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參數(shù)資料
| 型號： | L8551 |
| 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)： | 15/32頁 |
| 文件大?。?/td> | 526K |
| 代理商： | L8551 |
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Lucent Technologies Inc.
15
Data Sheet
March 1997
L8551 Low-Power SLIC
Applications
(continued)
Table 10. Parts List for Loop Start Applications
Name
Value
Function
Integrated Circuits
SLIC
Protector
Ringing Relay
Codec
Overvoltage Protection
R
PT
R
PR
Power Supply
C
BAT1
C
CC
C
F1
C
F2
dc Profile
R
PROG
ac Characteristics
C
B1
C
B2
R
T1
R
RCV
R
GP
L8551
250 V Thyristor type
L7581
T7504
Subscriber loop interface circuit (SLIC).
Secondary protection.
Switches ringing signals.
First-generation codec.
20
, Fusible
20
, Fusible
Protection resistor.
Protection resistor.
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
V
BAT
filter capacitor.
V
CC
filter capacitor.
With C
F2
, improves idle-channel noise.
With C
F1
, improves idle-channel noise.
66.8 k
, 1%, 1/8 W
Sets dc loop current limit.
0.47
μ
F, 20%, 100 V
0.47
μ
F, 20%, 100 V
35.7 k
, 1%, 1/8 W
75 k
, 1%, 1/8 W
82.5 k
, 1%, 1/8 W
ac/dc separation capacitor.
ac/dc separation capacitor.
With R
GP
and R
RCV
, sets ac termination impedance.
With R
GP
and R
T1
, sets receive gain.
With R
T1
and R
RCV
, sets ac termination impedance
and receive gain.
With R
X
, sets transmit gain in codec.
With R
T2
, sets transmit gain in codec.
Sets hybrid balance.
Sets transmit gain of SLIC.
R
T2
R
X
R
HB1
R
G
18.7 k
, 1%, 1/8 W
90.9 k
, 1%, 1/8 W
90.9 k
, 1%, 1/8 W
25.5 k
, 1%, 1/8 W
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