INA250A1 Datasheet, PDF (19/33 Pages) Texas Instruments – Current-Shunt Monitor with Precision Integrated Shunt Resistor

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8 Applications and Implementation
INA250A1, INA250A2, INA250A3, INA250A4
SBOS511B – APRIL 2015 – REVISED DECEMBER 2015
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The INA250 measures the voltage developed across the internal current-sensing resistor when current passes
through it. The ability to drive the reference pin to adjust the functionality of the output signal offers multiple
configurations, as discussed in this section.
8.2 Typical Applications
8.2.1 Current Summing
Supply
2.7-V to 36-V
Supply
C_BYPASS
0.1 µF
IN+
VS
REF
+
OUT
-
IN-
GND
Load
Supply
2.7-V to 36-V
Supply
CBYPASS
0.1 µF
IN+
VS
REF
+
OUT
-
C_BYPASS
0.1 µF
2.7-V to 36-V
Supply
Supply
REF
VS
IN+
OUT
+
-
Summed
Output
GND
IN-
Load
IN-
GND
Load
Figure 37. Daisy-Chain Configuration
Copyright © 2015, Texas Instruments Incorporated
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