le57d111 Zarlink Semiconductor, le57d111 Datasheet - Page 15

• Manufacturer Part Number: le57d111
• Description: Dual Subscriber Line Interface Circuit
• Manufacturer: Zarlink Semiconductor

APPLICATION CIRCUIT
RING_SOURCE
BAT
BAT
RING
RING
TIP
TIP
C
P
C
2
1
P
2
1
RS
RR2
RS
RR1
100 nF
100 nF
1
R
2
BAT
50 Ω
R
2 MΩ
R
50 Ω
R
400 Ω
R
1.82 MΩ
F2A
SR4
RR1
R2
SR3
F1A
R
50 Ω
R
50 Ω
D
F1B
F2B
DB
VBH
DAC
DB
RR1
RR2
22 nF
1
1/2
22 nF
1/2
U2
U2
C
2
C
C
47 nF
BX2
RT2
BX1
C
U3
22 nF
22 nF
C
AX1
AX2
2.49 kΩ
R
2.49 kΩ
R
TMG1
TMG2
100 nF
100 nF
15 kΩ
15 kΩ
C
R
C
R
HP2
HP2
HP1
HP1
Zarlink Semiconductor Inc.
R
2 MΩ
R
400 Ω
R
1.82 MΩ
SR2
R
I
BAT = - 52 V
R1
SR1
LOOP
HP
LAC
HP
B
DB
A
A
B
VBAT
DB
DAC
TMG
TMG
BGND
2
1
2
1
2
1
(RING)
1
(TIP)
(TIP)
(RING)
= 600 Ω
2
= 30 mA
1
2
C
47 nF
1,2
RT1
15
VCC
+ 5 V
V
Le5711
CH1
CC
CH2
U1
RSVD
ANALOG
GROUND
DB
1,2
R
909 kΩ
2
R
1 MΩ
TH2
TH1
AGND/
DGND
RS
2
BATTERY
GROUND
C
100 nF
DB
TH
CDC
DET
RSN
CDC
RSN
VTX
DET
IREF
VTX
CAS
C1
C2
1
C1
C2
2
2
RS
2
1
2
1
1
1
2
2
1
1
1
R
R
1.5 µF
1.5 µF
20 MΩ
330 nF
T1
T1
C
C
C
DC1
CAS
DC2
DIGITAL
GROUND
83.3 kΩ
124 kΩ
83.3 kΩ
124 kΩ
V
Shared between 4
DSLIC packages
BAT
R
R
Q
RX1
RX1
R
1
DAC
0.01 µF
0.01 µF
C
C
C
0.1 µF
0.1 µF
C
15 kΩ
R
RSN1
TX2
RSN2
TX1
REF
DET
DAC
DET
C1
C2
C1
C2
2
2
1
1
1
2
VRX
VRX
VTX
VTX
1
1
2
2