Texas Instruments BoosterPack BOOST-ADS7042 User manual

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BOOST-ADS7042 BoosterPack™ Plug-In Module
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User's Guide
SBAU273–June 2016
BOOST-ADS7042 BoosterPack™ Plug-In Module
This user's guide describes the characteristics, operation, and use of the BOOST-ADS7042
BoosterPack™ plug-in module, a quick and low-cost solution to evaluate the ADS7042. This document
also includes the schematic, printed circuit board (PCB) layout, and a bill of materials (BOM).
Contents
1 BOOST-ADS7042 BoosterPack™ Overview ............................................................................ 2
2 ADS7042 Information ....................................................................................................... 3
3 Getting Started............................................................................................................... 3
4 Using the BOOST-ADS7042 with the MSP430FR4133 LaunchPad™ Development Kit .......................... 5
5 Schematic, PCB Layout, and Bill of Materials ........................................................................... 9
6 References ................................................................................................................. 15
7 Appendix A.................................................................................................................. 15
List of Figures
1 BOOST-ADS7042 BoosterPack™ Overview ............................................................................ 2
2 Jumper Settings for the MSP430FR4133 LaunchPad™ Development Kit........................................... 3
3 Launching the Code Composer Studio™ Cloud......................................................................... 4
4 Importing the Energia Sketch File......................................................................................... 4
5 Loading the Energia Sketch File (Firmware) Into the MSP430FR4133 LaunchPad™ Development Kit ........ 5
6 Connecting the MSP430FR4133 LaunchPad™ Development Kit to the BOOST-ADS7042 ...................... 6
7 Configuring Jumper J6...................................................................................................... 7
8 Software Flow Diagram for the BOOST-ADS7042...................................................................... 8
9 Connecting to the COM Port............................................................................................... 9
10 Selecting the COM Port..................................................................................................... 9
11 Debug Window............................................................................................................... 9
12 Schematic ................................................................................................................... 10
13 PCB Top Layer ............................................................................................................. 11
14 PCB Bottom Layer ......................................................................................................... 12
15 Step I for the TI Cloud Agent Installation ............................................................................... 15
16 Step II for the TI Cloud Agent Installation............................................................................... 15
17 Step III for the TI Cloud Agent Installation.............................................................................. 16
18 Step IV for the TI Cloud Agent Installation.............................................................................. 16
19 Step V for the TI Cloud Agent Installation .............................................................................. 17
20 Step VI for the TI Cloud Agent Installation.............................................................................. 17
List of Tables
1 Jumper Settings for the MSP430FR4133 LaunchPad™ Development Kit........................................... 3
2 Bill of Materials ............................................................................................................. 13

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1 BOOST-ADS7042 BoosterPack™ Overview
1.1 Description
The BOOST-ADS7042 BoosterPack™ plug-in module provides a quick and low-cost solution to evaluate
the ADS7042. To quickly get started, a firmware for this BoosterPack™ is available for the
MSP430FR4133 LaunchPad™ development kit (MSP-EXP430FR4133). Figure 1 shows an overview of
the BoosterPack™ hardware.
Figure 1. BOOST-ADS7042 BoosterPack™ Overview
1.2 Features
• Designed using the ADS7042 precision analog-to-digital converter (ADC), the OPA316 precision ADC
driver, and the REF3330 precision voltage reference
• Nanowatt power consumption of the ADS7042 ADC when sampling at 1 kSPS
• ADC sampling rates between 1 kSPS and 1 MSPS
• SMA jack for an optional external analog signal input
• User-programmable push button and LEDs
• On-board ambient light sensor

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2 ADS7042 Information
The ADS7042 is a 12-bit, 1-MSPS ADC. The device consumes 690 µW of power at 3-V AVDD and at a
throughput of 1 MSPS. The ADS7042 is available in 8-pin, miniature, leaded, VSSOP and 8-pin X2QFN
packages. The ADS7042 datasheet (SBAS608) contains all relevant analog and digital electrical
information pertaining to the device.
3 Getting Started
3.1 Configuring the LaunchPad™ Development Kit
The BOOST-ADS7042 functions with default jumper settings of the MSP430FR4133 LaunchPad™
development kit. Figure 2 and Table 1 provide the default jumper settings for the MSP430FR4133
LaunchPad™ development kit.
Figure 2. Jumper Settings for the MSP430FR4133 LaunchPad™ Development Kit
Table 1. Jumper Settings for the MSP430FR4133 LaunchPad™ Development Kit
Jumper Position
5V Installed
GND Installed
3V3 Installed
RTS Not installed
CTS Not installed
RXD Installed
TXD Installed
SBWTDIO Installed
SBWTCK Installed

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3.2 Obtaining Firmware
Download the firmware for the BOOST-ADS7042 with the MSP430FR4133 LaunchPad™ development kit
from the SLYC144 zip file. The zip file downloaded must be loaded into the MSP430FR4133
LaunchPad™ development kit as per the steps described in Section 3.2.1.
3.2.1 Downloading Firmware
1. Extract and save the BOOST-ADS7042_Firmware_xx.ino file from the SLYC144 zip file.
2. Connect the MSP430FR4133 LaunchPad™ development kit to a PC using a USB cable; see Figure 2.
Verify that jumpers are installed as per Table 1.
3. Go to dev.ti.com using either Chrome™ or Firefox®.
4. Click on the Code Composer Studio™ (CCS) cloud logo to launch the Code Composer Studio™
Cloud, as shown in Figure 3.
Figure 3. Launching the Code Composer Studio™ Cloud
5. Login with your myTI™ account.
6. Install the TI Cloud Agent (for the first time only) as described in Section 7.
7. Import the Energia Sketch file (BOOST-ADS7042_Firmware_xx.ino), as shown in Figure 4, that was
extracted and saved in step 1.
Figure 4. Importing the Energia Sketch File

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8. Load the Energia Sketch file (BOOST-ADS7042_Firmware_xx.ino) into the MSP430FR4133
LaunchPad™ development kit by clicking Run, as shown in Figure 5.
Figure 5. Loading the Energia Sketch File (Firmware) Into the
MSP430FR4133 LaunchPad™ Development Kit
4 Using the BOOST-ADS7042 with the MSP430FR4133 LaunchPad™ Development Kit
After downloading the firmware to the MSP430FR4133 LaunchPad™ development kit, the BoosterPack™
plug-in module must be connected to the LaunchPad™ development kit; see Figure 6.
• Verify that the 3V3 supply pin on the BoosterPack™ plug-in module mates with the 3V3 supply pin on
the LaunchPad™ development kit.
• Connect the LaunchPad™ development kit to a PC using a USB cable.
4.1 Changing the Sampling Rate of the ADS7042
• Press the S2 switch on the LaunchPad™ development kit to increase the sampling rate of the
ADS7042.
• Press the S1 switch on the LaunchPad™ development kit to decrease the sampling rate of the
ADS7042.
4.2 Changing the Display
• Press the S1 switch on the BoosterPack™ plug-in module to change the display from power
consumption in µW to ADC code in hexadecimal.

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Figure 6. Connecting the MSP430FR4133 LaunchPad™ Development Kit to the BOOST-ADS7042

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4.3 Measuring the Output of the Ambient Light Sensor
The output of the ambient light sensor can be directly measured with the ADS7042 by installing jumper J6
between pin 1 and pin 2 of J6, as shown in Figure 7. The light intensity can be estimated from Equation 1.
Figure 7. Configuring Jumper J6
where
• IPC = 23 µA / 100 Lux for the ambient light sensor TEMT6200FX01 (U4) (1)
4.4 Applying an External Analog Input
An external analog input can be applied on the SMA connector J10 on the BoosterPack™ plug-in module.
The analog input must be between 0 V and 3 V. The external analog input is provided to the noninverting
input of the OPA316 amplifier (U9) that drives the analog input of the ADS7042.
4.5 Measuring Power Consumption
The BoosterPack™ plug-in module has the provision of measuring the sum of power consumption of the
REF3330 (U1) and the analog power consumption of the ADS7042 (U6). The power measured is
displayed on the LCD of the MSP430FR4133 LaunchPad™ development kit. Equation 2 provides an
estimate of the measured power.
where
• Fsis the sampling rate of the ADS7042 in kSPS. (2)

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4.6 Software Flow Diagram for the BOOST-ADS7042
Figure 8 shows the software flow for the firmware of the BOOST-ADS7042.
Figure 8. Software Flow Diagram for the BOOST-ADS7042

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4.7 UART Communication
The output codes from the ADS7042 are sent over the universal asynchronous receiver, transmitter
(UART) to the PC through the serial communication port of the MSP430FR4133 LaunchPad™
development kit. The codes can be captured in the Code Composer Studio™ Cloud by following these
steps:
• Connect the LaunchPad™ development kit to the BoosterPack™ plug-in module; see Figure 6.
• Connect the LaunchPad™ development kit to a PC with a USB cable.
• Launch the Code Composer Studio™ Cloud and run the firmware as described in step 8 of
Section 3.2.1.
• Click on the Connect COM port from the Target menu, as shown in Figure 9.
Figure 9. Connecting to the COM Port
• Select the COM port for MSP430FR4133 LaunchPad™ development kit, as shown in Figure 10.
Figure 10. Selecting the COM Port
• Click Ok and the data are displayed in the Debug window, as shown in Figure 11.
Figure 11. Debug Window
5 Schematic, PCB Layout, and Bill of Materials
This section contains the block diagram, schematic diagram, printed circuit board (PCB) layout, and a
complete bill of materials for the BOOST-ADS7042 BoosterPack™ plug-in module.
5.1 Schematic
Figure 12 illustrates the schematic of the BOOST-ADS7042 BoosterPack™ plug-in module.

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Figure 12. Schematic