Texas Instruments PGA302EVM-037, User Manual

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Default Configuration
5 SLDU031 – December 2017
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Copyright © 2017, Texas Instruments Incorporated
PGAxxxEVM-037 Pressure Sensor Signal Conditioner Evaluation Module
2 Default Configuration
The EVM requires a 7-V to 28-V input applied to PWR_IN and GND_IN. The power supply should be
current limited to 100 mA. The default jumper settings connect the resistive bridge emulator to the VBRG
outputs and to the VINP inputs of the PGAxxx device and are described in full in
Table 1 .
Table 1. Default Jumper Settings
Jumper Setting Function
J4 Pins 1-2 Closed Connect VINTP to RT1 10-k
Ω
thermistor
J5 Pins 1-2 Closed Connect top of resistive bridge emulator to VBRGP
J6 Pins 1-2 Closed Connect resistive bridge emulator output to VINPP
J7 Pins 1-2 Closed Connect resistive bridge emulator output to VINPN
J9 Pins 2-3 Closed Power 3.3-V LDO from VCC
J11 Open Disconnect SENT output
Table 2. Additional Jumper Settings Description
Jumper Setting Function
J4 Pins 2-3 closed Connect DAC_CAP to RT1 10-k
Ω
thermistor
J5
Pins 2-3 closed Connect top of resistive bridge emulator to TEST1
Open Connect VBRGP to J3 pin 1
J6
Pins 2-3 closed Connect resistive bridge emulator output to VINTP
Open Connect VINPP to J2 pin 1
J7
Pins 2-3 Closed Connect resistive bridge emulator output to VINTN
Open Connect VINPN to J2 pin 2
J9 Pins 1-2 Closed Power 3.3-V LDO from USB VBUS
J11 Closed Connect SENT output
3 EVM Setup and Operation
3.1 Quick Start Procedure
The PGAxxxEVM-037 is designed to be ready for immediate evaluation out of the box with the onboard
resistive bridge emulator as a simulation of a pressure sensor input. The following procedure details the
steps necessary to begin evaluation with the PGAxxxEVM-037 and the PGAxxx EVM GUI.
1. Collect the following supplies:
• PGAxxxEVM-037
• PC running Windows 7 or later
• Micro-USB to USB cable
• A single power supply unit, battery, or AC/DC adapter to provide a voltage output from 7 V to 28 V
and a current output of up to 100 mA.
2. Follow the instructions in the Installation section (see Section 4.1 ) of the User's Guide to install and run
the PGAxxx EVM GUI.
3. With the power supply off, connect the positive output of the supply to the PWR_IN connector on the
EVM, and the power supply ground to the GND_IN connector. Only turn on the power supply output
after connecting to the EVM.
4. Plug the micro-USB cable into the USB port on the EVM, and the USB side of the cable into the PC.
The EVM setup should look similar to the one shown in Figure 3 .