Texas Instruments DACx0504 series User manual

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DACx0504 Evaluation Module
User's Guide
SLAU735A–July 2017–Revised October 2017
DACx0504 Evaluation Module
This user's guide describes the characteristics, operation, and use of the DACx0504 evaluation boards
(EVMs). This user’s guide also discusses the proper setup and configuration of both software and
hardware, and reviews various aspects of program operation. A complete circuit description, schematic
diagram, and bill of materials (BOM) are also included in this document.
Contents
1 Overview...................................................................................................................... 3
1.1 DACx0504EVM Kit Contents...................................................................................... 3
1.2 Related Documentation From Texas Instruments.............................................................. 3
2 DACx0504EVM Hardware Setup.......................................................................................... 4
2.1 Theory of Operation for DACx0504 Hardware.................................................................. 4
2.2 Signal Definition of USB2ANY .................................................................................... 5
3 DACx0504EVM Software Setup........................................................................................... 6
3.1 Operating Systems for DACx0504EVM Software .............................................................. 6
3.2 DACx0504EVM Software Installation ............................................................................ 6
4 DACx0504EVM Hardware Overview...................................................................................... 7
4.1 Electrostatic Discharge Warning.................................................................................. 7
4.2 Connecting the Hardware.......................................................................................... 7
4.3 DACx0504EVM Power Configurations........................................................................... 7
4.4 DAC Signal Pins .................................................................................................... 8
4.5 SPI Communication Signals and Digital Inputs................................................................. 8

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5 DACx0504EVM Software Overview ...................................................................................... 9
5.1 Starting the DACx0504EVM Software ........................................................................... 9
5.2 DACx0504EVM Software Features .............................................................................. 9
6 DACx0504EVM Documentation.......................................................................................... 12
6.1 DACx0504EVM Board Schematic .............................................................................. 12
6.2 DACx0504EVM PCB Components Layout..................................................................... 13
6.3 DACx0504EVM Bill of Materials................................................................................. 15
List of Figures
1 DACx0504EVM Hardware Setup.......................................................................................... 4
2 DACx0504EVM Block Diagram............................................................................................ 4
3 Launching Software Setup ................................................................................................. 6
4 DACx0504EVM Install Path................................................................................................ 6
5 DAC Output Connection Headers ......................................................................................... 8
6 DACx0504EVM GUI Location.............................................................................................. 9
7 DACx0504EVM GUI—Power On.......................................................................................... 9
8 DACx0504EVM Software Page Selection................................................................................ 9
9 Low Level Configuration Page............................................................................................ 10
10 Low Level Configuration Page Available Options...................................................................... 10
11 High Level Configuration Page........................................................................................... 11
12 DACx0504EVM Board Schematic ....................................................................................... 12
13 DACx0504EVM PCB Components Layout ............................................................................. 13
14 Top Layer ................................................................................................................... 13
15 Top Solder .................................................................................................................. 14
16 Bottom Layer................................................................................................................ 14
List of Tables
1 DACx0504EVM Kit Contents............................................................................................... 3
2 Related Documentation..................................................................................................... 3
3 J1 USB2ANY Signal Definition............................................................................................. 5
4 J1 Digital Signal Test Points ............................................................................................... 5
5 Default Jumper Settings .................................................................................................... 7
6 DACx0504EVM Power Supply Configuration............................................................................ 7
7 DACx0504EVM DAC Signal Connections................................................................................ 8
8 SPI Signal Definition ........................................................................................................ 8
9 DACx0504EVM Bill of Materials.......................................................................................... 15
Trademarks
Microsoft, Windows are registered trademarks of Microsoft Corporation.
All other trademarks are the property of their respective owners.

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DACx0504 Evaluation Module
1 Overview
This EVM features the DACx0504 device, a 16-bit/14-bit/12-bit, four-channel, buffered voltage-output
digital-to-analog converter (DAC). This device includes a 2.5-V, 5 ppm/°C internal reference giving full
scale output voltage ranges of 1.25 V, 2.5 V, or 5 V. These devices are guaranteed monotonic and
provide exceptional linearity of ±1 LSB INL in very small package options: WCSP (16), QFN (16), or
TSSOP (16). The EVM features the 3-mm × 3-mm QFN package.
1.1 DACx0504EVM 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, TI.com.
Table 1. DACx0504EVM Kit Contents
Item Quantity
DACx0504EVM PCB evaluation board 1
USB2ANY 1
1.2 Related Documentation From Texas Instruments
The following document provides information regarding Texas Instruments integrated circuits used in the
assembly of the DACx0504EVM. This user's guide is available from the TI web site under literature
number SLAU735. 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 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 2. Related Documentation
Document Literature Number
DACx0504 product data sheet SLASE73

USB2ANY
Connection DACx0504
4-CH Output,
Gain,
RSTSEL,
REFDIV,
LDAC
5-V Reference
(Optional) External VDD/VIO Power
(Test Point)
Power
SPI
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Power Supply PC
DACx0504EVM USB2ANY
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2 DACx0504EVM Hardware Setup
This section provides the overall system setup for the EVM. A PC runs software that communicates with
the USB2ANY platform, which generates the optional VIO power and digital signals used to communicate
with the EVM board. Test point connections are included on the EVM board for external power supplies.
Figure 1 displays the system setup for the DACx0504EVM.
Figure 1. DACx0504EVM Hardware Setup
2.1 Theory of Operation for DACx0504 Hardware
A block diagram of the DACx0504EVM is displayed in Figure 2. The EVM board connects to the external
power supplies VDD and VIO through test points. The 16-pin header provides the four DAC outputs and
pullup or pulldown option for GAIN, RSTSEL, REFDIV, and LDAC inputs. The other two headers provide
options for external reference connection and VIO input from USB2ANY. The SPI signals can be provided
either via the USB2ANY header or test points. The USB2ANY controls the GAIN, RSTSEL, REFDIV and
LDAC pins by default.
Figure 2. DACx0504EVM Block Diagram

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DACx0504 Evaluation Module
2.2 Signal Definition of USB2ANY
The DACx0504EVM provides a hardware connector (J1) that connects to the USB2ANY interface board,
which can supply VIO power and is responsible for providing the SPI commands sent from the PC GUI
software. Optionally, the VIO supply can be provided through an external supply, and all digital
communication lines can be accessed through their respective digital test points. This information is
provided in Table 3.
Table 3. J1 USB2ANY Signal Definition
Pin on J1 Signal Description
1 GPIO7 General purpose I/O
2 CS, GPIO6 CS | General purpose I/O
3 RXD, MISO SPI MISO
4 TXD, MOSI SPI MOSI
5 3.3V 3.3-V supply
6 GND Ground
7 GPIO3 General purpose I/O
8 SCLK, GPIO2 SPI SCLK
9 GPIO1 General purpose I/O
10 GPIO0 General purpose I/O
Table 4. J1 Digital Signal Test Points
Testpoints SPI Signal
TP1 SCLK
TP2 CS
TP3 SDI
TP4 SDO

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3 DACx0504EVM Software Setup
This section provides the procedure for EVM software installation.
3.1 Operating Systems for DACx0504EVM Software
The EVM software has been tested on the Microsoft®Windows®XP and Windows 7 operating systems
with the United States and European regional settings. The software should also be compatible with other
Windows operating systems.
3.2 DACx0504EVM Software Installation
The software is available through the EVM product folder on the TI website. Once the software is
downloaded onto the PC, navigate to the DACx0504EVM folder, and run the Setup_DAC80504_EVM.exe
file, as shown in Figure 3. When the software is launched, an installation dialog will open, and prompt the
user to select an installation directory. If left unchanged, the software location defaults to C:\Program Files
(x86)\Texas Instruments\DAC80504 EVM as shown in Figure 4.
Figure 3. Launching Software Setup
The software installation will automatically copy the required LabVIEW files and drivers to the local
machine. (Note: Please verify that the USB2ANY is not connected before the software installation, as this
may affect file or driver installation.)
Figure 4. DACx0504EVM Install Path

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4 DACx0504EVM Hardware Overview
The subsequent sections provide detailed information on the EVM hardware, and jumper configuration
settings. Table 5 displays the default configurations of all jumper connections on the DACx0504EVM.
Connect the USB extender cable from the USB2ANY to the PC.
Table 5. Default Jumper Settings
Jumper Default Position Function
JP1 Shunt populated VIO supply from USB2ANY
controller
4.1 Electrostatic Discharge Warning
Many of the components on the DACx0504EVM 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.
4.2 Connecting the Hardware
To connect the USB2ANY to the EVM board, align and firmly connect the keyed ribbon connector to the
J1 connector. Verify the connection is snug, as loose connections may cause intermittent operation.
4.3 DACx0504EVM Power Configurations
The DACx0504EVM provides electrical connections to the device supply pins. The connectors and
optional configurations are shown in the Table 6.
Table 6. DACx0504EVM Power Supply Configuration
Connect
or Connection Type Description
TP6 Test Point External VDD connection (2.7 V to 5.5 V)
TP8 Test Point External VIO connection
●JP1 populated (USB2ANY to power VIO)
●JP1 unpopulated (VIO powered through TP8)
VIO can be supplied by the USB2ANY by default. If a different source is required, it is possible to separate
the USB2ANY supply and VIO by removing the jumper from J1. An external supply can then connect to J5
to power VIO.

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4.4 DAC Signal Pins
The DACx0504EVM provides access to all DAC outputs through connection J2 as shown in Figure 5, and
listed in Table 7.
Figure 5. DAC Output Connection Headers
Table 7. DACx0504EVM DAC Signal Connections
Name Connector Description
DACOUT0 J2-2 DAC output voltage
DACOUT1 J2-4 DAC output voltage
DACOUT2 J2-6 DAC output voltage
DACOUT3 J2-8 DAC output voltage
GAIN J2-10 DAC gain
RSTSEL J2-12 DAC reset select
REFDIV J2-14 DAC reference divider
LDAC J2-16 DAC Load DAC
4.5 SPI Communication Signals and Digital Inputs
The SPI signals are located on various test points and are described in Table 8, along with the digital input
signals of the DACx0504 device.
Table 8. SPI Signal Definition
Name Connector Description
SCLK TP1 Serial interface clock
MOSI TP3 Serial interface data input
MISO TP4 Serial interface data output
CS TP2 Active-low serial data enable

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5 DACx0504EVM Software Overview
This section discusses how to use the DACx0504EVM software.
5.1 Starting the DACx0504EVM Software
Once the DACx0504EVM software is installed, a restart may be required by Windows. To launch the
software, locate the Texas Instruments folder in the All Programs menu and select the ‘DAC80504 EVM’
icon.
Figure 6. DACx0504EVM GUI Location
This section describes the features of the DACx0504EVM software. The software, as shown in Figure 7,
provides basic control of all the registers and functions to the DACx0504 device. If the USB2ANY is
correctly connected, the STATUS should display “HARDWARE CONNECTED”. If the USB2ANY is not
properly connected or not connected at all, the STATUS will display “DEMO”. If the GUI is not displaying
the “CONNECTED” status while the USB2ANY is connected, unplug and reconnect the USB2ANY and re-
launch the GUI software.
Figure 7. DACx0504EVM GUI—Power On
5.2 DACx0504EVM Software Features
The DACx0504EVM incorporates interactive functions that help configure the DACx0504 device. These
functions are built into several GUI pages, as shown in Figure 8. The Page Selection menu allows the
user to switch between the pages; each page representing a feature of the software.
Figure 8. DACx0504EVM Software Page Selection
5.2.1 DACx0504EVM Low Level Configuration Page
The Register Map page of the DACx0504EVM allows the user to access low-level communication directly
with the registers of the DACx0504. Selecting a register on the Register Map list presents a description of
the values in that register as well as shows information on the address of the register’s, default value,
size, and current value. Values can be read and written to the registers by writing to the Value or bit field
of the GUI.

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Figure 9. Low Level Configuration Page
The values of the register map can also be saved by pressing the Save Configuration button under the
File menu option. Additionally, the configuration files can be accessed through the Load Configuration
button.
Other options selectable by the user are the Update Mode,Write Selected (red box),Read Selected
(orange box),Write Modified (gray box), and Read All (yellow box) buttons. All buttons are displayed in
Figure 10.
Figure 10. Low Level Configuration Page Available Options
If Update Mode is selected to “Immediate”, all changes to register values will update immediately, while
“Deferred” allows the user to modify the value of a register without taking effect until the Write Selected, or
Write Modified button is pressed.
The Read Selected button allows individual register reads, while the Read All button reads the status of all
registers located in the register map.