le5712 Zarlink Semiconductor, le5712 Datasheet - Page 18

• Manufacturer Part Number: le5712
• Description: Dual Subscriber Line Interface Circuit
• Manufacturer: Zarlink Semiconductor

POTS APPLICATION CIRCUIT (POTS WITH NO METERING)
For use with a Quad or Octal SLAC device; battery-backed ringing.
RING_SOURCE
75 Vrms, 20 Hz
RING
RING
TIP
DAC
TIP
BAT
BAT
BAT
RS
DB
DB
RS
1
1
2
2
1
2
1
2
C
S1
C
*R
S2
TXx
: See note in the parts list
R
R
FA1
D
FA2
RR1
RR2
VBH
R
R
R
R
R
R2
SR3
SR4
FB1
FB2
Protector
RR1
Protector
RR2
C
BAT
C
RT2
C
C
AD1
AD2
C
R
R
C
BD1
TMG1
TMG2
BD2
C
CAS
C
R
C
R
HP1
HP2
HP1
HP2
R
R
R
SR2
R1
SR1
TMG
VBAT
TMG
AD
HP
BD
VBREF
CAS
DB
DAC
DB
AD
HP
BD
BGND
Zarlink Semiconductor Inc.
2
2
1
1
1
1
2
2
1
2
1
C
RT1
BGND
Le5712x
2
CH1
18
+ 5 V
VCC
U1
V
CC
CH2
C
VCC
ANALOG
GROUND
R
R
RTH2
RTH1
/DGND
AGND
C
TH
RSN
CDC
RSN
CDC
DET
DET
VTX
VTX
IREF
BATTERY
GROUND
FLT
FLT
C1
C2
C3
C1
C2
C3
RD
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
DAC
RS
DB
RS
DB
1
1
2
2
C
C
DC2
R
DC1
R
R
T1
D
T2
DIGITAL
GROUND
R
R
*R
*R
R
RX1
RX2
TX2
REF
TX1
C
C
C
C
VRX1
VRX2
VTX1
VTX2
022503
VOUT
VOUT
CD1
CD2
CD1
CD2
VIN
VIN
C3
C4
C5
C3
C4
C5
1
1
1
2
2
2
1
2
1
1
2
2
1
2