Ina223Evm Default Jumpers; Ina223 Test Board Jumper Functions - Texas Instruments INA223EVM User's Manual And Software Tutorial

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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
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specific I C address by configuring jumper 1 (JMP1) and jumper 2 (JMP2).
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.
Jumper
JMP1
JMP2
JMP3
SBOU125 – June 2012
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Figure 8. INA223EVM Default Jumpers
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C address pin for the INA223; these jumpers set the address for A0 to either
Table 3. INA223 Test Board Jumper Functions
Default
Open These jumpers select the I
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separate I C addresses can be selected,depending on whether JMP2
GND
is set to high or low, or JMP1 is set to SDA or SCL.
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).
Copyright © 2012, Texas Instruments Incorporated
INA223EVM Hardware Overview
) connects to terminal strip T1 and can be
S
Description
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C AO address selection for A0. Four
pin on the INA223 is connected to
S
INA223EVM User's Guide and Software Tutorial
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