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參數(shù)資料
| 型號(hào)： | L7557 |
| 廠商： | Lineage Power |
| 英文描述： | Low-Power SLICs （electronic subscriber loop interface circuits ）with Battery Switch(帶電池開關(guān)的低功耗用戶環(huán)路線接口電路（SLIC）) |
| 中文描述： | 低功耗SLIC組件（電子用戶環(huán)路接口電路）與電池開關(guān)（帶電池開關(guān)的低功耗用戶環(huán)路線接口電路電路（SLIC）） |
| 文件頁(yè)數(shù)： | 19/28頁(yè) |
| 文件大?。?/td> | 753K |
| 代理商： | L7557 |
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Lucent Technologies Inc.
19
Data Sheet
January 2000
with Battery Switch
L7556, L7557 Low-Power SLICs
Applications
(continued)
Characteristic Curves
(continued)
12-3052.a (F)
Notes:
V
BAT1
= –48 V.
V
BAT2
= –28 V.
I
LIM
= 22 mA.
R
dc1
= 115
.
Figure 21. Typical SLIC Power Dissipation vs.
Loop Resistance
12-2825.c (F)
Figure 22. Power Derating
12-2559.b (F)
Figure 23. Longitudinal Balance Resistor Mismatch
Requirements
12-3021 (F)
Figure 24. Longitudinal Balance vs. Protection
Resistor Mismatch
LOOP RESISTANCE, R
LOOP
(W)
0
500
1000
2000
0
1000
1500
1500
500
S
BS = 1
L7557
BS = 0
L7556
BS = 0
AMBIENT TEMPERATURE, T
A
(
°
C)
20
40
60
140
180
0
500
1000
1500
2000
80
100
120
160
P
60
°
C/W
0
2
3
4
7
8
0
20
40
60
PROTECTION RESISTOR VALUE (
)
P
100
1
6
5
120
80
49 dB, RP MATCHED TO 1.5
58 dB,
RP MATCHED
TO 0.5
60
55
50
45
40
0.0
0.5
1.0
1.5
2.0
2.5
PROTECTION RESISTOR MISMATCH (
)
L
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