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INA3221EVM Hardware Overview

3.5 INA3221EVM Default Jumper Settings

Figure 8 shows the default jumper configuration for the INA3221EVM. Some of the jumpers on the

INA3221EVM board can be changed to match specific configuration requirements. For example, a specific

C address can be set by configuring jumpers J1 and J2.

Figure 8. INA3221EVM Default Jumper Settings

Jumper 3 on the INA3221EVM is typically set to the INT position. When set to the INT position, the

INA3221 supply voltage is generated and controlled by the SM-USB-DIG platform. When this jumper is set

to the EXT position, VS connects to terminal strip T2.

Jumpers J1 and J2 control the INA3221 I

C address pin. These jumpers can set the address (A0) pin

to either high, low, SCL, or SDA. Make sure to only connect one jumper at a time, never both.

Failure to properly connect jumpers can cause shorts or interruptions in the communication lines. For

more information on the INA3221 addressing, refer to the INA3221 product data sheet.

SBOU126–April 2012 INA3221EVM Evaluation Board and Software Tutorial

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