Texas Instruments BOOSTXL-ADS1219 BoosterPack, Руководство пользователя

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BOOSTXL-ADS1219 Hardware Overview
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8 SBAU316 – August 2018
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BOOSTXL-ADS1219 BoosterPack™ User's Guide
3.5 Power Supply
Both the LaunchPad™ 3.3-V and 5-V supplies are used for the BOOSTXL-ADS1219. The digital supply is
3.3 V and supplies the ADS1219 DVDD supply input. AVDD is the ADS1219 analog supply and can
accommodate either 3.3-V or 5-V operation. The choice of analog supply voltage is selected by jumper
JP2. JP2:1-2 selects the 5-V supply source and JP2:2-3 selects the 3.3-V source, as shown in
Figure 6 .
Figure 6. Analog Supply Jumper
The 3.3-V source comes directly from the LaunchPad™ and when available on the BOOSTXL-ADS1219
the D2 LED lights up indicating that the supply is active. The LaunchPad™ 5-V source is often less than
5 V. To achieve a stable voltage when operating at 5-V AVDD, U3 is used to charge pump the
LaunchPad™ 5-V source and regulate for a fixed 5-V output. U3 can be disabled by installing jumper JP1,
but by default this jumper is not installed. When U3 is active, then LED D1 lights up indicating the supply
is available. TP1 can be used to monitor the AVDD supply voltage. Jumper placement and LEDs are
shown in
Figure 6 .
4 Setup Details
Getting the BOOSTXL-ADS1219 and MSP-EXP432E401Y LaunchPad™ combination to communicate
with the PC requires firmware to be installed in the LaunchPad™ (see
Section 4.2.1 ). This firmware is
made available as part of the ADS1219 BoosterPack™ GUI software installation. Depending on which
operating system is being used, there may also be a need for driver installation. The drivers are also
included as a part of the GUI software installation.
4.1 ADS1219 BoosterPack™ GUI Installation
Download and install the GUI from the BOOSTXL-ADS1219 tools folder. The license agreements must be
accepted or the software will not install. Follow all remaining on-screen instructions to complete the
installation.
4.2 Using the UniFlash Tool to Program the LaunchPad™
The UniFlash program can be accessed via the cloud or by download . When using the cloud version for
the first time the TI cloud agent must be installed. Follow all instructions by downloading and installing the
correct cloud version for the operating system being used.