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參數(shù)資料
| 型號(hào)： | HC55140IBZ |
| 廠商： | INTERSIL CORP |
| 元件分類(lèi)： | 模擬傳輸電路 |
| 英文描述： | Low Power Universal SLIC Family |
| 中文描述： | TELECOM-SLIC, PDSO28 |
| 封裝： | ROHS COMPLIANT, PLASTIC, MS-013-AE, SOIC-28 |
| 文件頁(yè)數(shù)： | 26/36頁(yè) |
| 文件大小： | 701K |
| 代理商： | HC55140IBZ |
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FN4659.13
June 1, 2006
Given: V
BH
= V
BL
= -48V, Loop current = 30mA, R
L
(load
across tip and ring) = 600
, Quiescent battery power =
(48V) (0.8mA) = 38.4mW, Quiescent VCC power = (5V)
(2.7mA) = 13.5mW, Power sharing resistor = 600
.
1. Without power sharing, the on-chip power dissipation
would be 952mW (Equation 42).
2. With power sharing, the on-chip power dissipation is
412mW (Equation 43). A power redistribution of 540mW.
On-chip power dissipation without power sharing resistor.
On-chip power dissipation with 600
power sharing resistor.
Battery Selection
Battery selection is a technique, for a two battery supply
system, where the SLIC automatically diverts the loop
current to the most appropriate supply for a given loop
length. This results in significant power savings and lowers
the total power consumption on short loops. This technique
is particularly useful if most of the lines are short, and the on
hook condition requires a -48V battery. In Figure 26, it can
be seen that for long loops the majority of the current comes
from the high battery supply (V
BH
) and for short loops from
the low battery supply (V
BL
).
PD
V
BH
(
)
30mA
(
)
38.4mW
13.5mW
RL
(
)
30mA
(
)
2
–
+
+
=
(EQ. 42)
PD
952mW
=
PD
V
BH
(
–
(
)
30mA
(
)
)
2
38.4mW
13.5mW
)
2
+
+
=
(EQ. 43)
R
L
)
30mA
(
R
PS
(
)
30mA
(
–
PD
412mW
=
FIGURE 25. POWER SHARING (SINGLE SUPPLY SYSTEMS)
V
TX
V
RX
UniSLIC14
TIP
RING
V
BL
V
BH
-48V
-48V
ON SHORT LOOPS, THE
MAJORITY OF CURRENT
FLOWS OUT THE
V
BL
PIN
R
PS
FIGURE 26. BATTERY SELECTION (DUAL SUPPLY SYSTEMS)
L
0
35
30
25
20
15
10
5
1
9
8
6
7
5
5
5
5
4
4
4
3
3
2
2
1
2
LOOP RESISTANCE (
)
1
40
VBH = -48V
VBL = -24V
RILim = 33.2k
V
BL
V
BH
V
BH
V
BL
Pinouts - 28 Lead PLCC Packages
HC55120
(28 LEAD PLCC)
TOP VIEW
R
C
2
3
HC55121
(28 LEAD PLCC)
TOP VIEW
R
C
1
2
3
D
C
C
C
S
C
D
P
1
V
28
N
27
V
26
Z
4
RSYNC
ILIM
ROH
RD
AGND
GKD
V
CC
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
BGND
TIP
VBH
VBL
RING
CRT
RDC_RAC
D
C
C
C
S
C
D
P
V
28
S
27
V
26
Z
4
RSYNC_REV
ILIM
ROH
RD
AGND
GKD
V
CC
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
BGND
TIP
VBH
VBL
RING
CRT_REV
RDC_RAC
HC55120, HC55121, HC55130, HC55140, HC55142, HC55143, HC55150
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HC55140IM | 制造商:Rochester Electronics LLC 功能描述:LOW PWR SLIC,POL REV,63DB BALANCE - Bulk |
| HC55140IMZ | 功能描述:電信線路管理 IC LW PWR SLIC POLV 63DB BALANCE RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類(lèi)型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| HC55141 | 制造商:INTERSIL 制造商全稱(chēng):Intersil Corporation 功能描述:Low Power Universal SLIC Family |
| HC55141IM | 制造商:INTERSIL 制造商全稱(chēng):Intersil Corporation 功能描述:Low Power Universal SLIC Family |
| HC55142 | 制造商:INTERSIL 制造商全稱(chēng):Intersil Corporation 功能描述:Low Power Universal SLIC Family |
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