Texas Instruments INA220EVM, User Manual, Page: 12 / 26

INA220EVM Hardware Setup
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12 SBOU079B – July 2009 – Revised May 2016
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Copyright © 2009–2016, Texas Instruments Incorporated
INA220 Evaluation Module
Table 3 summarizes the function of the USB DIG platform jumpers. For most applications, the default
jumper position should be used. Table 4 and Table 5 describe the options for the power-supply
configuration. For example, the logic power supply can be changed from the default of 5V to 3V. A
separate document (
SBOU058 ) gives details regarding the operation and design of the USB DIG platform.
Table 3. USB DIG Platform Jumper Settings
Jumper Default Purpose
JUMP1 EXT This jumper selects external power or bus power. External
power is applied on J5 (on USB DIG board) or T3 (9V
DC
). Bus
power is 5V from the USB. External power is typically used
because the USB power is noisy.
JUMP2 EXT Same as JUMP1.
JUMP3 EE ON This jumper determines where the TUSB3210 will load the USB
DIG Platform firmware upon power-up or reset. The
EE Off
position is used for development for development or firmware
updates.
JUMP4, JUMP5 L, L This jumper sets the address for the USB board. The only
reason to change from the default setting is if multiple boards
are being used.
JUMP9 5V This selects the voltage of the device under test supply (V
DUT
=
5V or 3V). This jumper is typically the only jumper that is
changed for most applications.
JUMP10 WP ON This write-protects the firmware EEPROM.
JUMP11 WP ON This write-protects the calibration EEPROM.
JUMP13 Reg Uses the regulator output to generate the V
DUT
supply. The USB
can be used as the V
DUT
supply.
JUMP14 9V Uses the external power (9V as apposed to the bus)
JUMP17 BUS While in the BUS position, V
DUT
operation is normal. While in the
V
RAW
position, the V
DUT
supply is connected to an external
source. This flexibility allows for any value of V
DUT
between 3V
and 5V.
CAUTION
When JUMP17 is in the
V
RAW
position, adjusting
the V
DUT
voltage beyond
the 3V to 5V range will
damage the EVM.
JUMP18 V
DUT
Connects the pull-up on the GPIO to the V
DUT
supply or the V
CC
supply.