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| 型号： | LUCL9219GAR-DT |
| 英文描述： | Low-Cost Line Interface with Reverse Battery and Dual Current Limit |
| 中文描述： | 低成本线接口，具有反向电池和双电流限制 |
| 文件页数： | 23/30页 |
| 文件大小： | 397K |
| 代理商： | LUCL9219GAR-DT |
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Agere Systems Inc.
3
Data Sheet
November 2001
with Reverse Battery and Dual Current Limit
L9219A/G Low-Cost Line Interface
Description (continued)
Figure 1. Functional Diagram
–
+
–
+
–
A = 1
A = –1
POWER CONDITIONING AND REFERENCE
BG
N
D
AG
ND
IPR
O
G
V
CC
CF
1
PT
PR
RTSN
RTSP
LCTH
RING TRIP DETECTOR
LOOP CLOSURE DETECTOR
BATTERY FEED
STATE CONTROL
B0
RCVP
RCVN
B1
NSTAT
FB1
+
–
TIP/RING
CURRENT
SENSE
B2
A VERSION GAIN = 3.93
G VERSION GAIN = 1
FORWARD AND REVERSE BATTERY
DCOUT
VTX
TG
TXI
VITR
–
+
AX
RECTIFIER
3
AAC
β = 9.66
CF
2
FB
2
β = 41 V/A
TSD
THERMAL
SHUTDOWN
12-3557 (F).c
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