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INA139 Datasheet(PDF) 7 Page - Texas Instruments

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Part # INA139
Description  High-Side Measurement CURRENT SHUNT MONITOR
PDF  15 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

INA139 Datasheet(HTML) 7 Page - Texas Instruments

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INA139, INA169
7
SBOS181D
www.ti.com
FIGURE 4. Offsetting the Output Voltage.
V
O
R
2
R
1
1
Gain Set by R
1 R2
Output Offset =
(V
R)R2
R
1 + R2
a) Using resistor divider.
V
O
R
L
1
REF200
100
µA
V+
V
R
Gain Set by R
L
Output Offset = (100
µA)(R
L)
(independent of V+)
b) Using current source.
INA139
3
4
INA139
3
4
FIGURE 5. Bipolar Current Measurement.
Charger
Load
1
2
+5V
5
5
4
3
1
2
+5V
4
3
1
Ω
10k
Ω
10k
Ω
INA169
INA169
+
48V
1k
Ω
1k
Ω
1k
Ω
1k
Ω
1N4148
±1A
1N4148
100k
Ω
SIGN
0V to 1V
Comparator
V
O



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