le57d111 Zarlink Semiconductor, le57d111 Datasheet - Page 14
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le57d111
Manufacturer Part Number
le57d111
Description
Dual Subscriber Line Interface Circuit
Manufacturer
Zarlink Semiconductor
Datasheet
1.LE57D111.pdf
(20 pages)
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RING
RING
BAT
R
TIP
TIP
L
I
, R
BAT = - 52 V
LOOP
1
2
1
2
D
LAC
VBH
DAC
DB
DB
= 30 mA
2.2 nF
2.2 nF
C
C
= 600 Ω
BX1
BX2
1
2
100 nF
100 nF
2.2 nF
2.2 nF
C
C
C
C
AX2
AX 1
HP2
HP1
1600 Ω
1600 Ω
R
R
TMG1
TMG2
Figure 7. Le5711 Test Circuit
DAC
DB
HP
B
DB
HP
VBAT
TMG
TMG
A
A
B
1
2
1
2
BGND
1
(RING)
1
2
2
Zarlink Semiconductor Inc.
(TIP)
(TIP)
(RING)
1
2
1,2
VCC
14
+ 5 V
Le5711
V
CH1
CH2
CC
RSVD
1,2
AGND/
DGND
RSN
RSN
CDC
CDC
DET
IREF
VTX
DET
VTX
CAS
C1
C2
C1
C2
2
2
2
2
1
1
1
2
2
1
1
1
R
0.33 µF
R
1.5 µF
1.5 µF
T1
T2
C
C
CAS
DC2
100 kΩ
100 kΩ
150 kΩ
150 kΩ
R
R
RX1
RX2
C
DC1
15 kΩ
R
VRX
REF
VRX
VTX
VTX
DET
C1
C2
DET
C1
C2
1
1
2
2
1
2
1
2
1
2