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参数资料
| 型号： | PBL386612 |
| 厂商： | ERICSSON |
| 英文描述： | Subscriber Line Interface Circuit |
| 中文描述： | 用户线接口电路 |
| 文件页数： | 16/18页 |
| 文件大小： | 115K |
| 代理商： | PBL386612 |
PBL 386 61/2
16
Preliminary
Figure 13. Battery feed characteristics (without the protection resistors on the line).
A:
LC
(14)
I
L
(@ V
TR
= 0) = I
LConst
I
LConst
(typ) =
I
LProg
= 500
B, C: I
L
= I
LConst
V
TR
= V
BatVirt
- R
Feed
(I
LProg
- 5
10
-3
)
D:
E:
I
L
≈
5 mA
F:
Apparent battery V
App
(@I
L
= 0) = V
BatVirt
+ 5
10
-3
R
Feed
G:
R
FeedG
= 2
25
H:
V
TRMax
= |V
Bat
| - V
BOH
J:
Virtual battery V
BatVirt
(@ I
L
= 5 mA) = |V
Bat
| - 6.8
(17)
R
Feed
= R
SG
+ 40
C
D
B
E
G
F
F
J
H
C
D
A
V
TR
[V]
I
[
DC characteristics
B
Power-up Sequence
No special power-up sequence is neces-
sary except that ground has to be present
before all other power supply voltages.
The digital inputs C1 and C2 are internal
pull-up terminals.
Printed Circuit Board Layout
Care in Printed Circuit Board (PCB) layout
is essential for proper function;
The components connecting to the RSN
input should be placed in close proximity to
that pin, such that no interference is inject-
ed into the RSN pin. Ground plane sur-
rounding the RSN pin is advisable.
Analog ground (AGND) should be con-
nected to battery ground (BGND) on the
PCB in one point.
R
and R
should be connected to
AGND with short leads. Pin LP, pin PSG
and pin AOV are sensitive to leakage cur-
rents. Pin AOV should be surrounded by a
guardring connected to AGND.
R
and C
connections to VBAT should
be short and very close to each other.
C
and C
B2
must be connected with short
wide leads.
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相关代理商/技术参数 |
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| PBL38661-2 | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:Subscriber Line Interface Circuit |
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