L9214A/G
Low-Cost Ringing SLIC
Preliminary Data Sheet
October 2001
Architecture Diagram
AGND VCC BGND VBAT2 VBAT1
IPROG
NSTAT
RTFLT DCOUT
IREF
CURRENT
LIMIT
RING
TRIP
AND
VITR
POWER/BATTERY SWITCH
INRUSH
CONTROL
X20
LOOP
CLOSURE
AAC
REFERENCE
CIRCUIT
COMMON-
MODE
CURRENT
DETECTOR
ICM
TXI
ITR
VTX
RECTIFIER
X1
TRGDET
–
(ITR/308)
VREF
VTX
AX
CF2
+
–
RFT
PT
18 Ω
X1
ITR
+
CF1
FB2
FB1
VBAT1 VBAT2
TIP/RING
CURRENT
SENSE
–
RCVN
RCVP
ITR
+
–
GAIN
RFR
PR
+
18 Ω
ac INTERFACE
9214A GAIN = 4
9214G GAIN = 1
VBAT1 VBAT2
PARALLEL
DATA
INTERFACE
B0 B1 B2 B3
12-3530.C (F)
Figure 1. Architecture Diagram
Agere Systems Inc.
7
AGERE [ AGERE SYSTEMS ]
