參數(shù)資料
型號: L7554
廠商: Lineage Power
英文描述: Low-Power SLIC(低功耗用戶線接口(SLIC))
中文描述: 低功耗用戶接口(低功耗用戶線接口電路(SLIC))
文件頁數(shù): 19/28頁
文件大?。?/td> 476K
代理商: L7554
Data Sheet
March 1997
Lucent Technologies Inc.
19
L7554 Low-Power SLIC
Applications
(continued)
Characteristic Curves
(continued)
Note: V
BAT
= –48 V; I
LIM
= 22 mA; R
DC1
= 113
.
12-3052 (C)
Figure 21. 7551 Typical SLIC Power Dissipation vs.
Loop Resistance
12-2825 (C)
Figure 22. Power Derating
12-3019 (C)
Figure 23. Longitudinal Balance Resistor Mismatch
Requirements
12-3021 (C)
Figure 24. Longitudinal Balance vs. Protection
Resistor Mismatch
LOOP RESISTANCE, R
LOOP
(
)
0
500
1000
2000
0
1000
1500
1500
500
S
AMBIENT TEMPERATURE, T
A
(
°
C)
20
40
60
140
180
0
500
1000
1500
2000
80
100
120
160
STILL AIR
47
°
C/W
300 cu. ft./ min.
36
°
C/W
0
8
0
20
60
100
120
PROTECTION RESISTOR VALUE (
)
7
6
5
4
3
2
1
40
80
49 dB, RP MATCHED TO 1.5
58 dB, RP MATCHED
TO 0.5
P
40
60
0.0
0.5
1.5
2.5
PROTECTION RESISTOR MISMATCH (
)
55
50
45
1.0
2.0
L
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