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DAC81416EVM
User Manual
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Texas Instruments DAC81416EVM, DAC81408EVM User Manual

User's Guide
SLAU777A–June 2018–Revised December 2018

DAC81416EVM

SLAU777A–June 2018–Revised December 2018
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Copyright © 2018, Texas Instruments Incorporated
DAC81416EVM
1
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Contents
1 Overview ..................................................................................................................... 3
2 System Setup ................................................................................................................ 4
3 Detailed Description ......................................................................................................... 6
4 Schematic, PCB Layout, and Bill of Materials.......................................................................... 12
List of Figures
1 DAC81416EVM Hardware Setup.......................................................................................... 4
2 Launching Software Setup ................................................................................................. 5
3 DAC81416EVM Installation Path .......................................................................................... 5
4 DAC81416EVM Hardware Block Diagram ............................................................................... 6
5 DAC Output Header......................................................................................................... 8
6 DAC81416EVM GUI Location.............................................................................................. 9
7 DAC81416EVM GUI Connection Detection.............................................................................. 9
8 DAC81416EVM Software Page Selection .............................................................................. 10
9 Low Level Configuration Page............................................................................................ 10
10 Low Level Configuration Page Options ................................................................................. 11
11 High Level Configuration Page........................................................................................... 11
12 DAC81416EVM Board Schematic ....................................................................................... 12
13 DAC81416EVM PCB Components Layout ............................................................................. 13
14 Top Layer ................................................................................................................... 14
15 Layer 2 - Ground Plane ................................................................................................... 15
16 Layer 3 - Power Plane..................................................................................................... 16
17 Bottom Layer................................................................................................................ 17
1 Contents of DAC81416EVM Kit............................................................................................ 3
2 Required Components Not Included in DAC81416EVM Kit ........................................................... 3
3 Related Documentation..................................................................................................... 3
4 Power Supply Inputs ........................................................................................................ 4
5 Jumper Settings.............................................................................................................. 6
6 J8 (USB2ANY) Pin Definitions............................................................................................. 7
7 J8 SPI Signal Test Points .................................................................................................. 7
8 J1 Pin Definitions ............................................................................................................ 8
9 DAC81416 EVM Bill of Materials......................................................................................... 18
Trademarks
Windows is a trademark of Microsoft Corporation. All other trademarks are the property of their respective owners.
List of Tables
2
DAC81416EVM
Copyright © 2018, Texas Instruments Incorporated
SLAU777A–June 2018–Revised December 2018
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1 Overview

The DAC81416EVM is an easy to use platform for evaluating the functionality and performance of the DAC81416 device. The DAC81416 is a 16-channel, buffered, high-voltage output digital-to-analog converter (DAC) in 16-bit resolution with 2.5-V internal reference. This EVM provides bipolar output voltage up to ±20 V and unipolar up to 40 V. The EVM provides the SPI 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. Make sure to verify the latest versions of the related software at the TI website, www.ti.com.
Overview
Table 1. Contents of DAC81416EVM Kit
Item Quantity
DAC81416EVM evaluation board PCB 1
Table 2. Required Components Not Included in
DAC81416EVM 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 DAC81416EVM. This user's guide is available from the TI web site under literature number SLAU777. 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 (800) 477-8924 or the Product Information Center at (972) 644-5580. When ordering, identify the document by both title and literature number.
Table 3. Related Documentation
Document Literature Number
DAC81416 product data sheet SLASEO0
SLAU777A–June 2018–Revised December 2018
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DAC81416EVM
3
USB2ANY
Power Supply
System Setup

2 System Setup

2.1 Hardware Setup

This section provides the overall system setup for the EVM. Use a PC to run the software that provides an interface to the USB2ANY platform. This platform 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 DAC81416EVM.
Figure 1. DAC81416EVM Hardware Setup
2.1.1 Connecting the Hardware
Connect the USB cable from the USB2ANY platform to the PC. To connect 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.
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2.1.2 Power Configurations
The DAC81416EVM provides electrical connections to the device supply pins. The connectors and optional configurations are shown in the Table 4.
Table 4. Power Supply Inputs
Connector.Pin Supply Name Voltage Range
J7.3 GND 0 V J7.4 VIO 1.7 V to 5.5 V J7.5 VDD/VAA 4.5 V to 5.5 V
J7.6 VSS J7.7 VCC 9 V to 41.5 V J8.5 VIO
2.1.3 Electrostatic Discharge Warning
Many of the components on the DAC81416EVM 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.
–21.5 V to 0 V Note: 9 V < (VCC – VSS) < 43 V
1.7 V to 5.5 V Note: J10 selects between J7.4 and J8.5
4
DAC81416EVM
Copyright © 2018, Texas Instruments Incorporated
SLAU777A–June 2018–Revised December 2018
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2.2 Software Setup

This section provides the procedure for EVM software installation.
2.2.1 Operating Systems
The EVM software is compatible with the Windows™ 7, Windows 8, and Windows 10 operating systems.
2.2.2 Software Installation
The software is available through the EVM product folder on the TI website. After the software is downloaded to the PC, navigate to the DAC81416EVM folder, and run the Setup_DAC81416_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\DAC81416 EVM as shown in Figure 3.
System Setup
Figure 2. Launching Software Setup
The software installation automatically copies the required LabVIEW files and drivers to the local machine. Make sure to verify that the USB2ANY is not connected before the software installation, or the file and driver installation may be affected.
Figure 3. DAC81416EVM Installation Path
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DAC81416EVM
5
DAC81416
USB2ANY Connector
Power and
External
Reference
Input
Connector
Output
Connector
Onboard Jumper
Settings
Onboard
Reference
Detailed Description

3 Detailed Description

3.1 Hardware Description

The following sections provide detailed information on the EVM hardware and jumper configuration settings. Table 5 displays the default configurations of all jumper connections on the DAC81416EVM. Connect the USB cable from the USB2ANY to the PC.
Table 5. Jumper Settings
Jumper Default Position Available Option Description
J2 Open: RESET deactivated Closed: RESET activated RESET activation or deactivation J3 Open: CLR deactivated Closed: CLR activated CLR activation or deactivation J9 Closed: GND Open: external 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 J12 2-3: VSS on J7.6 1-2: GND VSS selection
3.1.1 Theory of Operation for DAC81416 Hardware
The block diagram of the DAC81416EVM board is displayed in Figure 4. The EVM board connects to external power supplies VCC, VSS, VDD/VAA and VIO through an external 7-pin terminal block. This connector also provides an option for an external reference. The 32-pin header provides the 16 DAC outputs and other signals, such as VREF, TEMPOUT and ALMOUT. The 10-pin wire-to-board connector provides an interface to the USB2ANY platform. The SPI signals are provided either by using the USB2ANY header or the test points. The USB2ANY also provides an optional 3.3-V VIO selectable by jumper settings. There is also an onboard 2.5-V reference source.
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VREF selection note: deselect both before selecting internal reference
Figure 4. DAC81416EVM Hardware Block Diagram
6
DAC81416EVM
Copyright © 2018, Texas Instruments Incorporated
SLAU777A–June 2018–Revised December 2018
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3.1.2 Signal Definition of USB2ANY
The DAC81416EVM provides a hardware connector (J8) that connects to the USB2ANY interface board The USBANY platform supplies 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. 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
SCLK/GPIO2 SPI SCLK or general-purpose
8 9 GPIO1 General-purpose I/O
10 GPIO0 General-purpose I/O
Detailed Description
I/O
3.1.3 DAC Signal Pins
The DAC81416EVM provides access to all DAC outputs through connection J1, as shown in Figure 5, and listed in Table 8.
Table 7. J8 SPI Signal Test Points
Test Points SPI Signal
TP6 MISO, SDO TP7 CS TP8 MOSI, SDI TP9 LDAC
TP10 SCLK
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Detailed Description
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Figure 5. DAC Output Header
Table 8. J1 Pin Definitions
Connector/Pin Supply Name Voltage Range
OUT0 J1.18 DAC output voltage OUT1 J1.20 DAC output voltage OUT2 J1.22 DAC output voltage OUT3 J1.24 DAC output voltage OUT4 J1.26 DAC output voltage OUT5 J1.28 DAC output voltage OUT6 J1.30 DAC output voltage OUT7 J1.32 DAC output voltage OUT8 J1.2 DAC output voltage
OUT9 J1.4 DAC output voltage OUT10 J1.6 DAC output voltage OUT11 J1.8 DAC output voltage OUT12 J1.10 DAC output voltage OUT13 J1.12 DAC output voltage OUT15 J1.14 DAC output voltage OUT16 J1.16 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 ground
8
DAC81416EVM
Copyright © 2018, Texas Instruments Incorporated
SLAU777A–June 2018–Revised December 2018
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