參數(shù)資料
型號(hào)： TS615
廠商： 意法半導(dǎo)體
英文描述： DUAL WIDE BAND OPERATIONAL AMPLIFIER WITH HIGH OUTPUT CURRENT
中文描述： 雙寬帶運(yùn)放的大輸出電流
文件頁(yè)數(shù)： 23/27頁(yè)
文件大小： 982K
代理商： TS615
TS615
23/27
POWER DOWN MODE BEHAVIOUR
Figure 66 :
Equivalent Schematic
Please note that the short circuited output in pow-
er down mode is referenced to (-
V
CC
). No problem
appears when used in differential mode. Never-
theless, when used in single ended on a load ref-
erenced to GND, the (-
V
CC
) level contributes to a
current consumption through the load. As de-
scribed on the Figure 68, the interest of featuring
an output short circuit in power down mode is to
keep the best impedance matching between the
system and the twisted pair telephone line when
the modem is in sleep mode. By this way, the mo-
dem can be waked-up with a signal from the line
without any damage of this signal. This concept is
particularly intended for the ADSL over voice mo-
dems, where the modem in sleep mode, must be
waked-up by the phone call.
Figure 67 :
Matching in Sleep Mode
Figure 68 :
Standby Mode. Time On
>
Off
Figure 69 :
Standby Mode. Time Off
>
On
Figure 70 :
Standby Mode. Input/Output Isolation
vs. Frequency
A
V
=+4, R
fb
=620
, V
CC
=±6V, Vout=3Vp
.
12
+
_
..
.
V
cc
-
V
cc
-
V
cc
+
Ouput 1
R
pdw
+
_
.
..
.
V
cc
+
Ouput 2
A2
R
pdw
-Vcc
POWER
DOWN
pin6
-Vcc
A1
1
.
4
5
2
3
11
10
13
14
POWER
DOWN
pin6
TS615
1:2
Transformer
Line (100
)
Consumption=80
μ
A
POWER DOWN
25
12.5
12.5
5
max.
from the line
Matching
The system can be waked-up
0
10
20
30
40
50
-6
-5
-4
-3
-2
-1
0
Vout
Vpdw
Disabled Output
Enabled Output
(
Time (
μ
s)
0
1
2
3
4
5
6
5
4
3
2
1
0
1
Disabled Output
Enabled Output
(
Vpdw
Vout
Time (μs)
10k
100k
1M
10M
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
Frequency (Hz)
I
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TS615_04 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:DUAL WIDE BAND OPERATIONAL AMPLIFIER WITH HIGH OUTPUT CURRENT
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TS615P 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:DUAL WIDE BAND OPERATIONAL AMPLIFIER WITH HIGH OUTPUT CURRENT
TS616 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:High-speed operational amplifier evaluation board kit
TS616_07 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Dual wide band operational amplifier with high output current
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