Corporation

部件名 LXT381II
功能描述  Octal E1 Line Interface Unit
PDF  36 Pages
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制造商  INTEL [Intel Corporation]
网页  http://www.intel.com
标志 INTEL - Intel Corporation

LXT381II 数据表(HTML) 29 Page - Intel Corporation

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Octal E1 Line Interface — LXT381
Datasheet
29
Difference between pulse sequences
-
-
-
200
mV
For 17 consecutive
pulses
Pulse width ratio of the positive and negative pulses
-
0.95
-
1.05
-
At the nominal half
amplitude
Transmit transformer turns ratio for 75/120
Ω
characteristic impedance
--
1:2
-
-
Rt = 11
Ω ± 1%
Transmit return loss
75
Ω coaxial 1
51kHz to 102 kHz
102 kHz to 2.048 MHz
2.048 MHz to 3.072 MHz
-
15
15
15
17
18
17
-
dB
dB
dB
Using components in the
LXD381 evaluation
board
Transmit return loss,
120
Ω twisted pair
cable 1
51kHz to 102 kHz
102 kHz to 2.048 MHz
2.048 MHz to 3.072 MHz
-
15
15
15
18
19
18
-
dB
dB
dB
Using components in the
LXD381 evaluation
board
Transmit intrinsic jitter; 20Hz to 100kHz
-
-
0.030
0.050
U.I.
Tx path TCLK is jitter
free
Table 12. Receive Transmission Characteristics
Parameter
Sym
Min.
Typ.
Max.
Unit
Test Condition
Permissible cable attenuation
-
-
-
12
dB
@1024 kHz
Receiver dynamic range
DR
0.5
-
-
Vp
Signal to noise interference margin
S/I
-15
-
-
dB
Per G.703, O.151 @ 6 dB
cable attenuation
Data decision threshold
SRE
43
50
57
%
Rel. to peak input voltage
Data receiver squelch level
-
-
150
-
mV
Loss of signal threshold
-
-
200
-
mV
LOS hysteresis
-
-
50
-
mV
Receiver input impedance
-
-
70
-
k
Ω
@ 1.024 MHz
Input termination resistor tolerance
-
-
±1
%
Input return
loss1
51 kHz - 102 kHz
102 - 2048 kHz
2048kHz - 3072 kHz
-
20
20
20
--
dB
dB
dB
Measured against nominal
impedance
LOS delay time
-
-
30
-
µs
LOS reset
-
10
-
255
marks
1. Guaranteed by design and other correlation methods.
Table 11. Transmit Transmission Characteristics (Continued)
Parameter
Sym
Min.
Typ.
Max.
Unit
Test Condition
1. Guaranteed by design and other correlation methods.



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