Datasheet

INA209EVM Hardware Setup www.ti.com
Table 5. Power-Supply Jumper Configuration #1
Mode Jumper Comment
External Power—5V JUMP17 = BUS (not used) In this mode, all power is supplied to the EVM via J5 or T3. The external
(default jumper settings) JUMP13 = REG supply must be between 5.8V and 10.4V for proper operation. All digital
JUMP14 = 9V I/Os are regulated to 5V using U19 (REG101).
JUMP1 = EXT
JUMP2 = EXT
JUMP6 = 5V
JUMP7 = REF
External Power—3V JUMP17 = BUS (not used) In this mode, all power is supplied to the EVM via J5 or T3. The external
(typical jumper settings) JUMP13 = REG supply must be between 5.8V and 10.4V for proper operation. All digital
JUMP14 = 9V I/Os are regulated to 3V using U19 (REG101).
JUMP1 = EXT
JUMP2 = EXT
JUMP6 = 3V
JUMP7 = REF
External Power—Variable JUMP17 = Vraw In this mode, all the digital I/Os are referenced to the supply that is
Supply JUMP13 = BUS attached to either J5 or T3.
JUMP14 = 9V (not used)
JUMP1 = EXT
JUMP2 = EXT
CAUTION
JUMP6 = 5V (not used)
JUMP7 = REG (ratiometric
It is absolutely critical that the
mode)
supply voltage does not
exceed 5.5V in this mode.
The supply is directly applied to devices with 5.5V absolute maximum
ratings. This mode of operation is useful when a device supply other
then 3.0V or 5.0V is required.
Table 6. Power-Supply Jumper Configuration #2
Mode Jumper Comment
Bus Power—5V JUMP17 = BUS In this mode, the USB bus completely powers the EVM. The USB bus is
JUMP13 = BUS regulated by the master (computer) to be 5V. This mode relies upon
JUMP14 = 9V (not used) external regulation. This mode is recommended only when an external
JUMP1 = BUS 9V supply is not available. If an external 9V supply is available, use
JUMP2 = BUS either External Power 5V mode or External Power 3V mode.
JUMP6 = 5V (not used)
JUMP7 = REG (ratiometric
mode, 5V supply)
Bus Power—3V JUMP17 = BUS (not used) In this mode, the USB bus completely powers the EVM. The regulator
JUMP13 = REG (U19, REG101) is used to generate a 3V supply for all digital I/O.
JUMP14 = BUS
JUMP1 = BUS
JUMP2 = BUS
JUMP6 = 3V
JUMP7 = REG (ratiometric
mode, 5V supply)
16
INA209 Evaluation Module SBOU055A–February 2008–Revised February 2010
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