L9219G データシートの表示（PDF） - Agere -> LSI Corporation
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L9219G Datasheet PDF : 30 Pages
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Data Sheet
November 2001
Description (continued)
L9219A/G Low-Cost Line Interface
with Reverse Battery and Dual Current Limit
POWER CONDITIONING AND REFERENCE
FORWARD AND REVERSE BATTERY
+
AX
– β = 41 V/A
RECTIFIER
3
DCOUT
VTX
TG
TXI
AAC
VITR
–
PT
A=1
β = 9.66
+
TIP/RING
–
RCVN
CURRENT
SENSE
+
RCVP
+
A VERSION GAIN = 3.93
PR
A = –1
G VERSION GAIN = 1
–
LOOP CLOSURE DETECTOR
LCTH
RTSP
RTSN
RING TRIP DETECTOR
BATTERY FEED
STATE CONTROL
+
–
+
–
THERMAL
SHUTDOWN
B0
B1
B2
TSD
NSTAT
Figure 1. Functional Diagram
12-3557 (F).c
Agere Systems Inc.
3
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