Texas Instruments NA210-214EVM, Руководство пользователя

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2.2 Measurement without Shunt
+
+
V+
C
1
R
4
R
3
V
OUT
V
CM
V
DIFF
V
IN+
V
IN
-
REF
INA210-214EVM
INA210
DIP
+
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Quick Start Setup and Use
This connection method allows the user to either simulate the voltage developed across a sense resistor
based on a given set of system conditions, or to connect the INA210-214EVM remotely to an existing
shunt already included in an example application.
Figure 3 illustrates a measurement configuration without
a shunt.
To configure a measurement evaluation without a shunt, follow these procedures.
1. Connect a differential voltage to the V
IN+
and V
IN–
terminals of T2. With the reference voltage set at
ground, ensure that the V
IN+
terminal is the more positive of the two inputs.
2. Measure the output voltage at the V
OUT
terminal of T2.
Figure 3. Measurement without Shunt
Note: The output voltage is equal to the gain of the device multiplied by the differential voltage
measured directly at the device input pins.
SBOU065 – August 2008 INA210-214EVM User's Guide 5
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