Texas Instruments DAC53401EVM User manual

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DAC53401EVM
User's Guide
SLAU805–July 2019
DAC53401EVM
This user’s guide describes the characteristics, operation, and use of the DAC53401EVM evaluation
module (EVM). This EVM is designed to evaluate the performance of the DAC53401 buffered voltage
output DAC in a variety of configurations. Throughout this document, the terms evaluation board,
evaluation module, and EVM are synonymous with the DAC53401EVM. This document includes a
schematic, reference printed-circuit board (PCB) layouts, and a complete bill of materials.
Contents
1 Overview ..................................................................................................................... 3
2 System Setup ................................................................................................................ 4
3 Detailed Description......................................................................................................... 8
4 Schematic, PCB Layout, and Bill of Materials.......................................................................... 22

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DAC53401EVM
List of Figures
1 DAC53401EVM Software Setup........................................................................................... 4
2 Software Installation Path .................................................................................................. 4
3 TI Cloud Agent Installation ................................................................................................. 5
4 Analog EVM Controller Setup.............................................................................................. 5
5 Hardware Setup.............................................................................................................. 6
6 Hardware Setup Guidelines ................................................................................................ 7
7 BOOSTXL-DAC-PORT Hardware Block Diagram....................................................................... 8
8 DAC53401EVM Hardware Block Diagram.............................................................................. 11
9 DAC53401EVM GUI Location............................................................................................ 13
10 DAC53401EVM GUI Connection Detection ............................................................................ 13
11 Software Home Page...................................................................................................... 14
12 Setup Page.................................................................................................................. 15
13 DAC Quick-Start Page: Basic DAC Tab ................................................................................ 16
14 DAC Quick-Start Page: Margining Tab.................................................................................. 17
15 DAC Quick Start Page: Function Generation........................................................................... 18
16 DAC Quick-Start Page: Alarms Tab ..................................................................................... 19
17 Register Map Page ........................................................................................................ 20
18 Register Page Options .................................................................................................... 20
19 Collateral Page ............................................................................................................. 21
20 BOOSTXL-DAC-PORT Schematic Page 1 ............................................................................. 22
21 BOOSTXL-DAC-PORT Schematic Page 2 ............................................................................. 23
22 DAC53401EVM Schematic ............................................................................................... 24
23 BOOSTXL-DAC-PORT PCB Components Layout..................................................................... 25
24 BOOSTXL-DAC-PORT Top Layer....................................................................................... 25
25 BOOSTXL-DAC-PORT Bottom Layer................................................................................... 26
26 DAC53401EVM PCB Components Layout ............................................................................. 26
27 DAC53401EVM Layers.................................................................................................... 27
List of Tables
1 Contents of DAC53401EVM Kit............................................................................................ 3
2 Required Components Not Included With Kit............................................................................ 3
3 Related Documentation..................................................................................................... 3
4 DAC53401EVM Power Supply Inputs .................................................................................... 6
5 BOOSTXL-DAC-PORT Jumper Settings ................................................................................. 6
6 BOOSTXL-DAC-PORT J13 Pin Definitions .............................................................................. 9
7 BOOSTXL-DAC-PORT J14 Pin Definitions .............................................................................. 9
8 BOOSTXL-DAC-PORT J4 Pin Definitions .............................................................................. 10
9 BOOSTXL-DAC-PORT J5 Pin Definitions .............................................................................. 10
10 BOOSTXL-DAC-PORT J12 Pin Definitions............................................................................. 10
11 DAC53401EVM J2 Pin Definitions....................................................................................... 12
12 DAC53401EVM J1 Pin Definitions....................................................................................... 12
13 BOOSTXL-DAC-PORT Bill of Materials................................................................................. 28
14 DAC53401EVM Bill of Materials.......................................................................................... 30
Trademarks
Windows is a trademark of Microsoft Corporation.
PMBus is a trademark of SMIF, Inc.
All other trademarks are the property of their respective owners.

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DAC53401EVM
1 Overview
The DAC53401EVM is an easy-to-use platform to evaluate the functionality and performance of the
DAC53401 device. The 10-bit DAC53401 and 8-bit DAC43401 (DACx3401) are a pin-compatible family of
buffered voltage-output digital-to-analog converters (DACs). These devices have nonvolatile memory
(NVM), an internal reference, and a PMBus™ compatible I2C interface. The DACx3401 operates with
either an internal reference or the power supply as a reference, and provides full-scale output of 1.8 V to
5.5 V. The devices communicate through the I2C interface. These devices support I2C standard mode (100
kbps), fast mode (400 kbps), and fast mode plus (1 Mbps). The DACx3401 are feature rich, and include
features such as PMBus voltage margin commands (for example, Turn On/Off, Margin High/Low, and
more), digital slew rate control, user-programmable power up to high impedance, a standalone waveform
generator (square, ramp, and sawtooth), a medical alarm tone generator (low, medium, and high priority),
and a dedicated feedback pin. The EVM provides the GPIO and I2C programming interface using a PC-
based graphical user interface (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. Contents of DAC53401EVM Kit
Item Quantity
DAC53401EVM evaluation board PCB 1
Table 2. Required Components Not Included With Kit
Item Quantity
BOOSTXL-DAC-PORT 1
MSP-EXP432E401Y Launchpad
(Analog EVM Controller) 1
The Analog EVM Controller 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 DAC53401EVM. This user's guide is available from the TI web site under literature
number SLAU805. 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
DAC53401 product data sheet SLASES7

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2 System Setup
2.1 Software Setup
This section provides the procedure for EVM software installation.
2.1.1 Operating Systems
The EVM software is compatible with the Windows™ 7, 8, and 10 operating systems.
2.1.2 Software Installation
The software is available on the product folder, and can also be found in the GUI Composer Gallery.
Search for DAC53401EVM inn the GUI Composer Gallery. Use the down arrow symbol to download the
software. There are two downloads: DAC53401EVM GUI and GUI Composer Runtime. Either download
both, or just download the EVM GUI; the runtime can be downloaded through the EVM GUI during
installation. The software can also be run online by clicking; 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
DAC53401EVM software executable, as shown in Figure 1. When the DAC53401EVM 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\DAC53401
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 also installs the USB drivers, unless the drivers are already installed.
Figure 1. DAC53401EVM Software Setup
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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DAC53401EVM
2.1.3 Analog EVM Controller Firmware Upgrade
The firmware for the Analog EVM Controller must be upgraded for the first time before using the software.
A jumper must be modified, and the USB cable must be connected to the XDS110 port of the Analog EVM
Controller to download firmware. The firmware can be programmed to the Analog EVM Controller using
the online tool UniFlash. This link is also provided on the Setup page of the GUI. The firmware bin file can
be found at <Download
Directory>\DAC53401EVM_1.0.1_installer_win\install_image_DAC53401EVM\DAC53401EVM\firmware\ac
ctrl.0.3.0.3b.bin after unzipping the file install_image_DAC53401EVM.zip.
Follow the step-by-step procedure below to upgrade the firmware and install the device drivers
successfully:
1. Remove jumper JP6 on the Analog EVM Controller as shown in step 1 of Figure 4.
2. Mount jumper on 5V-OTG. Retain the jumper on 5V-XDS as shown in step 1 of Figure 4.
3. Connect the USB cable to the port on the XDS110 side of the board as shown in step 2 of Figure 4.
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 be installed. Follow the 2-step installation flow prompted on the web
page, as shown in Figure 3
Figure 3. 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>\DAC53401EVM_1.0.1_installer_win\install_image_DAC53401EVM.\DAC53401EVM\firmwar
e\acctrl.0.3.0.3b.bin. Press Load Image followed by Verify Image.
Figure 4. Analog EVM Controller Setup

XDS110
USB Port
Analog EVM
Controller
(MSP432E401Y)
BOOSTXL-DAC-PORT
Optional Function
Extender Card
OTG USB
Port (U7)
xx
xx
xx
xx
xx
xx
xxx
xxx
xxx
xxx
xxx
xxx
xxx
xxx
DAC EVM
Optional
Jumpers/Test
Points
Jumpers/Test Points
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DAC53401EVM
2.2 Hardware Setup
This section provides the overall system setup for the EVM. The hardware setup contains the Analog EVM
Controller (MSP-EXP432E401Y Launchpad), BOOSTXL-DAC-PORT, and DAC53401EVM. A PC runs
software that provides an interface to the DAC53401EVM through the Analog EVM Controller.
The Analog EVM Controller generates 5 V of power that can be used as VDD for the DAC. Analog EVM
Controller also generates 3.3 V of power that can be used for I2C pull-ups. The IO ports of the Analog
EVM Controller and level translators used on the BOOSTXL-DAC-PORT and DAC53401EVM can
withstand a maximum of 3.6-V IO levels. The Analog EVM Controller also generates digital signals used to
communicate with the EVM board.
The BOOSTXL-DAC-PORT is a generic platform used for catalog DACs that provides a predefined
interface to connect a DAC evaluation module. The BOOSTXL-DAC-PORT also provides various options
for power supply, reference, and digital signals. A connector is provided on the BOOSTXL-DAC-PORT for
external power supplies. This platform is designed to host additional boards stacked up on the BOOSTXL-
DAC-PORT in order to provide extended functions. Figure 5 displays the system setup.
Figure 5. Hardware Setup
2.2.1 Power Configurations and Jumper Settings
The DAC53401EVM provides electrical connections to the device supply pins. The connectors and
optional configurations are shown in Table 4. The jumper settings on the BOOSTXL-DAC-PORT are
crucial to the proper functioning of the DAC53401EVM. Table 5 provides the details of the possible jumper
settings on the BOOSTXL-DAC-PORT.
Table 4. DAC53401EVM Power Supply Inputs
DAC53401EVM
Connector Supply Name Voltage Range
J2.1 VDD 1.8 V to 5.5 V (5 V Available on Analog EVM Controller), Jumper J9.1-2 on BOOSTXL-DAC-PORT
J1.8 VIO 1.8 V to 3.6 V (3.3 V Available on Analog EVM Controller), Jumper J10.1-2 on BOOSTXL-DAC-PORT
J1.7 DAC_VIO 1.8 V to 3.6 V, Jumper J11.1-2 on BOOSTXL-DAC-PORT
J1.1 GND 0 V
Table 5. BOOSTXL-DAC-PORT Jumper Settings
Jumper Default Position Available Option Description
J3 1-2: Onboard reference 2-3: External reference External or onboard reference selection
J6 2-3: Zener reference 1-2: VDD reference Zener or VDD reference
J7 2-3: 2.5-V reference 1-2: 5-V reference 2.5-V or 5-V reference selection
J8 2-3: Unused on DAC53401 1-2: Unused on DAC53401 External or onboard LDAC selection
J9 1-2: 5 V from Launchpad 2-3: External VDD 5-V or external VDD
J10 1-2: 3.3 V from Launchpad 2-3: External VIO 3.3-V or external VIO
J11 Closed: DAC_VIO is connected to VIO Open: DAC_VIO off DAC_VIO on/off

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2.2.2 Connecting the Hardware
After the Analog EVM Controller firmware is upgraded as described in Section 2.1.3, and power and
jumper configurations done as per Section 2.2.1, the BOOSTXL-DAC-PORT and DAC53401EVM can be
connected as shown in Figure 6. Connect the USB cable from the Analog EVM Controller OTG USB Port
(U7) to the PC.
Figure 6. Hardware Setup Guidelines
2.2.3 Electrostatic Discharge Warning
Many of the components on the DAC53401EVM 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.

External
Power
I2C
SPI/GPIO SPI/GPIO
5 V / 3.3 V
Analog IO
Power
External Refererence
DAC EVM Interface
Reference Jumper Settings Power-Supply Jumper Settings
Digital Level
Translator
I2C Level
Translator
Analog and Power Supply Function Extender
Launchpad Interface Launchpad Interface
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DAC53401EVM
3 Detailed Description
3.1 Hardware Description
The following sections provide detailed information on the EVM hardware and jumper configuration
settings.
3.1.1 Theory of Operation for the BOOSTXL-DAC-PORT
The BOOSTXL-DAC-PORT is a generic evaluation platform for catalog DACs that provides various
options for power supply, reference, communication interfaces, and GPIO for a DAC EVM. The DAC EVM
interfaces with a predefined set of signals common to a precision DAC. The block diagram of this board is
shown in Figure 7.
Figure 7. BOOSTXL-DAC-PORT Hardware Block Diagram
3.1.2 Signal Definition of the BOOSTXL-DAC-PORT
The BOOSTXL-DAC-PORT provides hardware connectors for the Analog EVM Controller (J13, J14),
external power (J12), the DAC53401EVM (J1, J2), and the external function extender (J4, J5). The
descriptions are provided in Table 6 through Table 10.

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Table 6. BOOSTXL-DAC-PORT J13 Pin Definitions
Pin# Signal Description
11 GPIO General-purpose I/O
12 CS SPI CS or general-purpose I/O
13 GPIO SPI
14 MISO SPI MISO
15 MOSI SPI MOSI
16 RST MCU reset output
17 GPIO General-purpose I/O
18 GPIO General-purpose I/O
19 GPIO General-purpose I/O
20 GND Ground
31 GPIO General-purpose I/O
32 GPIO General-purpose I/O
33 GPIO General-purpose I/O
34 GPIO General-purpose I/O
35 EXT_LDAC External LDAC I/O
36 EXT_LDAC External LDAC I/O
37 SPI_BUF_EN Digital, SPI buffer enable
38 GPIO General-purpose I/O
39 GPIO General-purpose I/O
40 GPIO General-purpose I/O
Table 7. BOOSTXL-DAC-PORT J14 Pin Definitions
Pin# Signal Description
1 +3.3V 3.3-V power supply
2 GPIO General-purpose I/O
3 GPIO General-purpose I/O
4 GPIO General-purpose I/O
5 GPIO General-purpose I/O
6 GPIO General-purpose I/O
7 SCLK_A0 SPI SCLK or I2C A0
8 GPIO General-purpose I/O
9 SCL I2C SCL
10 SDA I2C SDA
21 +5V 5-V power supply
22 GND Ground
23 GPIO General-purpose I/O
24 GPIO General-purpose I/O
25 VDD_SENSE Sense Input for VDD
26 VIO_SENSE Sense Input for VIO
27 GPIO General-purpose I/O
28 GPIO General-purpose I/O
29 GPIO General-purpose I/O
30 GPIO General-purpose I/O

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Table 8. BOOSTXL-DAC-PORT J4 Pin Definitions
Pin# Signal Description
1 AIO0 Analog I/O
2 AGND Analog ground
3 AIO2 Analog I/O
4 AIO4 Analog I/O
5 AGND Analog ground
6 AIO6 Analog I/O
7 AIO8 Analog I/O
8 AGND Analog ground
9 AIO10 Analog I/O
10 AIO12 Analog I/O
11 AGND Analog ground
12 AIO14 Analog I/O
13 EXT_REF External reference input
14 GND Ground
15 VCC VCC output
16 VDD VDD output
Table 9. BOOSTXL-DAC-PORT J5 Pin Definitions
Pin# Signal Description
1 AIO1 Analog I/O
2 AGND Analog Ground
3 AIO3 Analog I/O
4 AIO5 Analog I/O
5 AGND Analog Ground
6 AIO7 Analog I/O
7 AIO9 Analog I/O
8 AGND Analog Ground
9 AIO11 Analog I/O
10 AIO13 Analog I/O
11 AGND Analog Ground
12 AIO15 Analog I/O
13 REFGND External Reference Ground
14 GND Ground
15 VSS VSS Output
16 VIO or DAC_VIO VIO or DAC_VIO Output
Table 10. BOOSTXL-DAC-PORT J12 Pin Definitions
Pin# Signal Description
1 VCC High-voltage positive power supply
2VSS High-voltage negative power
supply
3 GND Ground
4 EXT_VDD External VDD
5 EXT_VIO External VIO

DAC53401
VDD
A0
NC
SCL
REF
NC
NC
NC
NC
NC
NC
NC
AGND
GND
NC
NC
SDA
VOUT
VFB
VIO
DAC_VIO
NC
NC
NC
LDO_CAP
AGND
AGND
AGND
AGND
AGND
AGND
AGND
BUFFER
EEPROM
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3.1.3 Theory of Operation for the DAC53401EVM Hardware
The block diagram of the DAC53401EVM board is displayed in Figure 8. The EVM board connects to
BOOSTXL-DAC-PORT with two 16-pin connectors. These headers provide access to all DAC pins. The
EVM board also houses an EEPROM and an I2C buffer.
Figure 8. DAC53401EVM Hardware Block Diagram

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3.1.4 Signal Definition of the DAC53401EVM
The DAC53401EVM provides access to all DAC pins through connection J1 and J2, as listed in Table 11
and Table 12.
Table 11. DAC53401EVM J2 Pin Definitions
Pin# Signal Description
1 VDD VDD power supply
2 A0 I2C address select
3 NC Not connected
4 SCL I2C SCL
5 REF Reference input
6 NC Not connected
7 NC Not connected
8 NC Not connected
9 NC Not connected
10 NC Not connected
11 NC Not connected
12 NC Not connected
13 AGND Analog ground
14 AGND Analog ground
15 AGND Analog ground
16 AGND Analog ground
Table 12. DAC53401EVM J1 Pin Definitions
Pin# Signal Description
1 GND PCB ground
2 NC Not connected
3 NC Not connected
4 SDA I2C SDA
5 VOUT DAC output
6 VFB DAC feedback pin
7 DAC_VIO Pull-up for DAC I2C signals
8 VIO Power supply for EEPROM
9 NC Not connected
10 NC Not connected
11 NC Not connected
12 LDO_CAP LDO bypass capacitor
13 AGND Analog ground
14 AGND Analog ground
15 AGND Analog ground
16 AGND Analog ground

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DAC53401EVM
3.2 Software Description
This section describes the features of the DAC53401 EVM software, and discusses how to use these
features. The software provides basic control of all the registers and functions to the DAC53401 device.
3.2.1 Starting the Software
To launch the software, locate the Texas Instruments folder in the All Programs menu, and select the
DAC53401 EVM icon.
Figure 9. DAC53401EVM GUI Location
Figure 10 shows that if the Analog EVM Connector is connected correctly, the status bar at the bottom of
the screen displays Hardware Connected. If the Analog EVM Controller 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. Out of the two ports with these tags,
one port should connect.
Figure 10. DAC53401EVM GUI Connection Detection

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3.2.2 Software Features
The DAC53401 EVM incorporates interactive functions that help configure the DAC53401 device. These
functions are built into several GUI pages, as shown in the following sections. The Menu allows the user
to switch between the pages, with each page representing a feature of the software.
3.2.2.1 Home Page
This page, shown in Figure 11, provides the basic information and navigation to other pages. Click on
Learn More... to get more information on the device.
Figure 11. Software Home Page

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DAC53401EVM
3.2.2.2 Setup Page
This page, shown in Figure 12, guides the user to perform a one-time firmware upgrade for the Analog
EVM Controller, and details how the Analog EVM Controller, BOOSTXL-DAC-PORT, and DAC53401EVM
are stacked. This page also shows the default jumper settings for the BOOSTXL-DAC-PORT.
Figure 12. Setup Page

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3.2.2.3 DAC Quick-Start Page
This page is divided in to four tabs: basic DAC, margining, functions, and alarms. The following
subsections describe each tab.
3.2.2.3.1 Basic DAC Tab
The Basic DAC setup tab is shown in Figure 15 provides an interface to quickly power up, select the
reference and output span, and program the output voltage (decimal) for the DAC53401. The DAC53401
comes in Hi-Z power-down mode by default.
NOTE: The basic DAC setup for power up, reference selection, and output span selection available
in this tab is common to all the tab functions.
The EEPROM PROGRAM button is used to write the latest register settings to the EEPROM. The
RELOAD button is used to retrieve the settings stored in the EEPROM. The A0 pin programming has not
been provided in this version of the software, although the hardware has options for all four possible
configurations.
Figure 13. DAC Quick-Start Page: Basic DAC Tab

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3.2.2.3.2 Margining Tab
The second tab on the quick-start page is Margining, as shown in Figure 14. This page provides the
settings for margin-low, margin-high, and nominal DAC outputs along with code-step and slew-rate for the
ramp generation. The margin-low and the margin-high triggers are by the respective buttons. The register
settings are programmed or retrieved using the EEPROM PROGRAM or RELOAD buttons, respectively.
The trigger bits are not loaded to the EEPROM because they are edge sensitive.
Figure 14. DAC Quick-Start Page: Margining Tab

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3.2.2.3.3 Functions Tab
The next tab on the quick-start page is Functions, for function generation as shown in Figure 15. This
page provides the ramp programming done through code-step and slew-rate settings. The most basic
setting for this functionality is the function selection: triangular wave, saw-tooth wave, reverse saw-tooth
wave, and square wave. The margin-low and margin-high settings define the lower and the upper bounds
of the waveform, respectively. The toggle button starts or stops the defined function generation. Any
change to the function settings can only be done when the function is off. The register settings can be
programmed or retrieved using the EEPROM PROGRAM or RELOAD buttons, respectively.
Figure 15. DAC Quick Start Page: Function Generation

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3.2.2.3.4 Alarms Tab
The Alarm tab on the quick-start page is a special medical alarm function provided by DACx3401. The
settings for this function are as shown in Figure 16. The ramp generation settings are similar to that of
function generation: code-step, slew-rate, margin-low, and margin-high. In addition to these settings, the
medical alarms have three more settings: interburst time, pulse-off time, and pulse-on time. These settings
have four common settings that take different values depending on the type of alarm selected. Refer to the
DAC53401 data sheet for these timing details. There are three types of alarms: low-priority, medium-
priority, and high-priority. The radio buttons are used to trigger any one of the alarms. The register settings
are programmed or retrieved using the EEPROM PROGRAM or RELOAD buttons, respectively.
Figure 16. DAC Quick-Start Page: Alarms Tab

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3.2.2.4 Register Map Page
The DAC53401 EVM Register Map page, shown in Figure 17, allows the user to access low level
communication directly with the DAC53401 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 17. Register Map Page
There are some configuration lists and action buttons provided on the Register Map page. The values of
the register map can be stored locally by pressing the Save Registers button under the File menu option.
Additionally, the stored configuration files can be recalled and loaded 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. All buttons are displayed in Figure 18. 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 18. Register Page Options