Texas Instruments BP-DAC11001EVM User manual

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BP-DAC11001EVM
User's Guide
SLAU806–October 2019
BP-DAC11001EVM
This user’s guide describes the characteristics, operation, and use of the BP-DAC11001 evaluation
module (EVM) BoosterPack™ plug-in module. This EVM is designed to evaluate the performance of the
DAC11001 buffered voltage output DAC in a variety of configurations. Throughout this document, the
terms evaluation board, evaluation module, and EVM are synonymous with the BP-DAC11001EVM. This
document includes a schematic, reference printed-circuit board (PCB) layouts, and a complete bill of
materials.
Contents
1 Overview ..................................................................................................................... 3
1.1 Kit Contents ......................................................................................................... 3
1.2 Related Documentation from Texas Instruments .............................................................. 3
2 System Setup ................................................................................................................ 4
2.1 Software Setup ..................................................................................................... 4
2.2 Hardware Setup .................................................................................................... 6
3 Detailed Description......................................................................................................... 8
3.1 Hardware Description ............................................................................................. 8
3.2 Software Description ............................................................................................. 10
4 Schematic, PCB Layout, and Bill of Materials.......................................................................... 16
4.1 BP-DAC11001EVM Schematic ................................................................................. 16
4.2 PCB Layout ........................................................................................................ 20
4.3 BP-DAC11001EVM Bill of Materials............................................................................ 23
List of Figures
1 BP-DAC11001EVM Software Setup ...................................................................................... 4
2 Software Installation Path .................................................................................................. 4
3 Launchpad Setup............................................................................................................ 5
4 TI Cloud Agent Installation ................................................................................................. 5
5 Hardware Setup.............................................................................................................. 6

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6 BP-DAC11001EVM Hardware Block Diagram........................................................................... 8
7 Launchpad Interface Pinout................................................................................................ 9
8 BP-DAC11001EVM GUI Location........................................................................................ 10
9 GUI Connection Detection ................................................................................................ 10
10 Software Home Page...................................................................................................... 11
11 Setup Page.................................................................................................................. 12
12 DAC Quick-Start Page: Basic DAC Tab ................................................................................ 13
13 Register Map Page ........................................................................................................ 14
14 Register Page Options .................................................................................................... 14
15 Collateral Page ............................................................................................................. 15
16 Schematic Page 1.......................................................................................................... 16
17 Schematic Page 2.......................................................................................................... 17
18 Schematic Page 3.......................................................................................................... 18
19 Schematic Page 4.......................................................................................................... 19
20 PCB Components: Top Overlay.......................................................................................... 20
21 PCB Components: Bottom Overlay...................................................................................... 20
22 PCB Layout: Top Layer ................................................................................................... 21
23 PCB Layout: Ground Plane............................................................................................... 21
24 PCB Layout: Power Plane ................................................................................................ 22
25 PCB Layout: Bottom Layer................................................................................................ 22
List of Tables
1 Kit Contents .................................................................................................................. 3
2 Required Components Not Included With Kit............................................................................ 3
3 Related Documentation..................................................................................................... 3
4 BP-DAC11001EVM Power Supply Inputs................................................................................ 7
5 BP-DAC11001EVM Jumper Settings ..................................................................................... 7
6 BP-DAC11001EVM Bill of Materials .................................................................................... 23
Trademarks
BoosterPack is a trademark of Texas Instruments Inc.
Windows is a trademark of Microsoft Corporation.
All other trademarks are the property of their respective owners.

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BP-DAC11001EVM
1 Overview
The BP-DAC11001EVM is an easy-to-use platform to evaluate the functionality and performance of the
DAC11001 device. The DAC11001 is a highly accurate, low-noise, voltage-output, single-channel, digital-
to-analog converter (DAC). The DAC11001 is specified monotonic by design, and offers excellent linearity
of less than 4 LSB (max) across all ranges.
The unbuffered voltage output offers low-noise performance (7 nV/√Hz) in combination with fast settling
time (1 μs), making this device an excellent choice for low-noise, high-speed applications. The DAC11001
integrates an enhanced deglitch circuit with range- and code-independent symmetrical ultra-low glitch (1.5
nV-s) to enable clean waveform ramps with ultra-low harmonic distortion (THD).
The DAC11001 device incorporates a power-on-reset (POR) circuit so that the DAC powers on with
known values in the registers. With external references, DAC output ranges from VREFPF to VREFNF can be
achieved, including asymmetric output ranges.
The DAC11001 uses a versatile 4–wire serial interface that operates at clock rates of up to 50 MHz. The
DAC11001 is specified over the industrial temperature range of –40°C to +125°C.
The EVM provides the GPIO and SPI programming interface using a PC-based graphical user interface
(GUI). This EVM requires the MSP-EXP432E401Y Launchpad for interfacing with the PC-based GUI.
1.1 Kit Contents
Table 1 details the contents of the EVM kit. Contact the TI Product Information Center nearest you if any
component is missing. TI highly recommends that the user verify latest versions of the related software at
the TI website, www.ti.com.
Table 1. Kit Contents
Item Quantity
BP-DAC11001EVM BoosterPack 1
Table 2. Required Components Not Included With Kit
Item Quantity
MSP-EXP432E401Y Launchpad 1
The MSP-EXP432E401Y Launchpad can be purchased from the MSP432E401Y tool folder on
www.ti.com.
1.2 Related Documentation from Texas Instruments
The following document provides information regarding Texas Instruments integrated circuits used in the
assembly of the BP-DAC11001EVM. This user's guide is available from the TI web site under literature
number SLAU806. Any letter appended to the literature number corresponds to the document revision that
is current at the time of the writing of this document. Newer revisions may be available from the TI web
site at http://www.ti.com/, or call the Texas Instruments Literature Response Center at [phone] or
the Product Information Center at [phone]. When ordering, identify the document by both title and
literature number.
Table 3. Related Documentation
Document Literature Number
DAC11001 product data sheet SLASEL0

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2 System Setup
2.1 Software Setup
This section provides the procedure for EVM software installation.
2.1.1 Software Installation
The EVM software is compatible with the Windows™ 7, 8, and 10 operating systems. The software is
available on the product folder, and can also be found in the GUI Composer Gallery. Search for BP-
DAC11001EVM in the GUI Composer Gallery. Use the down arrow symbol to download the software.
There are two downloads: BP-DAC11001EVM GUI and GUI Composer Runtime. Either download both, or
just download the EVM GUI; the runtime file can be downloaded through the EVM GUI during installation.
The software can also be run online; however, only after the firmware and driver are upgraded. After the
software is downloaded onto the PC, navigate to the download folder, and run the BP-DAC11001EVM
software executable, as shown in Figure 1.
Figure 1. BP-DAC11001EVM Software Setup
When the BP-DAC11001EVM software is launched, an installation dialog window opens and prompts the
user to select an installation directory. If left unchanged, the software location defaults to C:\Program Files
(x86)\Texas Instruments\BP-DAC11001 EVM, as shown in Figure 2. If there is no previous installation of
the GUI Composer Runtime application, the installer also requests for an automatic download from the
web. Select either Install from Web to download and install from the web, or Install from PC and provide
the path to the local file that is already downloaded. The runtime executable also installs the USB drivers,
unless the drivers are already installed.
The software installation automatically copies the required files and drivers to the local machine.
Figure 2. Software Installation Path

3 42
Remove
Jumper
Mount
Jumper
1
xxx
xxx
xxx
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2.1.2 Launchpad Firmware Upgrade
Before using the software for the first time, upgrade the firmware for the launchpad. The firmware is
programmed to the launchpad using the online tool, UniFlash. This link is also provided on the Setup page
of the GUI. After unzipping the install_image_BP-DAC11001EVM.zip file, the firmware bin file is found at
<Download Directory>\BP-DAC11001EVM_1.0.1_installer_win\install_image_BP-DAC11001EVM\BP-
DAC11001EVM\firmware\acctrl.bin.
Follow the step-by-step procedure below to upgrade the firmware and install the device drivers
successfully:
1. Remove jumper JP6 on the launchpad, as shown in step 1 of Figure 3.
Figure 3. Launchpad Setup
2. Mount the jumper on 5V-OTG. Retain the jumper on 5V-XDS, as shown in step 1 of Figure 3.
3. Connect the USB cable to the port on the XDS110 side of the board, as shown in step 2 of Figure 3.
4. Connect the USB cable to PC and open UniFlash. Click on Start Now in the Detect Device section.
5. If the GUI Composer framework is being installed for the first time on the PC, the browser extension
and the TI Cloud Agent must also be installed. Follow the 2-step installation flow prompted on the web
page, as shown in Figure 4
Figure 4. TI Cloud Agent Installation
6. Press the Refresh or Finish button after the installation is complete. This action should detect the
launchpad.
7. Press Start and browse for <Download Directory>\BP-
DAC11001EVM_1.0.1_installer_win\install_image_BP-DAC11001EVM.\BP-
DAC11001EVM\firmware\acctrl.bin. Press Load Image followed by Verify Image.

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2.2 Hardware Setup
This section provides the overall system setup for the EVM. The hardware setup contains the MSP-
EXP432E401Y launchpad and the BP-DAC11001EVM. A PC runs the software that provides an interface
to the BP-DAC11001EVM through the launchpad.
The BP-DAC11001EVM requires external power supplies, as described later in this document. The 3.3-V
and 5-V power supplies from the launchpad can be used for IOVDD and DVDD for the DAC, respectively,
using jumper options. The launchpad generates the digital signals used to communicate with the EVM
board.
Figure 5 displays the hardware setup.
Figure 5. Hardware Setup

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2.2.1 Power Configurations and Jumper Settings
The BP-DAC11001EVM provides electrical connections to the device supply pins. The connectors and
optional configurations are shown in Table 4, and Table 5 shows the EVM jumper settings.
Table 4. BP-DAC11001EVM Power Supply Inputs
BP-DAC11001EVM Connector Supply Name Voltage Range Test Point
J12 VCC 5 V to 15 V TP21
J13 VSS –5 V to –15 V TP24
J14 VDD 4.5 V to 5.5 V TP25
J15 VIO 2.7 V to 5.5 V (Option: 3V3 on the launchpad) TP26
J17 GND 0 V TP27
J18 REF_PWR 5.3 V to 5.5 V TP33
J19 REFGND 0 V TP34
Table 5. BP-DAC11001EVM Jumper Settings
Jumper Description Default Position Alternative Position
J1 2x gain configuration None 1-2 or 2-3
J2 Output amplifier feedback configuration 1-2, 3-4: external resistor and
capacitor connection 5-6, 7-8: embedded resistor connection
J4 LDAC pull-down None 1-2: LDAC tied low
J5 CLR pull-down None 1-2: CLR tied low
J7 DAC output to load circuit connection None 1-2: DAC output to auxiliary circuit; 2-3: DAC
output to filter input
J8 AGND-OUT to FILTGND connection None 1-2: AGND-OUT and FILTGND shorted
J11 DVDD connection 2-3: DVDD from AEVM_5V0 1-2: DVDD from VDD
J16 IOVDD connection 2-3: IOVDD from AEVM_3V3 1-2: IOVDD from VIO
J20 REF_PWR connection 2-3: REF_PWR from J18 1-2: REF_PWR from VCC. Make sure VCC
is < 6 V before using this option.
J25 Reference filter bypass None 1-2: Bypass reference filter
J26 Reference source selection 2-3: Onboard reference 1-2: External reference (3 V to 10 V)
J30 REFGND connection 2-3: Through ground buffer 1-2: Do not use on the Rev A PCB
J31 Negative reference selection 2-3: Inverted reference source 1-2: Tied to ground (unipolar output mode)
2.2.2 Connecting the Hardware
After the launchpad firmware is upgraded as described in Section 2.1.2, and power and jumper
configurations done as per Section 2.2.1, the BP-DAC11001EVM and the launchpad can be connected as
shown in Figure 5. Connect the USB cable from the lauchpad OTG USB port (U7) to the PC.
2.2.3 Electrostatic Discharge Caution
Many of the components on the BP-DAC11001EVM and the launchpad are susceptible to damage by
electrostatic discharge (ESD). Observe proper ESD handling precautions when unpacking and handling
the EVM, including the use of a grounded wrist strap at an approved ESD workstation.

DAC11001
RC
FILTER
REF6250
EXTERNAL
REFERENCE
REFP
REFN
REF_PWR
REFGND
AGND
REF_VCC REF_VSS
AGND
DGND
OUT_VCC OUT_VSS
AGND-OUT
BUFFERED
DAC
OUTPUT
SW
FILTGND
FILT_VCC FILT_VSS
FILTER 1
FILTER 2
AUXGND
VCC VSS VDD VIO
DGNDAGND
INTERFACE FOR
AUXILIARY
CIRCUIT
VREFP VREFN
VCCVSS
VDD
VIOREF_PWR
REFGND AGND
VCC VSS DVDD IOVDD
AVDD
EXTERNAL
LDAC
SPI
DGND
LAUNCHPAD
INTERFACE
AEVM_3V3
AEVM_5V0
VDD
IOVDD
VDD
DVDD
VDD DVDD
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3 Detailed Description
3.1 Hardware Description
The following subsections provide detailed information on the EVM hardware and jumper configuration
settings.
3.1.1 Theory of Operation
The block diagram of the BP-DAC11001EVM board is displayed in Figure 6. The dotted lines indicate
different power and ground domains. All grounds are shorted together using single-point shorts. The EVM
board connects to the launchpad with the BoosterPack connectors. There is an onboard reference, using
the REF6250, that generates a 5-V voltage reference, that in turn is converted to 5-V and –5-V reference
inputs for the DAC. There is an option for an external reference using connectors J27 and J28. Both J27
and J28 form a force-sense pair that eliminate cable losses while connected to external reference
sources. The DAC output is provided on J3. Jumper J2 provides various feedback options for the output
amplifier. The DAC output can be taken through two-stage, second-order filters using connectors J7 and
J8. There is an option to interface an external circuit using auxiliary connectors J23 and J24.
Figure 6. BP-DAC11001EVM Hardware Block Diagram

1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
3v3
LD AC
SCL K
GND
21
22
23
24
25
26
27
28
29
30
40
39
38
37
36
35
34
33
32
31
5v
GND
CLR
Pin aligns with BoosterPack pinout standard
SYNC
SDO
SDIN
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3.1.2 Signal Definition for the Launchpad Interface
The BP-DAC11001EVM interfaces with the launchpad through connectors J9 and J10. The pin definitions
are shown in Figure 7.
Figure 7. Launchpad Interface Pinout

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3.2 Software Description
This section describes the features of the BP-DAC11001EVM software, and discusses how to use these
features. The software provides basic control of all the registers and functions of the DAC11001 device.
3.2.1 Starting the Software
To launch the software, locate the Texas Instruments folder in the All Programs menu, and select the BP-
DAC11001EVM icon, as shown in Figure 8.
Figure 8. BP-DAC11001EVM GUI Location
Figure 9 shows that if the launchpad connector is connected correctly, the status bar at the bottom of the
screen displays Hardware Connected. If the launchpad is not properly connected or not connected at all,
the status bar displays Hardware not connected. In case the Hardware not connected status persists even
after the hardware is connected, go to Options →Serial Port, and change the port to the other available
port with the (Texas Instruments) or ACCtrl tag. One of the two ports with these tags will connect to the
hardware.
Figure 9. GUI Connection Detection

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3.2.2 Software Features
The BP-DAC11001EVM incorporates interactive functions that help configure the DAC11001 device.
These functions are built into several GUI pages, as shown in the following sections. The Menu button
allows the user to switch between the pages, with each page representing a feature of the software.
3.2.2.1 Home Page
The Home page, shown in Figure 10, provides the basic information and navigation to other pages. Click
on Learn More... to get more information on the device.
Figure 10. Software Home Page

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3.2.2.2 Setup Page
The Setup page, shown in Figure 11, guides the user to perform a one-time firmware upgrade for the
launchpad.
Figure 11. Setup Page

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3.2.2.3 DAC Quick-Start Page
The DAC Quick-Start page provides the functions to quickly get started with the EVM. The basic
initialization settings are meant for basic dc operation; whereas, the advanced settings are meant for ac
functionality, such as settling time and total harmonic distortion (THD). Write a decimal code to the DAC
output input box to get the corresponding analog output.
Figure 12. DAC Quick-Start Page: Basic DAC Tab

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3.2.2.4 Register Map Page
The Register Map page, shown in Figure 13, allows the user to access low-level communication directly
with the DAC11001 registers. Selecting a register on the Register Map list shows a description of the
values in that register, as well as information on the register address, default value, size, and current
value. Values are read from and written to the registers by writing to the Value or bit field of the GUI.
Figure 13. Register Map Page
There are some configuration lists and action buttons provided on the Register Map page. To store the
values of the register map locally, press the Save Registers button under the File menu option.
Additionally, recall and load the stored configuration files through the Load Registers button. Other options
selectable by the user are the Auto Read Interval,Read Register,Read All Registers,Write Register,
Write All Registers, and Update Mode buttons. These buttons are displayed in Figure 14. The Write
Register and Write All Registers buttons are enabled only with Deferred update mode. Deferred mode
initiates a write operation only when the Write Register or the Write All Registers button is pressed. By
default, the Immediate update mode is selected for the Register Map page write operations.
Figure 14. Register Page Options

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3.2.2.5 Collateral Page
This page shown in Figure 15 provides links for all the collateral on the DAC11001 device.
Figure 15. Collateral Page

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4 Schematic, PCB Layout, and Bill of Materials
This section contains the complete bill of materials and schematic diagram for the BP-DAC11001EVM.
4.1 BP-DAC11001EVM Schematic
Figure 16. Schematic Page 1

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Figure 17. Schematic Page 2

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Figure 18. Schematic Page 3

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Figure 19. Schematic Page 4

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4.2 PCB Layout
Figure 20 through Figure 25 show the layout details of the BP-DAC11001EVM board.
Figure 20. PCB Components: Top Overlay
Figure 21. PCB Components: Bottom Overlay