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PGA309EVM-USB Hardware Setup

Table 5 describes the function of the jumpers in the Miscellaneous connections section of the PGA309 Test Board.

Table 5. PGA309_Test_Board Jumper Functions: Miscellaneous Connections

Jumper	Default	Purpose

JMP1, JMP2	NC	For JMP1 = NC, JMP2 = VREF EXT: The REF pin on the
		PGA309 is configured for internal reference. In this mode, JMP2
		is not connected, so its position does not matter.

	VREF EXT	For JMP1 = VREF , JMP2 = VS: The REF pin is configured for
		external reference and is connected to VS.
		For JMP1 = VREF, and JMP2 = VREF EXT: The REF pin is
		configured for external reference and is connected to T2
		(terminal for external reference connection).

JMP3	ADS1	For JMP3 = ADS1, it connects the analog-to-digital converter
		(ADC) on the USB-DAQ-Platform to the output of the PGA309.
		The ADC on the USB-DAQ-Platform allows full measurement
		and calibration of the PGA309 without any additional
		instruments.

		For JMP3 = NC, the ADC on the USB-DAQ-Platform is not
		connected to the PGA309. This mode is useful if you want to
		use an external DMM in place of the USB-DAQ ADC.

JMP7, JMP8	NC	For JMP7 = NC, and JMP8 = One to PRG: In this mode, the
		one-wire signal from the USB-DAQ-Platform is connected
		directly to the PRG pin on the PGA309. This mode is commonly
		called Four-wire mode because only four connections are
		required (Power, GND, VOUT, and PRG).
	One to PRG	For JMP7 = VOUT to PRG, and JMP8 = One to VOUT: In this
		mode, the one-wire signal from the USB-DAQ-Platform is
		connected to the VOUT/PRG pin on the PGA309. This mode is
		commonly called Three-wire mode because only three
		connections are required (Power, GND, and VOUT/PRG).

Table 6 explains the function of the jumpers in the sensor emulator section connections section of the PGA309 Test Board.

Jumper	Default	Purpose

JMP12	VEXC	This jumper selects VS or VEXC as the reference for the sensor
		emulator. Using VS as the reference is commonly called
		ratiometric mode.

JMP17, JMP4, JMP5, JMP6	Emulate	These jumpers select the sensor emulator when in the Emulate
		position. When the jumper is in the EXT position, it selects the
		external sensor.

JMP14, JMP15	10mV	These jumpers select the range of the sensor emulator.

		This jumper is used for the sensor emulator only; its position is
		not important for externally-connected, real-world sensors.

		10m = maximum emulator output is 10mV/V.

		100m = maximum emulator output is 100mV/V.

JMP13, JMP16	RT–, Diode	This jumper selects the type of temperature sensor you will
		emulate on the EVM. This jumper is used for the sensor
		emulator only; its position is not important for
		externally-connected, real-world sensors.

		JMP13 = Diode, JMP16 = RT-. In this position, the temperature
		sensor emulation is set for diode type temperature sensor.
		When JMP13 = Diode, the position of JMP16 does not matter.

		JMP13 = RT, JMP16 = RT-. In this position, the temperature
		sensor emulation is set for RT–.

		JMP13 = RT, JMP16 = RT+. In this position, the temperature
		sensor emulation is set for RT+.

SBOU084 –February 2010	PGA309EVM-USB 23
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