Texas Instruments OPT3006EVM User manual

1
SBOU181–October 2016
Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
PicoStar is a trademark of Texas Instruments.
Windows, Windows 7 are registered trademarks of Microsoft Corporation.
All other trademarks are the property of their respective owners.
User's Guide
SBOU181–October 2016
OPT3006EVM User's Guide
This user’s guide describes the characteristics, operation, and use of the OPT3006EVM evaluation
module. The user's guide discusses how to set up and configure the software and hardware, and reviews
various aspects of the program operation. Throughout this document, the terms evaluation board,
evaluation module, and EVM are synonymous with the OPT3006EVM. This document also includes an
electrical schematic, printed circuit board (PCB) layout drawings, and a parts list for the EVM.
Contents
1 Overview ..................................................................................................................... 3
1.1 OPT3006EVM Kit Contents ....................................................................................... 3
1.2 Related Documentation from Texas Instruments............................................................... 4
2 Hardware...................................................................................................................... 5
2.1 Theory of Operation ................................................................................................ 6
2.2 Hardware Overview................................................................................................. 6
3 Software....................................................................................................................... 8
3.1 Hardware Requirements........................................................................................... 8
3.2 Software Installation................................................................................................ 8
3.3 Launching the Software .......................................................................................... 10
3.4 Software Operation ............................................................................................... 11
4 Schematic, PCB Layout, and Bill of Materials.......................................................................... 15
4.1 Schematic .......................................................................................................... 15
4.2 PCB Layout ........................................................................................................ 17
4.3 Bill of Materials .................................................................................................... 20
List of Figures

www.ti.com
2SBOU181–October 2016
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
1 Hardware Included With Kit ................................................................................................ 3
2 Hardware Setup.............................................................................................................. 5
3 OPT3006EVM Block Diagram ............................................................................................. 6
4 Typical Hardware Connection.............................................................................................. 7
5 Typical Response After Connecting OPT3006EVM to Computer..................................................... 7
6 Software-Installation Files .................................................................................................. 8
7 Software-Installation Launch............................................................................................... 9
8 Software-Installation Prompts.............................................................................................. 9
9 Main Operation Screen.................................................................................................... 10
10 Hardware Error Message ................................................................................................. 10
11 Power Indicators............................................................................................................ 11
12 I2C Address Selection...................................................................................................... 11
13 Register x00 Button and Recorded Values............................................................................. 12
14 Register x01 Control and Status Register Bits......................................................................... 12
15 Registers x02 and x03 Lux Limit Controls .............................................................................. 12
16 Simulated Screen Backlight Dimmer .................................................................................... 12
17 Lux vs Sample Number Plot.............................................................................................. 13
18 Re-Initialize Button......................................................................................................... 13
19 Data Logging Setup and Enable ......................................................................................... 14
20 Read All Button on the Register Map Tab with Example Output .................................................... 14
21 OPT3006EVM Schematic, Including MHR046 FPCB................................................................. 15
22 FPCB MHRS046 Schematic, Containing the OPT3006 .............................................................. 16
23 PCB Top-Layer Assembly Drawing...................................................................................... 17
24 PCB Bottom-Layer Assembly Drawing.................................................................................. 17
25 PCB Top Layer ............................................................................................................. 18
26 PCB Bottom Layer ......................................................................................................... 18
27 MHR046 FPCB Top Layer................................................................................................ 19
28 MHR046 FPCB Bottom Layer ............................................................................................ 19
29 MHR046 FPCB Assembly Drawing...................................................................................... 19
List of Tables
1 OPT3006EVM Kit Contents ................................................................................................ 3
2 Related Documentation..................................................................................................... 4
3 OPT3006EVM BOM ....................................................................................................... 20
4 MHR046 FPCB BOM ..................................................................................................... 20

www.ti.com Overview
3
SBOU181–October 2016
Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
1 Overview
The OPT3006 is an ambient light sensor (ALS) with a digital output integrated circuit in an ultra-thin
PicoStar™ package form factor, allowing the device to fit into tiny spaces. The OPT3006 is mounted on a
flexible PCB (FPCB), which contains an example cutout that allows light to illuminate the sensor. The
OPT3006 uses a two-wire interface that works with the I2C protocol, making this device ideal for many
applications. The OPT3006EVM is a Platform for evaluating the performance of the OPT3006 device
under various conditions. The OPT3006EVM consists of two PCBs. The first PCB is the SM-USB-DIG
Platform that communicates with the computer, provides power, and sends and receives appropriate
digital signals. The second PCB is the OPT3006EVM: a rigid PCB with a mounted FPCB that contains the
OPT3006 device.
1.1 OPT3006EVM Kit Contents
Table 1 summarizes the contents of the OPT3006EVM kit. Figure 1 shows the included hardware. Contact
the Texas Instruments Product Information Center nearest you if any component is missing. It is highly
recommended that you also check the OPT3006 product folder on the TI web site at www.ti.com to verify
you have the latest versions of the released software.
Table 1. OPT3006EVM Kit Contents
Item Quantity
OPT3006EVM 1
SM-USB-DIG Platform 1
USB extension cable 1
Figure 1. Hardware Included With Kit

Overview www.ti.com
4SBOU181–October 2016
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
1.2 Related Documentation from Texas Instruments
The following documents provide information regarding Texas Instruments' integrated circuits used in the
assembly of the OPT3006EVM. This user's guide is available from the TI web site under literature number
SBOU181. Any letter appended to the literature number corresponds to the document revision that is
current at the time of the writing of this document. The latest revision can be found by clicking the link
Table 2 and is also available from the TI web site, the Texas Instruments' Literature Response Center at
[phone], and the Product Information Center at [phone]. When ordering, identify the
document by both title and literature number.
Table 2. Related Documentation
Document Literature Number
OPT3006 product data sheet SBOS698
SM-USB-DIG_Platform user's guide SBOU098

www.ti.com Hardware
5
SBOU181–October 2016
Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
2 Hardware
Figure 2 shows the system setup for the OPT3006EVM. The computer runs the graphical user interface
(GUI) software that communicates with the SM-USB-DIG Platform over a USB connection. The SM-USB-
DIG Platform translates the USB commands from the computer into power, I2C, SPI, and general-purpose
input/output (GPIO) commands for the OPT3006EVM. The OPT3006EVM does not require any additional
components to operate.
Figure 2. Hardware Setup

OPT3006
FPCB:
MHR04610-Pin
Female
SM-USB-Dig
Connector
Five
100-mil spaced
test points
I2C Interface and ground
Interrupt
VDUT Supply
(Switched +3.3 V Power)
Hardware www.ti.com
6SBOU181–October 2016
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
2.1 Theory of Operation
A block diagram of the OPT3006EVM hardware is shown in Figure 3. The OPT3006EVM contains an
FPCB (labeled MHR046), with a mounted OPT3006. This FPCB has a cutout that allows light to pass
through and illuminate the sensor. The OPT3006EVM also contains connections for the power, I2C, and
an interrupt signal. For evaluation purposes, the board also has a 5-pin header that allows the
OPT3006EVM to be connected to hardware other than the SM-USB-DIG Platform.
Figure 3. OPT3006EVM Block Diagram
2.2 Hardware Overview
If not already assembled, the basic hardware setup for the OPT3006EVM involves connecting the
OPT3006EVM to the SM-USB-DIG Platform and then connecting the USB cable. This section presents
the details of this procedure.
CAUTION
Many of the components on the OPT3006EVM are susceptible to damage by
electrostatic discharge (ESD). Customers are advised to observe proper ESD
handling precautions when unpacking and handling the EVM, including the use
of a grounded wrist strap at an approved ESD workstation.

www.ti.com Hardware
7
SBOU181–October 2016
Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
2.2.1 Typical Hardware Setup
Connect the right-angle female socket on the OPT3006EVM to the right-angle male header on the SM-
USB-DIG Platform, as shown in Figure 4. Take special care to make sure that the two 10-pin sockets
directly align with each other. Plug the female USB-A cable to the SM-USB-DIG Platform and then plug
the male USB-A cable into the computer.
NOTE: Always connect the two boards together before connecting the USB cable to avoid any
issues if the connectors are misaligned.
Figure 4. Typical Hardware Connection
Figure 5 shows the typical response when the SM-USB-DIG is plugged into the USB port of the computer
for the first time. Typically, the computer responds with a Found New Hardware, USB Device pop-up
dialog window. The pop-up window then typically changes to Found New Hardware, USB Human Interface
Device. This pop-up indicates that the device is ready to be used. The SM-USB-DIG Platform uses the
human interface device drivers that are part of the Windows®operating system.
Figure 5. Typical Response After Connecting OPT3006EVM to Computer
In some cases, the Add Hardware Wizard appears. If this installation prompt occurs, allow the device
manager to install the human interface device drivers by clicking Yes at each request to install the drivers.

Software www.ti.com
8SBOU181–October 2016
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
3 Software
This section describes the installation and operation of the OPT3006EVM software. The OPT3006 is
essentially identical to the OPT3001, but in a smaller package form factor; thus, the OPT3001EVM
software is used to interact with the OPT3006EVM.
3.1 Hardware Requirements
The OPT3006EVM software has been tested on the Windows 7®operating system (OS) with United
States regional settings. The software should function correctly on other Windows operating systems.
3.2 Software Installation
The OPT3006EVM evaluation software is available on the OPT3006EVM product folder at www.ti.com as
a zip file. To install the software, download the zip file to your computer, and uncompress. The
uncompressed folder contains the files shown in Figure 6. Launch the OPT3006EVM installation file,
setup.exe, as shown in Figure 6 . Remember that the software references the OPT3001, but does work
with the OPT3006.
Figure 6. Software-Installation Files

www.ti.com Software
9
SBOU181–October 2016
Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
The OPT3006EVM software then begins the installation process, as shown in Figure 7.
Figure 7. Software-Installation Launch
Follow the prompts as shown in Figure 8 to install the OPT3006EVM software.
Figure 8. Software-Installation Prompts
The OPT3006EVM GUI software is now installed.

Software www.ti.com
10 SBOU181–October 2016
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
3.3 Launching the Software
With the OPT3006EVM properly connected (see Figure 4), launch the EVM GUI software from the
Windows Start menu. It is located in a folder titled OPT3006EVM. The software launches with a screen
similar to that shown in Figure 9.
Figure 9. Main Operation Screen
If the message shown in Figure 10 appears when the OPT3006EVM GUI software is launched, disconnect
all components of the OPT3006EVM kit, and repeat the hardware assembly and connection instructions.
Figure 10. Hardware Error Message

www.ti.com Software
11
SBOU181–October 2016
Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
3.4 Software Operation
This section primarily discusses how to operate the OPT3006EVM software. The GUI has a primary
window that is used to configure and read from the OPT3006EVM, along with two other windows that are
used to access different features of the OPT3006EVM. Basic GUI functionality and a description of the
tabs are also presented in this section.
3.4.1 Getting Started
With the hardware properly connected and the EVM software installed and operating, check to see that
the power to the device is turned on by looking at the LED on the SM-USB-DIG Platform and at the VDUT
indicator on the SM-USB-DIG tab in the GUI software, as shown in Figure 11.
Figure 11. Power Indicators
If the hardware address of the OPT3006EVM on the EVM board has not been reconfigured, then the
address fields shown on the SM-USB-DIG tab in Figure 12 are set up correctly.
Figure 12. I2C Address Selection
To quickly start using the device, leave the default settings selected, and click the Write Reg x01 button,
and then click the Run Continuously flip switch. The software then begins capturing lux data from the
device. This quick start is a good test to make sure everything is operational. To stop the computer from
capturing data and plotting, click Run Continuously again.

Software www.ti.com
12 SBOU181–October 2016
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
3.4.2 Feature Descriptions
Register x00 is a read-only register that holds the range and converted value. These data are used (per
the OPT3006 data sheet) to compute the lux output, labeled Reg x00 Lux in Figure 13. Click the Read
Reg x00 button to update these fields and the plot with the latest values from the OPT3006EVM.
Figure 13. Register x00 Button and Recorded Values
Register x01 configures the OPT3006 and provides feedback about the state of the device; the bit names
and full descriptions are shown in the OPT3006 data sheet. Each of the configurable, read and write bits
has a drop-down menu to select the appropriate value. Each of the read-only status bits has an
associated small, green indicator. As shown in Figure 14, two buttons are provided to operate register x01
because some of the bits have read and write capability. Note that in Figure 14, the Lux Full Scale Range
selection field has four identical automatic range modes: 0x0C-0x0F. Also, the Mode selection field has
two identical continuous sampling options: 0x02 and 0x03.
Figure 14. Register x01 Control and Status Register Bits
Registers x02 and x03 enforce low and high limits, respectively, on the output ranges (exponent) and
values (mantissa) from the OPT3006. These registers are programmed with the appropriate fields, as
shown in Figure 15. Change the values of the data in these fields to write and read the values from the
OPT3006; no button press is required. However, if values are manually entered, exit the text field for the
field to update.
Figure 15. Registers x02 and x03 Lux Limit Controls
There is a simulated screen backlight dimmer represented by a rectangle, shown in Figure 16. This
rectangle changes from black, through 254 shades of grey, to white depending on the value of lux
measured by the OPT3006. It shows a brighter backlight for high-lux situations and a dim backlight for
low-lux situations. The low limit (darkest backlight) is always 0, and the high limit (brightest backlight) can
be adjusted with the Lux for White numeric field.
Figure 16. Simulated Screen Backlight Dimmer

www.ti.com Software
13
SBOU181–October 2016
Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
The software provides a plot of the register x01 output labeled Lux vs Sample Number, as shown in
Figure 17. As readings are collected, the plot is updated with those values. The y-axis is autoscaled to
show the magnitude of the lux value recorded, and has a visible history of 100 samples along the x-axis.
The plot can be reset by returning to the SM-USB-DIG tab and clicking the Re-Initialize button, as shown
in Figure 18. Access the plot axis range and formatting by right-clicking the plot.
Figure 17. Lux vs Sample Number Plot
Figure 18. Re-Initialize Button

Software www.ti.com
14 SBOU181–October 2016
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
There is a data logging feature included in the software, as shown in Figure 19. This feature allows the
user to record the date and time from the host computer, along with the measured lux value reported by
the device. After a destination file is selected by clicking Select a File/Path, turning on the Logging On/Off
selector switch appends data to that file in .tab format.
Figure 19. Data Logging Setup and Enable
Under the final tab, Register Map, shown in Figure 20, there is a button labeled Read All. Clicking this
button reads registers x00 through x0F and displays the results to the Register Table spreadsheet. In this
way, all register values, including the values of x0E and x0F, can be easily verified to match the values
shown in the data sheet.
Figure 20. Read All Button on the Register Map Tab with Example Output

Non-
Functional
Mechanical
Reference
www.ti.com Schematic, PCB Layout, and Bill of Materials
15
SBOU181–October 2016
Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
4 Schematic, PCB Layout, and Bill of Materials
4.1 Schematic
Figure 21 shows the complete schematic of the OPT3006EVM. SDA and SCK are pulled up by the SM-
USB-DIG Platform so there are no pull-up resistors present. R2 is a pull-up resistor for the interrupt signal.
C1 is a bypass capacitor for VDUT, and R4 is a jumper to tie the address pin to ground. If another
address is desired, remove R4 and install a wire to the pad or via, and then to the appropriate signal
source.
Figure 21. OPT3006EVM Schematic, Including MHR046 FPCB
An OPT3006 with no electrical connection, marked with Non-Functional Mechanical Reference, is
mounted onto the OPT3006EVM for size and visual evaluation; it is more difficult to evaluate the thinness
of the functional OPT3006 because of the placement. The functional OPT3006 is mounted on an FPCB
labeled MHR046, and is mounted on the back side of the board so that the LED light from the SM-USB-
DIG Platform is directed away from the device. Also, no additional LEDs are installed on the test board in
order to reduce total ambient light around the device. The back side of the board is mostly planar;
mounting holes are included to accommodate evaluation.
Figure 22 shows the schematic for MHR046.

Schematic, PCB Layout, and Bill of Materials www.ti.com
16 SBOU181–October 2016
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
Figure 22. FPCB MHRS046 Schematic, Containing the OPT3006

MHR046
www.ti.com Schematic, PCB Layout, and Bill of Materials
17
SBOU181–October 2016
Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
4.2 PCB Layout
Figure 23 and Figure 24 show the assembly drawings of the top and bottom PCB layers, respectively.
Figure 23. PCB Top-Layer Assembly Drawing
Figure 24. PCB Bottom-Layer Assembly Drawing

Schematic, PCB Layout, and Bill of Materials www.ti.com
18 SBOU181–October 2016
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
Figure 25 and Figure 26 show the top and bottom PCB layers of the EVM, respectively.
Figure 25. PCB Top Layer
Figure 26. PCB Bottom Layer

www.ti.com Schematic, PCB Layout, and Bill of Materials
19
SBOU181–October 2016
Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
Figure 27 and Figure 28 show the top and bottom layers of the MHR046 FPCB, respectively. Figure 29
shows the FPCB assembly drawing.
Figure 27. MHR046 FPCB Top Layer
Figure 28. MHR046 FPCB Bottom Layer
Figure 29. MHR046 FPCB Assembly Drawing

Schematic, PCB Layout, and Bill of Materials www.ti.com
20 SBOU181–October 2016
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
OPT3006EVM User's Guide
4.3 Bill of Materials
Table 3 lists the bill of materials (BOM) for the OPT3006EVM.
Table 3. OPT3006EVM BOM
Qty RefDes Description Part Number MFR
1 C1 CAP, CERM, 0.1uF, 50V, +/-10%, X7R, 0805 08055C104KAT2A AVX Corp.
1 J1 Receptacle, 50mil 10x1, R/A, TH 851-43-010-20-001000 Mill-Max
1 R1 RES, 0 ohm, 5%, 0.125W, 0805 CRCW08050000Z0EA Vishay Dale
1 R2 RES, 10k ohm, 5%, 0.125W, 0805 CRCW080510K0JNEA Vishay Dale
1 'XU1 FPCB containing OPT3006 MHR046 Texas Instruments
Table 4 lists the bill of materials for the FPCB, MHR046.
Table 4. MHR046 FPCB BOM
Qty RefDes Description Part Number MFR
1 U1 OPT3006 Ambient Light Sensor, OPT3006YMF Texas Instruments