le5711 Zarlink Semiconductor, le5711 Datasheet - Page 12

• Manufacturer Part Number: le5711
• Description: Dual Subscriber Line Interface Circuit
• Manufacturer: Zarlink Semiconductor

Test Circuits
V
Figure 3. Four-to-Two Wire Insertion Loss and Balance Return Signals
AB
R
V
R
2
2
L
L
L
R
L
R
L
a
b
Figure 2. Two-to-Four Wire Insertion Loss
V
I
L
AB
A (TIP)
B (RING)
Figure 1. Feed Programming
B
BRS = 20 log(V
I
A
L4-2
1
B
A
1
, B
I
L2-4
, A
1
1
, A
, B
Zarlink Semiconductor Inc.
= 20 log(V
2
2
= 20 log(V
(RING)
2
2
(TIP)
(TIP)
(RING)
SLIC
SLIC
SLIC
AGND
AB
TX
12
RSN
RSN
AGND
TX
VTX
VTX
/ V
/ V
RSN
RSN
/ V
VTX
VTX
RX
RX
IREF
CDC
1
2
1
2
AB
)
)
1
2
1
2
)
R
T
R
R
RX
C
T
R
R
DC
RX
REF
V
RX