参数资料
型号: WJLXT385LEB1
厂商: CORTINA SYSTEMS INC
元件分类: 数字传输电路
英文描述: DATACOM, PCM TRANSCEIVER, PQFP144
封装: ROHS COMPLIANT, LQFP-144
文件页数: 10/138页
文件大小: 1545K
代理商: WJLXT385LEB1
107
Document Number: 249252
Revision Number: 006
Revision Date: 19-Jan-2006
IntelLXT385 Octal E1 S/H PCM Transceiver with JA
Table 59 lists the AC characteristics for the LXT385 ransceiver receiver.
Table 59. Intel
LXT385 Transceiver AC Receiver Characteristics
Parameter
Min.
Typ.
Max.
Unit
Test Condition
Permissible cable attenuation
12
dB
Tested at 1024 kHz
Signal-to-noise interference margin,
per ITU G.703, O.151
-15
dB
6 dB cable
attenuation
Data decision threshold -
Relative to peak input voltage
43
50
57
%
Data slicer minimum threshold
150
mV
Differential receiver input impedance
70
k
Ω
Tested at 1024 kHz
Common-mode input impedance
20
k
Ω
Receiver intrinsic wide-band jitter, RCLK output
0.04
0.07
U.I.
Loss of Signal (LOS) Parameters
LOS threshold
200
mV
LOS hysteresis
50
mV
LOS delay time in data-recovery mode
30
s
LOS reset - 12.5% ones’ density
(4 marks in a sliding 32-bit period)
12.5
%
LOS reset - Data-recovery mode
10
255
marks
Consecutive zeroes before LOS -
G.755 Recommendation
32
spaces
Consecutive zeroes before LOS -
ETSI 300 233 Specification
2048
spaces
Low-Limit Input - Jitter Tolerance
1, per G.735 Recommendation Note 1
1 to 20 Hz
36
U.I.
6 dB cable
attenuation
20 Hz to 2.4 kHz
1.5
U.I.
18 to 100 kHz
0.2
U.I.
Intel LXD385 Transceiver Evaluation Board - Receive Return Loss2
51 to 102 kHz
20
dB
102 to 2048 kHz
20
dB
2048 to 3072 kHz
20
dB
Receiver Path Delay
Bipolar mode
1
U.I.
Jitter attenuator
disabled
Unipolar mode
6
U.I.
1. Guaranteed by design and other correlation methods.
2. Measured against nominal impedance using LXD385 transceiver evaluation board components.
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