參數(shù)資料
型號: L8560
英文描述: Low-Power SLIC with Ringing
中文描述: 低功耗振鈴用戶接口
文件頁數(shù): 20/46頁
文件大?。?/td> 842K
代理商: L8560
Data Sheet
April 2000
L8560 Low-Power SLIC with Ringing
20
Lucent Technologies Inc.
Applications
(continued)
Characteristic Curves
(continued)
12-3015 (F)
Note: V
BAT1
= –48 V, I
TR
= 1.2 x 10
–3
R
LCTH
(k
).
Figure 16. Loop Closure Program Resistor
Selection
12-3016.f (F)
Note: Tip lead is open; V
BAT1
= –48 V.
Figure 17. Ring Ground Detection Programming
12-3050.k (F)
Note: V
BAT1
= –48 V; I
LIM
= 22 mA; R
dc1
= 55
.
Figure 18. Loop Current vs. Loop Voltage
12-3051 (F)
Note: V
BAT1
= –48 V; I
LIM
= 22 mA; R
dc1
= 55
.
Figure 19. Loop Current vs. Loop Resistance
0
5
20
25
0
10
20
30
60
LOOP CLOSURE THRESHOLD RESISTOR, R
LCTH
(k
)
50
15
10
40
O
(
0
5
20
35
0
20
40
60
140
100
15
10
80
25
30
120
RING GROUND CURRENT
DETECTION RESISTOR, R
ICM
(k
)
T
0
10
20
50
0
20
30
40
50
LOOP VOLTAGE (V)
30
40
10
L
1
12.5 k
–1
R
dc1
I
LIM
TESTED
I
LIM
ONSET
LOOP RESISTANCE, R
LOOP
(
)
0
500
1000
2000
0
20
30
40
50
1500
10
L
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