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SLAU778A – June 2018 – Revised December 2018

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Copyright © 2018, Texas Instruments Incorporated

DAC81408EVM

User's Guide

SLAU778A – June 2018 – Revised December 2018

DAC81408EVM

This user's guide describes the characteristics, operation, and use of the DAC81408 evaluation module
(EVM). This document also discusses the proper setup and configuration of both software and hardware,
and reviews various aspects of program operation. Throughout this document, the terms evaluation board,
evaluation module, and EVM are synonymous with the DAC81408EVM. A complete circuit description,
schematic diagram, and bill of materials are also included in this document.

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Содержание DAC81408EVM

Страница 1: ...aracteristics operation and use of the DAC81408 evaluation module EVM This document also discusses the proper setup and configuration of both software and hardware and reviews various aspects of program operation Throughout this document the terms evaluation board evaluation module and EVM are synonymous with the DAC81408EVM A complete circuit description schematic diagram and bill of materials ar...

Страница 2: ...ware Page Selection 10 9 Low Level Configuration Page 11 10 Low Level Configuration Page Options 11 11 High Level Configuration Page 12 12 DAC81408EVM Board Schematic 13 13 DAC81408EVM PCB Components Layout 14 14 Top Layer 15 15 Layer 2 Ground Plane 16 16 Layer 3 Power Plane 17 17 Bottom Layer 18 List of Tables 1 Contents of DAC81408EVM Kit 3 2 Required Components Not Included in DAC81408EVM Kit 3...

Страница 3: ...lated software at the TI website www ti com Table 1 Contents of DAC81408EVM Kit Item Quantity DAC81408EVM evaluation board PCB 1 Table 2 Required Components Not Included in DAC81408EVM Kit Item Quantity USB2ANY interface adapter 1 1 2 Related Documentation from Texas Instruments The following document provides information regarding Texas Instruments integrated circuits used in the assembly of the ...

Страница 4: ...nnect the USB2ANY to the EVM board align and firmly connect the keyed ribbon connector to the J8 connector Verify that the connection is snug because loose connections may cause intermittent operation 2 1 2 Power Configurations The DAC81408EVM provides electrical connections to the device supply pins The connectors and optional configurations are shown in the Table 4 Table 4 Power Supply Inputs Co...

Страница 5: ... downloaded to the PC navigate to the DAC81408EVM folder and run the Setup_DAC81408_EVM exe file as shown in Figure 2 When the 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 DAC81408 EVM as shown in Figure 2 Figure 2 Launching Software Setup T...

Страница 6: ...xternal REFGND REFGND selection J10 1 2 USB2ANY 3 3 V on J8 5 2 3 external VIO on J7 4 VIO selection J11 1 2 VREF from REF5025 2 3 external VREF on J7 1 VREF selection note deselect both before selecting internal reference J12 2 3 VSS on J7 6 1 2 GND VSS selection 3 1 1 Theory of Operation for DAC81408 Hardware The block diagram of the DAC81408EVM board is displayed in Figure 4 The EVM board conne...

Страница 7: ...ough their respective digital test points Table 6 provides the pin definitions for this connector Table 7 provides the corresponding test points for the SPI signals Table 6 J8 USB2ANY Pin Definitions Pin Signal Description 1 GPIO7 General purpose I O 2 CS GPIO6 CS or 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 GPIO...

Страница 8: ...age OUT1 J1 28 DAC output voltage OUT2 J1 30 DAC output voltage OUT3 J1 32 DAC output voltage OUT4 J1 2 DAC output voltage OUT5 J1 4 DAC output voltage OUT6 J1 6 DAC output voltage OUT7 J1 8 DAC output voltage ALMOUT J1 1 DAC alarm output TEMPOUT J1 3 DAC temperature output REFGND J1 5 DAC REFGND VREF J1 7 DAC reference GND J1 9 J1 11 J1 13 J1 15 J1 17 J1 19 J1 21 J1 23 J1 25 J1 27 J1 29 J1 31 DAC...

Страница 9: ...tware 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 DAC81408 EVM icon Figure 6 DAC81408EVM GUI Location Figure 7 shows that the USB2ANY hardware is correctly connected because the status bar at the bottom of the screen displays HARDWARE CONNECTED If the USB2ANY is not properly connected or not co...

Страница 10: ...nu to switch between the pages with each page representing a feature of the software Figure 8 DAC81408EVM Software Page Selection 3 2 2 1 Low Level Configuration Page The DAC81408 EVM Register Map page shown in Figure 9 provides access to low level communication directly with the DAC81408 registers Selecting a register on the Register Map list shows a description of the values in that register as ...

Страница 11: ...guration button Other selectable options include the Update Mode Write Selected Read Selected Write Modified and Read All buttons All buttons are displayed in Figure 10 Figure 10 Low Level Configuration Page Options If Immediate is selected under Update Mode all changes to register values update immediately Use the Deferred option to modify the value of a register without taking effect until the W...

Страница 12: ...played in Figure 11 Figure 11 High Level Configuration Page Power Down The power down bits of all eight DAC channels and the global power down bit are all enabled by default Both the device and individual channels must be powered up in order to get output Reference The internal voltage reference is by default OFF on DACx1408 The EVM selects the onboard reference by default Output Range The DACx140...

Страница 13: ...ocumentation Feedback Copyright 2018 Texas Instruments Incorporated DAC81408EVM 4 Schematic PCB Layout and Bill of Materials This section contains the schematic diagram printed circuit board layout and a complete bill of materials for the DAC81408EVM 4 1 Board Schematic Figure 12 DAC81408EVM Board Schematic ...

Страница 14: ...2018 Revised December 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated DAC81408EVM 4 2 PCB Components Layout Figure 13 through Figure 17 show the layout of the components for the DAC81408EVM board Figure 13 DAC81408EVM PCB Components Layout ...

Страница 15: ...w ti com Schematic PCB Layout and Bill of Materials 15 SLAU778A June 2018 Revised December 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated DAC81408EVM Figure 14 Top Layer ...

Страница 16: ...ic PCB Layout and Bill of Materials www ti com 16 SLAU778A June 2018 Revised December 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated DAC81408EVM Figure 15 Layer 2 Ground Plane ...

Страница 17: ...com Schematic PCB Layout and Bill of Materials 17 SLAU778A June 2018 Revised December 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated DAC81408EVM Figure 16 Layer 3 Power Plane ...

Страница 18: ...ematic PCB Layout and Bill of Materials www ti com 18 SLAU778A June 2018 Revised December 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated DAC81408EVM Figure 17 Bottom Layer ...

Страница 19: ...0 X7R AEC Q200 Grade 1 1210 1210 UMJ325KB7106KMHT Taiyo Yuden C9 1 1000pF CAP CERM 1000 pF 50 V 10 X7R 0603 0603 C0603C102K5RACTU Kemet C16 C17 C19 3 1uF CAP CERM 1 uF 25 V 10 X5R 0603 0603 C1608X5R1E105K080A C TDK H1 H2 H3 H4 4 Screw Pan Head M3 Screw M3 29311 Keystone J1 1 Header 100mil 16x2 Tin SMT 16x2 Header TSM 116 01 T DV P Samtec J2 J3 J9 3 Header 100mil 2x1 Gold with Tin Tail SMT 2x1 Head...

Страница 20: ... RES 1 00 1 0 1 W 0603 0603 RC0603FR 071RL Yageo America SH J1 SH J2 SH J3 SH J4 4 1x2 Shunt 100mil Gold plated Black Shunt SNT 100 BK G Samtec TP1 TP2 TP3 TP4 TP5 TP11 TP13 7 Test Point Compact Red TH Red Compact Testpoint 5005 Keystone TP6 TP7 TP8 TP9 TP10 TP14 TP15 TP16 8 Test Point Miniature SMT Test Point Miniature SMT 5019 Keystone U1 1 8 Channel 16 Bit High Voltage Output DAC with Precision...

Страница 21: ...corporated Revision History Revision History Changes from Original June 2018 to A Revision Page Deleted USB2ANY adapter from Table 1 3 Added new Table 2 3 Changed contents of Table 4 4 Changed connector pin numbers in Table 5 to match the connector pin numbers listed in Table 4 6 Changed connector numbers in Table 8 updated for clarity 8 ...

Страница 22: ...y set forth above or credit User s account for such EVM TI s liability under this warranty shall be limited to EVMs that are returned during the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty If TI elects to repair or replace such EVM TI shall have a reasonable time to repair such EVM or provide replacements Repaired EVMs shall be warr...

Страница 23: ...the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this list having a gain greater than the maximum gain indicated for that type are strictly prohibited for use with this device Concernant les EVMs avec antennes détachables Conformément à la réglementation d Industrie Canada le présent émetteur radio peut fo...

Страница 24: ...ed loads Any loads applied outside of the specified output range may also result in unintended and or inaccurate operation and or possible permanent damage to the EVM and or interface electronics Please consult the EVM user guide prior to connecting any load to the EVM output If there is uncertainty as to the load specification please contact a TI field representative During normal operation even ...

Страница 25: ...COST OF REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF USE LOSS OF DATA OR BUSINESS INTERRUPTION NO CLAIM SUIT OR ACTION SHALL BE BROUGHT AGAINST TI MORE THAN TWELVE 12 MONTHS AFTER THE EVENT THAT GAVE RISE TO THE CAUSE OF ACTION HAS OCCURRED 8 2 Specif...

Страница 26: ...se resources are subject to change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reproduction and display of these resources is prohibited No license is granted to any other TI intellectual property right or to any third party intellectual property right TI disclaims responsibility for...

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