Texas Instruments BoosterPack BOOSTXL-ADS1119 User manual

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BOOSTXL-ADS1119 BoosterPack™ User's Guide
User's Guide
SBAU322–August 2018
BOOSTXL-ADS1119 BoosterPack™ User's Guide
Figure 1. ADS1119 Evaluation Module (BOOSTXL-ADS1119)
The ADS1119 BoosterPack™ plug-in module (BOOSTXL-ADS1119) allows users to evaluate the
functionality of the ADS1119. The ADS1119 is a 16-bit, delta-sigma, analog-to-digital converter (ADC) that
can be configured as four single-ended inputs or as two differential input pairs. Data rates range from
20 SPS up to 1000 SPS. Processors can communicate to the ADS1119 though an I2C interface.
This user's guide includes a detailed description of the hardware (HW), bill of materials (BOM), schematic,
and software GUI when using the LaunchPad™ MSP-EXP432E401Y.
Table 1. Related Documentation
Device Literature Number
ADS1119 SBAS925
MSP-EXP432E401Y SLAU748

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Contents
1 Introduction ................................................................................................................... 3
2 Quick Start.................................................................................................................... 4
3 BOOSTXL-ADS1119 Hardware Overview................................................................................ 7
4 Setup Details ................................................................................................................. 9
5 ADS1119 BoosterPack™ GUI Operation ............................................................................... 16
6 Bill of Materials, PCB Layout, and Schematic.......................................................................... 21
List of Figures
1 ADS1119 Evaluation Module (BOOSTXL-ADS1119)................................................................... 1
2 Block Diagram................................................................................................................ 3
3 Quick Start.................................................................................................................... 4
4 LaunchPad™ and BoosterPack™ Combo ............................................................................... 6
5 BOOSTXL-ADS1119 Overview............................................................................................ 7
6 Analog Supply Jumper...................................................................................................... 9
7 Serial Port Selection ....................................................................................................... 10
8 Serial Port Settings ........................................................................................................ 11
9 Program the Device........................................................................................................ 11
10 Programming Successful.................................................................................................. 12
11 UniFlash: New Configuration ............................................................................................. 13
12 UniFlash: Choose Connection............................................................................................ 13
13 UniFlash: Browse to Firmware ........................................................................................... 14
14 UniFlash: Load Image ..................................................................................................... 14
15 UniFlash: Successful Download.......................................................................................... 15
16 Power Jumper Change.................................................................................................... 16
17 Home Page ................................................................................................................. 17
18 Quick Start Page ........................................................................................................... 17
19 Settings Page............................................................................................................... 18
20 Chart Page.................................................................................................................. 19
21 Register Map Page ........................................................................................................ 19
22 Collateral Page ............................................................................................................. 20
23 Top Silkscreen.............................................................................................................. 23
24 Top Layer ................................................................................................................... 23
25 Bottom Layer................................................................................................................ 24
26 Bottom Silkscreen.......................................................................................................... 24
27 BOOSTXL-ADS1119 Schematic ......................................................................................... 25
List of Tables
1 Related Documentation..................................................................................................... 1
2 Header Input (J5)............................................................................................................ 7
3 Terminal Block Input (J6)................................................................................................... 7
4 MSP432E401Y Port to BoosterPack™ Interface........................................................................ 8
5 Bill of Materials ............................................................................................................. 21
Trademarks
BoosterPack, LaunchPad are trademarks of Texas Instruments.
Windows is a registered trademark of Microsoft.
All other trademarks are the property of their respective owners.

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1 Introduction
The BOOSTXL-ADS1119 is a fully-assembled evaluation platform designed to highlight the ADS1119
device features and its various modes of operation.
The BOOSTXL-ADS1119 interfaces to LaunchPad™ development platforms using the XL connector
format. However, to use the ADS1119 BoosterPack™ GUI, a specific LaunchPad™ (the MSP-
EXP432E401Y) must be used. The LaunchPad™ communicates to the ADS1119 through its I2C interface
and also acts as a USB-to-PC GUI communication bridge.
NOTE: The BOOSTXL-ADS1119 requires an external master controller to evaluate the ADS1119.
The MSP-EXP432E401Y LaunchPad™ is controlled by commands received from the ADS1119
BoosterPack™ GUI. The LaunchPad™ sends data to the GUI for display and analysis. If a LaunchPad™
is not used, the BoosterPack™ plug-in module format allows an alternate external host to communicate
with the ADS1119 using the LaunchPad™ connectors.
The BOOSTXL-ADS1119 EVM incorporates circuitry and components with the following features:
• The 16-bit ADS1119 delta-sigma ADC with four single-ended input channels (or two differential),
2.048-V reference, and I2C interface.
• External reference and analog inputs can be connected either through a header or screw terminal
block.
• 3.3-V or 5-V selectable analog power supply.
• LEDs to indicate active power supplies.
• I2C interface for the ADS1119 device configuration and communication.
Figure 2 shows the BOOSTXL-ADS1119 EVM architecture along with key components and blocks listed in
the features.
Figure 2. Block Diagram

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2 Quick Start
The quick start in Figure 3 shows a minimalist view of the startup procedure to get the system up and
running. Details regarding these steps can be found in Section 4.
Figure 3. Quick Start
2.1 Step 1
Download and install the GUI software from the BOOSTXL-ADS1119 tools folder. This software install
also includes the firmware file required for communication with the LaunchPad™. The firmware file can be
installed to the LaunchPad™ through the GUI software or by using the UniFlash cloud tool. A desktop
version of UniFlash is also available for download if needed.
2.2 Step 2
Connect the LaunchPad™ to the PC and download the firmware to the LaunchPad™ using the micro USB
cable provided with the LaunchPad™ kit.
2.2.1 Connect the LaunchPad™
Connect the USB cable from the PC to the micro USB connector on the top portion of the LaunchPad™
(XDS110 portion of the LaunchPad™). A green LED lights up indicating that the LaunchPad™ is powered.
2.2.2 Flash the Firmware to the Launchpad
There are two possible methods to flash the firmware to the LaunchPad™. The first method involves using
the BOOSTXL-ADS1119 GUI software while the second method uses the UniFlash program where links
are provided in Section 2.1.
2.2.2.1 Firmware Download Using the GUI Software
The required BOOSTXL-ADS1119 firmware and the programming functionality for downloading the
firmware to the LaunchPad™ is included as a part of the GUI software. The process involves connecting
the proper COM port required for programming the device. The Connect icon is located in the lower left
corner of GUI window. If the correct serial COM port cannot be found, the desired port can be selected
from the Options drop down menu and selecting Serial Port; see Figure 7.

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From the File drop-down menu select Program Device from the menu options as illustrated in Figure 9. If
the GUI detects the LaunchPad™, the firmware is automatically programmed into the LaunchPad™.
When the firmware program is successfully downloaded (see Figure 10), the GUI software can now
communicate with the LaunchPad™.
2.2.2.2 Firmware Download Using the UniFlash Software
An alternate method for downloading the firmware is by using the UniFlash programming software. This
tool is useful in case there is an issue using the Program Device option in the GUI software.
2.2.2.2.1 Start the UniFlash Program and Choose the Correct LaunchPad™
Start the UniFlash program and begin a New Configuration (Figure 11) and select the LaunchPad™ MSP-
EXP432E401Y.
The connection type is automatically chosen based on the LaunchPad™ being used. Verify that the Texas
Instruments XDS110 USB Debug Probe is selected and press Start.
2.2.2.2.2 Choose the Firmware File and Flash the LaunchPad™
The firmware file is located in the folder Program Files (x86)\Texas Instruments\ADS1119\firmware. Use
the Browse button to browse to folder containing the firmware file. The firmware file can also be dragged
and dropped into the browse window provided in UniFlash.
When the desired firmware is selected, use the Load Image button to load the firmware into the
LaunchPad™.
Verify that the firmware installed successfully by checking the Console portion of the UniFlash tool at the
bottom of the GUI window.

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2.3 Step 3
After the firmware file has successfully downloaded to the LaunchPad™, unplug the USB cable from the
LaunchPad™. Further communication takes place using the USB connector located at the opposite end of
the LaunchPad™. For proper power to be supplied to the BOOSTXL-ADS1119, remove the jumper from
the middle of the LaunchPad™ at JP6 and place the jumper on the center pins of JP1; see Figure 16. This
jumper takes the available USB power from the bottom connector and applies the voltage to the remainder
of the board.
Before plugging the USB cable to the bottom LaunchPad™ USB connector, properly align the connectors
(as shown in Figure 4) and attach the BOOSTXL-ADS1119 BoosterPack™ to the bottom set of
connectors on the LaunchPad™.
Figure 4. LaunchPad™ and BoosterPack™ Combo
When the BoosterPack™ is attached, plug the USB cable into the bottom connector of the LaunchPad™
and also to the PC. The LaunchPad™ communication to the PC is USB communications device class
(CDC) using a virtual COM port. Windows®10 automatically installs the required driver. Earlier versions of
the operating system may require a manual driver installation. The required driver files can be found in the
installation directory Program Files (x86)/Texas Instruments/ADS1119/drivers.
2.4 Step 4
From the Windows Start menu, go to the Texas Instruments folder and under ADS1119 start the GUI
application. The communication should automatically connect. If the hardware does not connect, manually
try to make the connection by clicking on the connect icon in the lower left portion of the GUI. A different
COM port can be selected by using the information from Section 2.2.2.1.

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3 BOOSTXL-ADS1119 Hardware Overview
This section lists various onboard components that are used to interface analog inputs, analog reference,
digital interface, and power to the BOOSTXL-ADS1119 EVM. Figure 5 shows a top-level view of the
board.
Figure 5. BOOSTXL-ADS1119 Overview
3.1 Connectors for the Analog Input
The BOOSTXL-ADS1119 EVM is designed for easy interface to analog sources through a 100-mil header
(J5) or to a screw terminal block (J6). J6 also allows for an external reference input. Table 2 shows the
input configuration for J5 and Table 3 shows the configuration for J6. Both connectors are clearly labeled
on the PCB silkscreen for easy input connection identification.
Table 2. Header Input (J5)
J5 Connector Pin Description
J5:1 Analog input for A0 of the ADC
J5:2 Analog input for A1 of the ADC
J5:3 and J5:4 BoosterPack™ plug-in module ground
J5:5 Analog input for A2 of the ADC
J5:6 Analog input for A3 of the ADC
Table 3. Terminal Block Input (J6)
J6 Terminal Block Inputs Description
J6:1 BoosterPack™ plug-in module ground
J6:2 Analog input for A3 of the ADC
J6:3 Analog input for A2 of the ADC
J6:4 Analog reference input REFN
J6:5 Analog reference input REFP
J6:6 Analog input for A1 of the ADC
J6:7 Analog input for A0 of the ADC

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The analog inputs can range from GND up to AVDD, which is the analog supply voltage. A maximum of
four single-ended inputs, or two differential inputs may be applied to the ADS1119. The user can configure
the input channels through the ADS1119 BoosterPack™ GUI. Each of the analog inputs have a series 1-
kΩresistor with a 100-nF differential capacitor between inputs and a 10-nF common-mode capacitor to
GND for filtering noise and aliasing. Figure 27 provides a schematic that details the input filtering.
3.2 Voltage Reference
The ADS1119 contains an internal 2.048-V reference and no external reference is required. The analog
supply can also be used as reference input by installing a 0-Ωresistor at R7. An external reference can be
applied to the terminal block REFP and REFN connections available on J6 (see the analog input terminal
block in Figure 5). The external reference input is limited by a minimum of 0.75 V and a maximum of the
analog supply voltage (AVDD). The REFN input is connected to the board ground by default through the
0-Ωresistor R8.
3.3 Digital Interface
The BOOSTXL-ADS1119 interfaces to the MSP-EXP432E401Y LaunchPad™, which in turn
communicates with the computer through USB. The two devices are on the BoosterPack™ and they both
communicate using I2C. U4 is an EEPROM used to hold device and board manufacturing information. The
EEPROM information is not currently available to the GUI. U1 is the ADS1119 and communication from
the GUI allows for register read and write as well as ADC conversion data collection.
3.4 BOOSTXL-ADS1119 Digial I/O
The BOOSTXL-ADS1119 EVM supports the I2C digital interface and functional modes as described in the
ADS1119 datasheet. The LaunchPad™ operates at a 3.3-V logic and I/O level. The ADS1119 has both
DVDD and AVDD. DVDD is the digital supply and is fixed to the same voltage level as the LaunchPad™
processor so no level shifting is required. The I2C communication is through LaunchPad™ ports PN5
(SCL) and PN4 (SDA). GPIO pin control for the Reset pin of the ADS1119 is controlled by port PK6. The
Reset control pin defaults high (not in reset). GPIO port PK7 is an input port pin used to interrupt the
processor when a new conversion result is ready to be read from the ADS1119. Table 4 lists the port to
connector pin interface.
Table 4. MSP432E401Y Port to BoosterPack™ Interface
MSP-EXP432E401Y GPIO Port BOOSTXL-ADS1119 Connector
Pin
SCL (PN5 - Output) J1:9
SDA (PN4 - Input/Output) J1:10
RESET (PK6 - Output) J4:32
DRDY (PK7 - Input) J4:31

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3.5 Power Supply
Both the LaunchPad™ 3.3-V and 5-V supplies are used for the BOOSTXL-ADS1119. The digital supply is
3.3 V and supplies the ADS1119 DVDD supply input. AVDD is the ADS1119 analog supply and can
accommodate either 3.3-V or 5-V operation. The choice of analog supply voltage is selected by jumper
JP2. Figure 6 shows that JP2:1-2 selects the 5-V supply source and JP2:2-3 selects the 3.3-V source.
Figure 6. Analog Supply Jumper
The 3.3-V source comes directly from the LaunchPad™ and when available on the BOOSTXL-ADS1119
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 a 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, LED D1 lights up indicating the supply is
available. TP1 can be used to monitor the AVDD supply voltage. Figure 6 shows jumper placement and
LED locations.
4 Setup Details
Getting the BOOSTXL-ADS1119 and MSP-EXP432E401Y LaunchPad™ combination to communicate
with the PC requires firmware to be installed in the LaunchPad™; see Section 4.2. This firmware is made
available as part of the ADS1119 BoosterPack™ GUI software installation. Depending on which operating
system is used, driver installation may be needed. The drivers are also included as a part of the GUI
software installation.
4.1 ADS1119 BoosterPack™ GUI Installation
Download and install the GUI from the BOOSTXL-ADS1119 tools folder. The license agreements must be
accepted or the software will not install. Follow all remaining on-screen instructions to complete the
installation.
A cloud version of the GUI is also available from dev.ti.com in the software gallery.

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4.2 Flash the Firmware to the LaunchPad™
There are two possible methods to flash the firmware to the LaunchPad™. The first method involves using
the BOOSTXL-ADS1119 GUI software and the second method uses the UniFlash program.
4.2.1 Firmware Download Using the GUI Software
The required BOOSTXL-ADS1119 firmware and the programming functionality for downloading the
firmware to the LaunchPad™ is included as a part of the GUI software. The process involves connecting
the proper COM port required for programming the device. The Connect icon is located in the lower left
corner of GUI window. If the correct serial COM port cannot be found, the desired port can be selected
from the Options drop-down menu shown in Figure 7 and selecting Serial Port.
Figure 7. Serial Port Selection
Manual selection of the COM port may be required for the GUI to program the LaunchPad™. The correct
COM port used for device programming can be found from within Windows by using Device Manager or
Devices and Printers. Search for the XDS110 device, then highlight and right-click the device name to
select Properties. On the Hardware tab there should be two COM ports listed. The correct COM port is
listed as XDS110 Class Auxiliary Data Port.

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If a change of COM port is required, select Serial Port from the Options menu. The serial port
configuration shown in Figure 8 displays a drop-down menu for available COM Ports and Baud Rates
settings. Select the desired COM port from the drop-down menu. Use the recommended baud rate setting
and click OK.
Figure 8. Serial Port Settings
From the File drop-down menu shown in Figure 9, select Program Device from the menu options. If the
GUI detects the LaunchPad™, the firmware is automatically programmed into the LaunchPad™. The
connect icon shown in the lower left corner of the GUI may show a line through the connect icon. The icon
with the line through it is showing that the device is connected but does not communicate using this COM
port for changing device settings or collection of data. The COM port currently selected is for device
programming only.
Figure 9. Program the Device

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When the firmware is successfully downloaded (see Figure 10), the GUI software should now be able to
communicate to the LaunchPad™. Communication to the BoosterPack™ requires the use of a different
COM port than the one used for programming. The correct COM port for communication can be chosen
when all the steps in Section 4 are complete.
Figure 10. Programming Successful
4.2.2 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.
4.2.2.1 Flashing the Firmware
When the UniFlash program is accessed, either by cloud or download, start the process by first plugging
in the LaunchPad™ to the XDS110 programming connector at the top of the LaunchPad™. A green LED
lights up indicating that power is available and the cloud agent driver recognizes and is installing the
appropriate drivers for the LaunchPad™. For any issues with the installation or operation of the UniFlash
program, click on the Help icon in the UniFlash menu bar.
1. In the UniFlash program, select the MSP-EXP432E401Y LaunchPad™ from the drop down list as
illustrated in Figure 11 to start a New Configuration.

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Figure 11. UniFlash: New Configuration
2. As shown in Figure 12, the Selected Connection automatically selects the Texas Instruments XDS110
USB Debug Probe. Press Start to continue.
Figure 12. UniFlash: Choose Connection

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3. From the Program tab shown in Figure 13,Browse to the Flash Image to be installed. The firmware file
is found under the Program Files (x86)\Texas Instruments\ADS1119\fimware folder.
Figure 13. UniFlash: Browse to Firmware
4. When the flash image file is located, as shown in Figure 14, press the Load Image button to start the
firmware download.
Figure 14. UniFlash: Load Image

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5. The console at the bottom of the UniFlash window shows the result of the loading process. Figure 15
shows the correct response of [SUCCESS] Program Load completed successfully. If this response is
not shown or an error message is displayed try the Load Image button again. You may have to unplug
and plug the USB cable to the LaunchPad™ again to reset communication.
Figure 15. UniFlash: Successful Download

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4.2.2.2 LaunchPad™ Power Configuration
To reduce the number of cables required to communicate and power the BOOSTXL-ADS1119, the USB
connection at U7 can be used as the supply source for the LaunchPad™ as well as the communication
connection for the CDC virtual COM port to the GUI. Figure 16 shows that to correctly route the power,
use the jumper installed on JP6 and connect to JP1 at the 5V-OTG (center) position. There should now be
two jumpers on JP1.
Figure 16. Power Jumper Change
4.3 Driver Installation (If Required)
For Windows 10, the enumeration of a CDC device automatically installs the required driver on
enumeration. For earlier versions of the operating system a communication device class driver (CDC) may
need to be installed. If the driver shows as unknown, manually install the driver from Program Files
(x86)/Texas Instruments/ADS1119/drivers. Go to the Control Panel and select Device Manager. Right click
on the unknown device and select Update driver. Choose the selection Browse my computer for driver
software. Browse to the driver folder location and choose Next to locate the correct driver.
5 ADS1119 BoosterPack™ GUI Operation
Figure 17 illustrates the home page of the ADS1119 BoosterPack™ GUI. This page provides a high-level
overview of the ADS1119 device. Starting at the upper left portion of the GUI are various icons that refer
to particular pages within the GUI application. Along with the home page is the quick start, setup, chart,
register, and collateral pages. Each page can be selected by clicking on the appropriate icon. When the
MSP-EXP432E401Y LaunchPad™ is combined with the BOOSTXL-ADS1119 BoosterPack™ and
connected to the PC with the micro USB cable, the board is detected and connected. The connection
status is shown at the lower left corner of the GUI.

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5.1 Home Page
The Home page is the starting point of the GUI application. The five other pages can be selected from the
bottom portion of the page, or from the icons along the left-hand side of the window. By clicking on Learn
more, the ADS1119 features and functional diagram will be displayed in place of the page control tabs.
When clicking on Show Less the page control tabs are once again displayed.
Figure 17. Home Page
5.2 Quick Start Page
The Quick Start page (Figure 18) shows a minimal view of the startup procedure to get the system up and
running. For specific details see Section 4.
Figure 18. Quick Start Page

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5.3 Settings Page
The Settings Page (Figure 19) shows that there is only one control setting on the Settings page. The
control can be used to force a hardware reset to the ADS1119. Clicking the Reset button twice forces the
reset pin low with the first click, and then returns the pin high with the second button click.
Figure 19. Settings Page
5.4 Chart Page
There is only one Chart page option available (Figure 20) and that is the Time Domain Analysis plot. For
any data to be displayed at the data rate specified in the register setting requires the Conversion Mode
setting in the ADS1119 register to be set to Continuous.
5.4.1 Time Domain Analysis
The plot begins when the START button in pressed. When the chart begins to display data, the START
button changes to STOP. Data are displayed on the chart until the STOP button is pressed. There are two
ways the data can be displayed. One option is to display by voltage and the second option displays by the
number of codes. The voltage option is the default, and the voltage value displayed depends on the gain
applied in the register setting and the reference voltage being used. The default reference voltage
displayed is the internal reference voltage of the ADS1119. If another reference source is used, update
the reference voltage box to accurately display the voltage value determined at the ADC input.
Additional information is also displayed above the chart in terms of ADC conversion codes. This
information includes the number of samples, mean value, standard deviation, peak-to-peak, effective
resolution and noise-free bits of the data set collected.

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Figure 20. Chart Page
5.5 Register Map Page
The Register Map page (Figure 21) displays the contents of the ADS1119 registers. Only the first register
can be written. The second register is a read-only register. Register settings can be changed using the
drop-down lists and click boxes. Information regarding the selections and options can be displayed by
using the cursor to hover over the various options.
Figure 21. Register Map Page

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5.6 Collateral Page
The Collateral Page (Figure 22) provides information and links to various application notes and any other
useful information as applicable to the GUI or the BOOSTXL-ADS1119.
Figure 22. Collateral Page