Texas Instruments DACx0504 series User Manual

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.

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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Contents

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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

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.

List of Tables

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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 (800) 477-8924 or the Product Information Center at (972) 644-5580. When ordering, identify the document by both title and literature number.

Overview

Table 2. Related Documentation

Document Literature Number

DACx0504 product data sheet SLASE73

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DACx0504 Evaluation Module

USB2ANY

Connection

DACx0504

4-CH Output,

Gain,

RSTSEL,

REFDIV,

LDAC

5-V Reference

(Optional)

External VDD/VIO Power

(Test Point)

Power

SPI

Power Supply PC

DACx0504EVM USB2ANY

DACx0504EVM Hardware Setup

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.

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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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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

DACx0504EVM Hardware Setup

Testpoints SPI Signal

TP1 SCLK TP2 CS TP3 SDI TP4 SDO

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DACx0504 Evaluation Module

DACx0504EVM Software Setup

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.

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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.)

DACx0504 Evaluation Module

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

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.

DACx0504EVM Hardware Overview

controller

Table 6. DACx0504EVM Power Supply Configuration

ConnectorConnection 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.

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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 relaunch the GUI software.

DACx0504EVM Software Overview

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.

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5.2.2 DACx0504EVM High Level Configuration Page

The High Level Configuration page provides an interface to observe and control the different data registers, modes, and configurations available for the DACx0504 device. This page is displayed in

Figure 11.

DACx0504EVM Software Overview

Internal Reference: By default, the internal reference is “ON”, which is displayed on the Internal Reference button. The reference divider bit is also disabled at startup with a division denominator of “1”.

When pressed, the reference divider bit is set to “1”, which changes the denominator value to “2” – this essentially halves the reference supply. This reference division provides flexibility when achieving specific DAC output ranges; however, the reference and DAC output should be configured to ensure there is sufficient headroom for VDD during normal operation. More information related to the reference divider is shown in the DACx0504 data sheet.

Gain: The Gain buttons set the gain for the corresponding DAC outputs. At startup, the gain bit is cleared to “0”, which sets the gain to 1. When this bit is set, the corresponding DAC has a gain of 2.

DAC Outputs: The DAC outputs can be enabled or disabled via the DAC ON button. The DAC outputs are enabled by default. To write to the DACx Register, type the 16-bit hexadecimal value into the corresponding DAC OUT Hex input field.

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Figure 11. High Level Configuration Page

DACx0504 Evaluation Module

DNC

VIN

TEMP

GND

TRIM/NR

VOUT

DNC

REF5050AID

+5VREF

VDD

GND

GNDGND

1µFC10.1µFC2100pF

1µF

10µF

GND

1µF

JP3

VDD

VIO

JP1 VIO

TP7 VREF

TP1 SCLK

TP2 \CS

TP3 SDI

TP4 SDO

TP5

TP6 VDD

GND

1 2 3 4 5 6 7 8 9 10

RXD_MISO USB_3p3

CS_GPIO6 TXD_MOSI

SCLK_GPIO2

USB2ANY Connection

GND

SCLK_GPIO2 CS_GPIO6 TXD_MOSI RXD_MISO

USB_3p3

SCLK_GPIO2

CS_GPIO6

10.0k

10.0kR310.0k

JP2

JP4

JP512JP6

GND

TXD_MOSI

10.0k

VIO

RXD_MISO

GND

U2A_GPIO7

U2A_GPIO3 U2A_GPIO1 U2A_GPIO0 U2A_GPIO7

U2A_GPIO3 U2A_GPIO1 U2A_GPIO0

1µFC80.1µF

TP8

VIO

TP9

560pF

C10

GND

12 34 56 78 910 1112 1314 1516

J22.7V to 5.5V

1.7V to 5.5V

GND

OUT0

OUT1

OUT2

OUT3

GAIN

RSTSEL

REFDIV

LDAC

REF

SCLK

SDI

SDO/ALARM

VDD

VIO

PAD

DAC80504RTER

DACx0504EVM Documentation

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6 DACx0504EVM Documentation

This section contains the complete bill of materials and schematic diagram for the DACx0504EVM.

6.1 DACx0504EVM Board Schematic

Figure 12 illustrates the DACx0504EVM board schematic.

Figure 12. DACx0504EVM Board Schematic

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6.2 DACx0504EVM PCB Components Layout

Figure 13 shows the layout of the components for the DACx0504EVM board.

DACx0504EVM Documentation

Figure 13. DACx0504EVM PCB Components Layout

Figure 14. Top Layer

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Figure 15. Top Solder

DACx0504 Evaluation Module

Figure 16. Bottom Layer

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DACx0504EVM Documentation

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6.3 DACx0504EVM Bill of Materials

Table 9 lists the DACx0504 BOM.

(1)

Unless otherwise noted in the Alternate Part Number or Alternate Manufacturer columns, all parts may be substituted with equivalents.

Table 9. DACx0504EVM Bill of Materials

(1)

Designator Qty Value Description Package Reference Part Number Manufacturer Alternate Part

Number

Alternate Manufacturer

!PCB 1 Printed Circuit Board PA049 Any - C1, C4, C6, C7, C8 5 1uF CAP, CERM, 1uF, 25V, +/-10%, X5R, 0603 0603 C1608X5R1E105K080AC TDK C2, C9 2 0.1uF CAP, CERM, 0.1uF, 50V, +/-10%, X7R, 0603 0603 C0603C104K5RACTU Kemet C3 1 100pF CAP, CERM, 100pF, 50V, +/-5%, C0G/NP0, 0603 0603 GRM1885C1H101JA01D Murata C5 1 10uF CAP, TA, 10 µF, 16 V, +/- 10%, 0.8 ohm, SMD 3528-21 TPSB106K016R0800 AVX C10 1 560pF CAP,CERM, 560 pF, 25 V, +/- 5%, C0G/NP0, 0603 0603 GRM1885C1E561JA01D Murata H9, H10, H11, H12 4 Bumpon, Hemisphere, 0.44 X 0.20, Clear Transparent Bumpon SJ-5303 (CLEAR) 3M J1 1 Header(Shrouded), 2.54mm, 5x2, Gold, TH Header, 2.54mm, 5x2, TH AWHW-10G-0202-T Assman WSW J2 1 Header, 2.54mm, 8x2, Gold, SMT Header, 2.54mm, 8x2, SMT TSM-108-01-L-DV Samtec JP1, JP2, JP3, JP4,

JP5, JP6

6 Header, TH, 100mil, 2x1, Gold plated, 230 mil above insulator 2x1 Header TSW-102-07-G-S Samtec

LBL1 1 Thermal Transfer Printable Labels, 0.650" W x 0.200" H - 10,000

per roll

PCB Label 0.650 x 0.200 inch THT-14-423-10 Brady

R1, R2, R3, R4, R5,R66 10.0k RES, 10.0k ohm, 1%, 0.1W, 0603 0603 RC0603FR-0710KP Yageo America

SH-J1, SH-J2, SH-J3, SH-J4, SH-J5, SH-J6, SH-J7, SH-J8, SH-J9, SH-J10

10 Shunt,100mil, Gold plated, Black Shunt 2 pos. 100 mil 881545-2 TEConnectivity

TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9

9 Test Point, Miniature, SMT Test Point, Miniature, SMT 5019 Keystone

U1 1 Quad, True 16-/14-/12-Bit, SPI Voltage Output DAC with

Precision Internal Reference, RTE0016D (WQFN-16)

RTE0016D DAC80504RTER,

DAC70504RTER, DAC60504RTER

Texas Instruments DAC80504RTET,

DAC70504RTET, DAC60504RTET

Texas Instruments

U2 1 Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE,

D0008A

D0008A REF5050AID Texas Instruments

FID1, FID2, FID3 0 Fiducial mark. There is nothing to buy or mount. Fiducial N/A N/A

Revision History

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Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Original (July 2017) to A Revision ........................................................................................................... Page

• Changed all instances of DAC80504 to DACx0504.................................................................................. 1

• Changed the DAC from eight-channel to four-channel............................................................................... 3

• Changed part number from RC0603FR-0710KL to RC0603FR-0710KP in Table 9: DACx0504EVM Bill of Materials.... 15

• Added part numbers DAC70504RTER and DAC60504RTER to designator U1 in Table 9: DACx0504EVM Bill of

Materials .................................................................................................................................. 15

• Added alternate part numbers DAC70504RTET and DAC60504RTET to designator U1 in Table 9: DACx0504EVM Bill of

Materials .................................................................................................................................. 15

Revision History

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Texas Instruments DACx0504 series User Manual

Specifications and Main Features

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User Manual