Datasheet

www.ti.com INA209EVM Hardware Setup
Table 4 indicates the function and default position of the USB-DIG-Platform jumpers. For most
applications, the default jumper position should be used. Table 5 and Table 6 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 4. USB DIG Platform Jumper Settings
Jumper Default Purpose
This jumper selects external power or bus power. External
power is applied on J5 or T3 (9V dc). Bus power is 5V from the
JUMP1 EXT
USB bus. External power is typically used because the USB bus
power is noisy.
This jumper selects external power or bus power. External
power is applied on J5 or T3 (9V dc). Bus power is 5V from the
JUMP2 EXT
USB bus. External power is typically used because the USB bus
power is noisy.
This jumper determines where the INA209 gets its power supply.
In the V
DUT
position, the EVM provides power. The default is the
JUMP3 EE ON
V
DUT
position. In the Vs_Ext position, the power is connected
externally.
This sets the address for the USB board. The only reason to
JUMP4 L
change from the default is if multiple boards are being used.
This sets the address for the USB board. The only reason to
JUMP5 L
change from the default is if multiple boards are being used.
This selects the voltage of the device under test supply
JUMP9 5V
(V
DUT
= 5V or 3V)
JUMP10 WP ON This write protects the firmware EEPROM.
JUMP11 WP ON This write protects the calibration EEPROM.
Uses the regulator output to generate the V
DUT
supply. The USB
JUMP13 Reg
bus can be used as the V
DUT
supply.
JUMP14 9V Uses external power (9V as apposed to the 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 allows for any value of V
DUT
between 3V and 5V.
CAUTION
JUMP17 BUS
When JUMP17 is in the
V
RAW
position, adjusting
the V
DUT
voltage beyond
the 3V to 5V range will
damage the EVM.
Connects the pull-up resistor on the GPIO to the V
DUT
supply or
JUMP18 V
DUT
the V
CC
supply.
15
SBOU055A–February 2008–Revised February 2010 INA209 Evaluation Module
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