Datasheet
INA226EVM Hardware
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Table 4 summarizes the function of the INA226 Test Board jumpers. For most applications, all jumpers
should be left in the respective default configurations.
Table 4. INA226EVM Test Board Jumper Functions
Jumper Default Purpose
J2 INT This jumper selects whether the V
S
pin
on the INA226 is connected to the V
DUT
signal generated from the SM-USB-DIG
Platform or whether the digital supply pin
is connected to terminal T2, allowing for
an external supply to power the device.
The default INT position connects the V
S
pin to the V
DUT
control signal.
J3/J4 GND This jumper selects the I
2
C A0 address
selection for A0.
J5/J6 GND This jumper selects the I
2
C A1 address
selection for A1.
3.6 INA226EVM Features
This section describes some of the hardware features present on the INA226EVM test board.
3.6.1 J2: I
2
C V
S
Control Setting
Jumper J2 selects what the INA226 supply pin is connected to. If J2 is set to the INT position, the V
S
pin is
connected to the switchable V
DUT
signal generated from the SM-USB-DIG Platform. This voltage can be
set to either 3.3 V or 5 V, depending on how it is configured in the software. While J4 is set in the INT
position, the V
S
Power button in the INA226EVM software is able to control whether the V
DUT
supply
voltage is turned on or off.
When J2 is set in the EXT position, an external supply connected to terminal T2 can be used to provide
the supply voltage for the INA226.
3.6.2 J3/J4: I
2
C Address Hardware Setting (A0)
Jumpers J3 and J4 are used to set the hardware setting for the A0 I
2
C address pin on the INA226. Using
J3, the A0 address can be set to either a logic '1' or a logic '0'. Using J4, the A0 address can be set to
either the SCL or SDA communication line. Make sure to only have either J3 or J4 connected individually;
failure to keep these lines separate can lead to board shorts and problems with the I
2
C communication
lines. See Section 5.2.1 on how to configure the INA226EVM software to match the J3/J4 hardware
setting.
3.6.3 J5/J6: I
2
C Address Hardware Setting (A1)
Jumpers J5 and J6 are used to set the hardware setting for the A1 I
2
C address pin on the INA226. Using
J3, the A1 address can be set to either a logic '1' or a logic '0'. Using J4, the A1 address can be set to
either the SCL or SDA communication line. Make sure to only have either J5 or J6 connected individually;
failure to keep these lines separate can lead to board shorts and problems with the I
2
C communication
lines. See Section 5.2.1 on how to configure the INA226EVM software to match the J5/J6 hardware
setting.
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INA226EVM Evaluation Board and Software Tutorial SBOU113– June 2011
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