INA220EVM Hardware Setup
www.ti.com
summarizes the function of the USB DIG platform jumpers. For most applications, the default
jumper position should be used.
and
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 (
) 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 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.
12
INA220 Evaluation Module
SBOU079A – July 2009 – Revised February 2010
Copyright © 2009–2010, Texas Instruments Incorporated
