參數(shù)資料
型號(hào): 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(yè)數(shù): 14/32頁(yè)
文件大?。?/td> 526K
代理商: L8551
14
Lucent Technologies Inc.
Data Sheet
March 1997
L8551 Low-Power SLIC
Applications
12-2573.e (C)
Figure 12. Basic Loop Start Application Circuit Using T7504-Type Codec
12-2821 (C)
Figure 13. Ring Ground Detection Circuit
R
PROG
66.8 k
R
LCTH
24.9 k
TIP R
PT
20
RING
250 V PROT
R
PR
L7581
RELAY
PT
30
0.1 μF
C
CC
14DI
12
LCTH
3
V
CC
8V
CC
20
PR
16
RTSP
32
R
TS1
402
C
RTS2
0.27 μF
RTSN
31
R
TS2
274 k
R
TSN
2.0 M
V
RING
V
BAT
CF2
18
CF1
19
C
F1
0.47 μF
AGND
24
AGND
25
BGND
27
PROG
V
BAT
15
C
BAT
0.1 μF
VITR
RCVP
RCVN
20
9
10
R
82.5 k
R
T1
35.7 k
CB
2
0.47 μF
R
T2
18.7 k
R
RCV
75 k
R
HB1
90.9 k
VFXIN
VFXIP
R
X
90.9 k
GSX
VFRO
DX
DR
FSX
FSR
MCLK
1/4 T7504
CODEC
PCM
HIGHWAY
CONTROL
AND
CLOCK
+
L8551
SLIC
B1
B0
36
23
CONTROL
INPUTS
NLC
NRDET
34
33
SUPERVISION
OUTPUTS
C
RTS1
0.022 μF
R
TSP
2.0 M
C
0.1 μF
V
BAT
CB1
0.47 μF
+2.4 V
41
R
G
25.5 k
TG
V
CC
RGDET
100 k
RGDET
ICM
0.47 μF
CICM
LOOP START
APPLICATION CIRCUIT
22
21
82.5 k
RICM2
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