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INA223EVM Hardware Overview

3.5

INA223EVM Default Jumper Settings

Figure 8 shows the default jumper configuration for the INA223EVM. You may want to change some of the

jumpers on the INA223EVM to match your specific configuration. For example, you may wish to set a

specific I

Figure 8. INA223EVM Default Jumpers

Jumper 3 (JMP3) on the INA223EVM is typically set to the internal (INT) position. When set to the INT

position, the device supply voltage is generated and controlled from the SM-USB-DIG Platform. When this

jumper is set to the external (EXT) position, INA223 pin 4 (V

powered from an external supply.

JMP1 and JMP2 control the I

high, low, SCL, or SDA. Make sure to connect only one jumper at a time for the address control (for

example, if JMP1 is connected, do not connect JMP2, and vice versa). Failure to properly connect

jumpers can cause shorts or interruptions in the communication lines. For more information on the INA223

addressing, consult the INA223 data sheet (SBOS528).

Table 3 summarizes the function of the INA223 test board jumpers. For most applications, all the jumpers

should be left in their default configurations.

Table 3. INA223 Test Board Jumper Functions

Jumper

Default

Description

JMP1

Open

These jumpers select the I

separate I

JMP2

GND

is set to high or low, or JMP1 is set to SDA or SCL.

JMP3

INT

This jumper selects whether the V

the digital power-supply signal (VDUT) generated from the SM-USB-

DIG Platform (INT position), or whether the VDUT pin is connected to

terminal T1, thus allowing for an external supply to power the digital

circuitry (EXT position).

9

SBOU125 – June 2012

INA223EVM User’s Guide and Software Tutorial

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