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參數資料
| 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： | 35/46頁 |
| 文件大?。?/td> | 842K |
| 代理商： | L8560 |
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Lucent Technologies Inc.
35
Data Sheet
April 2000
L8560 Low-Power SLIC with Ringing
Applications
(continued)
Design Considerations
(continued)
Figure 36 shows the ground start application.
12-3547.a.c (F)
Figure 36. Ground Start Application Circuit
Table 12. Parts List for Loop Start with Bused Ringing and Ground Start Applications
* Contact your Lucent Technologies account representative for protector recommendations. Choice of this (and all) component(s) should be
evaluated and confirmed by the customer prior to use in any field or laboratory system. Lucent does not recommend use of this part in the
field without performance verification by the customer. This device is suggested by Lucent for customer evaluation. The decision to use a
component should be based solely on customer evaluation.
Required for L8560A/L8560C version only.
Name
Value
Function
Integrated Circuits
SLIC
Protector
Ringing Relay
Codec
Fault Protection
R
PT
R
PR
Power Supply
C
BAT1
C
BAT2
C
CC
C
F1
C
F2
C
BS
C
ST
R
ST
C
TG
dc Profile
R
PROG
—
Subscriber line interface circuit (SLIC).
Secondary protection.
Switches ringing signals.
First-generation codec.
Crowbar protector*
L7581
T7504
50
PTC or fusible
50
PTC or fusible
Protection resistor.
Protection resistor.
0.1
μ
F, 20%, 100 V
0.1
μ
F, 20%, 100 V
0.1
μ
F, 20%, 10 V
0.47
μ
F, 20%, 100 V
0.1
μ
F, 20%, 100 V
0.22
μ
F, 20%, 100 V
0.1
μ
F, 20%, 10 V
100
, 1%, 1/8 W
27 pF, 20%, 10 V
V
BAT
filter capacitor.
V
BAT
filter capacitor.
V
CC
filter.
With C
F2
, improves idle-channel noise.
With C
F1
, improves idle-channel noise.
Slows battery switch transition.
Loop stability.
Loop stability.
Loop stability.
14 k
, 1%, 1/8 W
Sets dc loop current.
V
CC
0.47
μ
F
C
ICM
GROUND START
APPLICATION CIRCUIT
R
GDET
ICM
R
GDET
100 k
R
ICM2
71.5 k
R
GDET
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