Texas Instruments PGA309EVM-USB manual USB-DAQ-Platform Jumper Settings

PGA309EVM-USB Hardware Setup www.ti.com

Table 7 explains the function of the USB-DAQ-Platform jumpers. For most applications the default jumper position should be used. A separate document gives details regarding the operation and design of the USB-DAQ-Platform.

Table 7. USB-DAQ-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 bus. External power is typically used because the USB bus
		power is noisy.
JUMP2	EXT	Same as JUMP1.
JUMP3	EE ON	This jumper determines where the PGA309 gets its power
		supply. In the VDUT position, the EVM provides power. The
		default is the VDUT position. In the VS_Ext position, the power is
		connected externally.
JUMP4, JUMP5	L, L	This jumper sets the address for the USB board. The only
		reason to change from the default is if multiple boards are being
		used.
JUMP9	5V	This jumper selects the voltage of the device under test supply
		(VDUT = 5V or 3V)
JUMP10	WP ON	This jumper write-protects the firmware EEPROM.
JUMP11	WP ON	This jumper write-protects the calibration EEPROM
JUMP13	Reg	This jumper configures the regulator output to generate the VDUT
		supply. The USB bus can be used as the VDUT supply.
JUMP14	9V	This jumper configures the external power (9V as apposed to
		the bus)
JUMP17	BUS	While in the BUS position VDUT operation is normal. While in the
		VRAW position, the VDUT supply is connected to an external
		source. This allows for any value of VDUT between 3V and 5V.
JUMP18	VDUT	Connects the pull-up resistor on GPIO to the VDUT supply or the
		VCC supply.

CAUTION

Adjusting the value of VDUT beyond the range of 3V to 5V will damage the EVM.

24	PGA309EVM-USB	SBOU084 –February 2010
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