參數(shù)資料
型號: LT6100IMS8
廠商: LINEAR TECHNOLOGY CORP
元件分類: 模擬信號調(diào)理
英文描述: Precision, Gain Selectable High Side Current Sense Amplifier
中文描述: SPECIALTY ANALOG CIRCUIT, PDSO8
封裝: PLASTIC, MSOP-8
文件頁數(shù): 12/16頁
文件大?。?/td> 257K
代理商: LT6100IMS8
12
LT6100
6100f
APPLICATIU
W
U
U
Low Sense Voltage Operation
Figure 4 shows the simplest circuit configuration in
which the LT6100 may be used. While V
OUT
(output
voltage) increases with positive sense current, at V
SENSE
= 0V, the LT6100’s buffered output can only swing as low
as V
OL
= 15mV. The accuracy at small sense voltages can
be improved by selecting higher gain. When gain of 50V/
V is selected, as shown in Figure 7, V
OUT
leaves the clipped
region for a positive V
SENSE
greater than 1mV compared to
2.5mV for gain of 10V/V (see Figure 6).
OUTPUT
V
EE
OUT
6100 F04
R
SENSE
LT6100
8
V
S+
1
V
S–
A4
2
V
CC
A2
3
4
7
C2
0.1
μ
F
C1
0.1
μ
F
3V
6
5
FIL
TO LOAD
+
5V
+
+
Figure 4. LT6100 Load Current Monitor
SENSE VOLTAGE (V
S+
– V
S–
) (mV)
0
O
0.6
0.8
1.0
90
150
6100 F05
0.4
0.2
0
30
60
120
1.2
1.4
1.6
V
S
= 4.4V TO 48V
V
CC
= 3V
A
V
= 10V/V
T
A
= 25
°
C
Figure 5. Output Voltage vs V
SENSE
SENSE VOLTAGE (V
S+
– V
S–
) (mV)
0
O
0.15
0.20
0.25
15
25
6100 F06
0.10
0.05
0
5
10
20
0.30
0.35
0.40
30
V
S
= 4.4V TO 48V
V
CC
= 3V
A
V
= 10V/V
T
A
= 25
°
C
SENSE VOLTAGE (V
S+
– V
S–
) (mV)
0
0
O
0.2
0.6
0.8
1.0
20
1.8
6100 F07
0.4
10
5
25
15
30
1.2
1.4
1.6
V
S
= 4.4V TO 48V
V
CC
= 3V
A
V
= 50V/V
T
A
= 25
°
C
Figure 6. Expanded View of Output Voltage vs V
SENSE
, A
V
= 10V/V
Figure 7. Expanded View of Output Voltage vs V
SENSE
,
A
V
= 50V/V
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