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參數(shù)資料
| 型號： | LE57D111JC |
| 英文描述： | Telecommunication IC |
| 中文描述： | 通信集成電路 |
| 文件頁數(shù)： | 14/22頁 |
| 文件大小： | 546K |
| 代理商： | LE57D111JC |
P R E L I M I N A R Y
14
Le57D11 Data Sheet
Figure 4.
Feed Programming
Note:
To choose the correct value for R
DC
, please contact the manufacturer.
Test Circuits
Figure 5.
Two-to-Four Wire Insertion Loss
Figure 6.
Four-to-Two Wire Insertion Loss and Balance Return Signals
R
L
A (TIP)
B (RING)
IREF
CDC
SLIC
a
b
I
L
RSN
R
DC
C
DC
R
REF
SLIC
VTX
1
VTX
2
AGND
RSN
1
RSN
2
V
AB
R
T
R
RX
I
L2-4
= 20 log(V
TX
/ V
AB
)
R
L
2
R
L
2
V
L
A
1
, A
2
(TIP)
B
1
, B
2
(RING)
SLIC
AGND
V
AB
R
T
R
RX
I
L4-2
= 20 log(V
AB
/ V
RX
)
BRS = 20 log(V
TX
/ V
RX
)
V
RX
R
L
A
1
, A
2
(TIP)
B
1
, B
2
(RING)
VTX
1
VTX
2
RSN
1
RSN
2
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