Texas Instruments AFE539A4EVM User manual

User’s Guide
AFE539A4EVM
ABSTRACT
This user’s guide describes the characteristics, operation, and use of the AFE539A4EVM evaluation module
(EVM). This EVM is designed to evaluate the performance of the AFE539A4. Throughout this document, the
terms evaluation board, evaluation module, and EVM are synonymous with the AFE539A4EVM. This document
includes a schematic, reference printed-circuit board (PCB) layouts, and a complete bill of materials.
www.ti.com
SLAU859 – JULY 2021
Submit Document Feedback
AFE539A4EVM 1
Copyright © 2021 Texas Instruments Incorporated

Table of Contents
1 Overview..................................................................................................................................................................................4
1.1 Kit Contents........................................................................................................................................................................4
1.2 Related Documentation from Texas Instruments............................................................................................................... 4
2 System Setup.......................................................................................................................................................................... 5
2.1 Software Setup...................................................................................................................................................................5
2.2 Hardware Setup................................................................................................................................................................. 7
3 Detailed Description............................................................................................................................................................... 9
3.1 Hardware Description.........................................................................................................................................................9
3.2 Software Description........................................................................................................................................................ 14
4 Schematic, PCB Layout, and Bill of Materials................................................................................................................... 18
4.1 BOOSTXL-DAC-PORT Schematic...................................................................................................................................19
4.2 AFE539A4EVM Schematic.............................................................................................................................................. 21
4.3 PCB Components Layout.................................................................................................................................................22
4.4 BOOSTXL-DAC-PORT Bill of Materials...........................................................................................................................24
4.5 AFE539A4EVM Bill of Materials.......................................................................................................................................25
List of Figures
Figure 2-1. Software Installation Path..........................................................................................................................................5
Figure 2-2. TM4C1294 Connected TI LaunchPad™ Evaluation Kit Setup..................................................................................6
Figure 2-3. TI Cloud Agent Installation........................................................................................................................................ 6
Figure 2-4. Hardware Setup........................................................................................................................................................ 7
Figure 2-5. Hardware Setup Guidelines...................................................................................................................................... 8
Figure 3-1. BOOSTXL-DAC-PORT Hardware Block Diagram.....................................................................................................9
Figure 3-2. AFE539A4EVM Hardware Simplified Schematic.................................................................................................... 12
Figure 3-3. AFE539A4EVM GUI Location................................................................................................................................. 14
Figure 3-4. AFE539A4EVM GUI Connection Detection............................................................................................................ 14
Figure 3-5. Home Page............................................................................................................................................................. 15
Figure 3-6. Setup Page..............................................................................................................................................................16
Figure 3-7. PI Controller Page................................................................................................................................................... 16
Figure 3-8. Register Map Page..................................................................................................................................................17
Figure 3-9. Register Page Options............................................................................................................................................ 17
Figure 3-10. Collateral Page......................................................................................................................................................18
Figure 4-1. BOOSTXL-DAC-PORT Schematic Page 1............................................................................................................. 19
Figure 4-2. BOOSTXL-DAC-PORT Schematic Page 2............................................................................................................. 20
Figure 4-3. AFE539A4EVM Schematic..................................................................................................................................... 21
Figure 4-4. BOOSTXL-DAC-PORT PCB Components Layout..................................................................................................22
Figure 4-5. BOOSTXL-DAC-PORT Top Layer...........................................................................................................................22
Figure 4-6. BOOSTXL-DAC-PORT Bottom Layer..................................................................................................................... 22
Figure 4-7. AFE539A4EVM PCB Components Layout..............................................................................................................23
Figure 4-8. AFE539A4EVM Layers........................................................................................................................................... 23
List of Tables
Table 1-1. Contents of AFE539A4EVM Kit.................................................................................................................................. 4
Table 1-2. Required Components—not Included With Kit........................................................................................................... 4
Table 1-3. Related Documentation.............................................................................................................................................. 4
Table 2-1. AFE539A4EVM Power Supply Inputs.........................................................................................................................7
Table 2-2. BOOSTXL-DAC-PORT Jumper Settings.................................................................................................................... 7
Table 3-1. BOOSTXL-DAC-PORT J13 Pin Definitions.............................................................................................................. 10
Table 3-2. BOOSTXL-DAC-PORT J14 Pin Definitions.............................................................................................................. 10
Table 3-3. BOOSTXL-DAC-PORT J4 Pin Definitions.................................................................................................................11
Table 3-4. BOOSTXL-DAC-PORT J5 Pin Definitions.................................................................................................................11
Table 3-5. BOOSTXL-DAC-PORT J12 Pin Definitions...............................................................................................................11
Table 3-6. AFE539A4EVM J2 Pin Definitions............................................................................................................................ 13
Table 3-7. AFE539A4EVM J1 Pin Definitions............................................................................................................................ 13
Table 4-1. BOOSTXL-DAC-PORT Bill of Materials....................................................................................................................24
Table 4-2. AFE539A4EVM Bill of Materials............................................................................................................................... 25
Table of Contents www.ti.com
2AFE539A4EVM SLAU859 – JULY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated

Trademarks
LaunchPad™ is a trademark of Texas Instruments.
Windows™ is a trademark of Microsoft Corporation.
macOS™ is a trademark of Apple Inc.
Linux™ is a trademark of Linus Torvalds.
All trademarks are the property of their respective owners.
www.ti.com Trademarks
SLAU859 – JULY 2021
Submit Document Feedback
AFE539A4EVM 3
Copyright © 2021 Texas Instruments Incorporated

1 Overview
The AFE539A4EVM is an easy-to-use platform to evaluate the functionality and performance of the AFE539A4
commercial device.
The AFE539A4 is a 10-bit, quad-channel, smart analog front end (AFE). Each analog channel can be configured
as a digital-to-analog converter (DAC), analog-to-digital-converter (ADC), or comparator. The four DAC outputs
are capable of both voltage and current output. The AFE539A4 supports high-impedance (Hi-Z) power-down
mode, and a Hi-Z output during a power-off condition. The DAC outputs provide a force-sense option for
use as a programmable comparator and current sink. This device has an integrated state machine that is
preprogrammed as a proportional-integral (PI) controller. The AFE539A4 is an excellent choice for thermoelectric
cooling (TEC) control, temperature control, and dynamic headroom control applications. The multifunction GPIO,
function generation, and nonvolatile memory (NVM) enable this smart AFE to be used without a processor. The
device automatically detects I2C or SPI interfaces and also has an internal reference.
1.1 Kit Contents
Table 1-1 details the contents of the EVM kit. Contact the nearest TI Product Information Center if any
component is missing. Make sure to verify the latest versions of the related software at the Texas Instruments
website, www.ti.com.
Table 1-1. Contents of AFE539A4EVM Kit
Item Quantity
AFE539A4EVM evaluation board PCB 1
Table 1-2 lists additional components that are required, but not included with the EVM kit.
Table 1-2. Required Components—not Included With Kit
Item Quantity
BOOSTXL-DAC-PORT
Digital-to-analog converter (DAC) BoosterPack™ plug-in module 1
TM4C1294 Connected LaunchPad™ Evaluation Kit (EK-TM4C1294XL)
(In this document, LaunchPad™ Evaluation Kit is referred to as TI launchpad) 1
These required components are available for purchase from the Texas Instruments website at 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 AFE539A4EVM. This user's guide is available from the TI web site under literature number
SLAU859. 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 , or call
the Texas Instruments Literature Response Center at [phone] or the Product Information Center at (972)
644-5580. When ordering, identify the document by both title and literature number.
Table 1-3. Related Documentation
Document Literature Number
AFE539A4 product data sheet SBASAC1
Overview www.ti.com
4AFE539A4EVM SLAU859 – JULY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated

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™ 10, macOS™, and Linux™ operating systems. However,
while the EVM software is compatible with macOS and Linux operating systems, the EVM has only been tested
with the Windows 10 operating system.
2.1.2 Software Installation
The software is available on the device product folder, and can also be found in the GUI Composer Gallery.
Search for AFE539A4EVM in the GUI Composer Gallery. Use the down-arrow symbol on the AFE539A4
tile to download the software. There are two downloads: AFE539A4EVM GUI and GUI Composer Runtime.
Download both, or just download the EVM GUI; the run-time file can be downloaded through the EVM GUI
during installation. The software can also be run online by clicking the AFE539A4 tile. After the software is
downloaded, navigate to the download folder, and run the AFE539A4EVM software installer executable.
When the AFE539A4EVM 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\AFE539A4EVM as shown in Figure 2-1.
Figure 2-1. Software Installation Path
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 run-time file also installs the USB
drivers, unless the drivers are already installed. The software installation automatically copies the required files
and drivers to the local machine.
www.ti.com System Setup
SLAU859 – JULY 2021
Submit Document Feedback
AFE539A4EVM 5
Copyright © 2021 Texas Instruments Incorporated

2.1.3 TI LaunchPad™ Evaluation Kit Firmware Upgrade
The firmware for the TI launchpad 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 Debug port of the TI launchpad to download firmware.
The firmware is programmed to the TI launchpad using UniFlash, an online tool. This link is also provided on the
Setup page of the GUI. The firmware bin file can be found at <Download
Directory>\AFE539A4EVM_1.0.0_installer_win\install_image_AFE539A4EVM\AFE539A4EVM\firmware\acctrl.0.
3.0.3b.bin after unzipping the install_image_AFE539A4EVM.zip file.
Follow these steps to upgrade the firmware and install the device drivers successfully:
1. Mount jumper JP1 on the TI launchpad on the ICDI position, as shown in part 1 of Figure 2-2.
Place Jumper 1
on ICDI
12 3 4
Move Jumper
1 back to OTG
Figure 2-2. TM4C1294 Connected TI LaunchPad™ Evaluation Kit Setup
2. Connect the USB cable to the port on the debug side of the board, as shown in part 2 of Figure 2-2.
3. Open UniFlash.
4. Click on Start Now in the Detect Device section.
5. If the GUI Composer framework is being installed for the first time, the browser extension and the TI Cloud
Agent must also be installed. Follow the two-step installation flow prompted on the web page, as shown in
Figure 2-3
Figure 2-3. TI Cloud Agent Installation
6. Press the Refresh or Finish button after the installation is complete. This action should detect the TI
launchpad.
7. Press Start and browse for <Download
Directory>\AFE539A4EVM_1.0.1_installer_win\install_image_AFE539A4EVM.\AFE539A4EVM\firmware\acc
trl.0.3.0.3b.bin.
8. Press Load Image followed by Verify Image.
9. Move jumper JP1 to the OTG position, and connect the USB cable to the port labeled U7, as shown in part 4
of Figure 2-2.
System Setup www.ti.com
6AFE539A4EVM SLAU859 – JULY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated

2.2 Hardware Setup
This section describes the overall system setup for the EVM. The hardware setup contains the TI launchpad,
BOOSTXL-DAC-PORT, and AFE539A4EVM. A computer runs the software that provides an interface to the
AFE539A4EVM through the TI launchpad.
The TI launchpad generates 5 V of power for use as the AFE supply voltage (VDD). The TI launchpad
also generates 3.3 V of power for use with I2C pullup resistors. The IO ports of the TI launchpad and level
translators used on the BOOSTXL-DAC-PORT and AFE539A4EVM withstand maximum IO levels of 3.6 V. The
TI launchpad also generates digital signals used to communicate with the EVM.
The BOOSTXL-DAC-PORT is a generic platform used for catalog DAC and AFE devices that provides a
predefined interface to connect a DAC or AFE 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 upon the
BOOSTXL-DAC-PORT in order to provide extended functions. Figure 2-4 displays the system hardware setup.
DEBUG
USB Port
TI LaunchPad™
Evaluation Kit
BOOSTXL-DAC-PORT
Optional Function
Extender Card
OTG USB
Port (U7)
AFE EVM
Optional
Jumpers/Test
Points
Jumpers/Test Points
Figure 2-4. Hardware Setup
2.2.1 Power Configurations and Jumper Settings
The AFE539A4EVM provides electrical connections to the device supply pins. The connectors and optional
configurations are shown in Table 2-1.
Table 2-1. AFE539A4EVM Power Supply Inputs
EVM Connector Supply Name Voltage Range
J2.1 VDD 1.8 V to 5.5 V (5 V available on TI launchpad), jumper J9.1-2 on BOOSTXL-DAC-PORT
J1.1 GND 0 V
The jumper settings on the BOOSTXL-DAC-PORT are crucial to the proper operation of the AFE539A4EVM.
Table 2-2 provides the details of the configurable jumper settings on the BOOSTXL-DAC-PORT. The BOOSTXL-
DAC-PORT pin and jumper numbers are as shown in Figure 4-1 and Figure 4-2. The AFE539A4EVM pin
numbers are as defined in Figure 4-3.
Table 2-2. BOOSTXL-DAC-PORT Jumper Settings
Jumper Default Position Available Option Description
J3 2-3: External reference 1-2: Onboard 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 1-2: MODE pin connected directly to EVM 2-3: MODE pin connected through level translator TI launchpad controls the MODE pin
J9 1-2: 5-V from TI launchpad 2-3: External VDD 5-V or external VDD
J10 1-2: 3.3-V from TI launchpad 2-3: External VIO 3.3-V or external VIO
J11 Closed: AFE_VIO is connected to VIO Open: AFE_VIO off AFE_VIO on or off
When using the GUI to interface with the AFE539A4, in addition to the jumper settings shown in Table
2-2, connect J13 pin 7 on the BOOSTXL-DAC-PORT to VDD to disable the SPI buffer. The GUI uses I2C
communication and the SPI lines must be disabled.
The AFE539A4 uses the MODE pin to select between programming and standalone modes. Connect the
MODE pin to J13 pin 9 on the BOOSTXL-DAC-PORT. The MODE pin must be pulled low to put the device in
programming mode while using the GUI. Connect the MODE pin to VDD to put the device in standalone mode.
www.ti.com System Setup
SLAU859 – JULY 2021
Submit Document Feedback
AFE539A4EVM 7
Copyright © 2021 Texas Instruments Incorporated

2.2.2 Connecting the Hardware
After the TI launchpad firmware is upgraded as described in Section 2.1.3, and power and jumper configurations
set up as per Section 2.2.1, connect the BOOSTXL-DAC-PORT and AFE539A4EVM as shown in Figure 2-5.
Connect the USB cable from the TI launchpad OTG USB Port (U7) to the computer.
Figure 2-5. Hardware Setup Guidelines
2.2.3 Electrostatic Discharge Caution
Many of the components on the AFE539A4EVM 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.
System Setup www.ti.com
8AFE539A4EVM SLAU859 – JULY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated

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 and AFEs that provides various
options for power supply, reference, communication interfaces, and GPIO for a DAC or AFE EVM. The
AFE539A4 EVM interfaces with a predefined set of pins common to a precision DAC or AFE. The block diagram
of this board is shown in Figure 3-1.
External
Power
I2C
SPI and GPIO
lines
SPI and GPIO
lines
5 V / 3.3 V
Analog IO
Power
External Refererence
AFE EVM Interface
Reference Jumper Settings Power-Supply Jumper Settings
Digital Level
Translator
I2C Level
Translator
Analog and Power Supply Function Extender
TI LaunchPad™ Evaluation Kit
Interface
TI LaunchPad™ Evaluation Kit
Interface
Figure 3-1. BOOSTXL-DAC-PORT Hardware Block Diagram
3.1.1.1 Signal Definition of the BOOSTXL-DAC-PORT
The BOOSTXL-DAC-PORT provides hardware connectors for the TI launchpad (J13, J14), external power (J12),
the AFE539A4EVM (J1, J2), and the external function extender (J4, J5). The descriptions are provided in Table
3-1 through Table 3-5. The pin numbers are as defined in the BOOSTXL-DAC-PORT schematic shown in Figure
4-1 and Figure 4-2.
www.ti.com Detailed Description
SLAU859 – JULY 2021
Submit Document Feedback
AFE539A4EVM 9
Copyright © 2021 Texas Instruments Incorporated

Table 3-1. BOOSTXL-DAC-PORT J13 Pin Definitions
Pin# Signal Description
1 GPIO General-purpose I/O
2 GND GND
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 SPI_BUF_EN Digital, SPI buffer enable
8 GPIO General-purpose I/O
9 EXT_MODE External AFE539A4 MODE signal
10 MCU reset output MCU reset output
11 EXT_MODE External AFE539A4 MODE signal
12 SPI MOSI SPI MOSI
13 GPIO General-purpose I/O
14 SPI MISO SPI MISO
15 GPIO General-purpose I/O
16 GPIO General-purpose I/O
17 GPIO General-purpose I/O
18 CS SPI CS or general-purpose I/O
19 GPIO General-purpose I/O
20 GPIO General-purpose I/O
Table 3-2. BOOSTXL-DAC-PORT J14 Pin Definitions
Pin# Signal Description
1 +3.3V 3.3-V power supply
2 +5V 5-V power supply
3 GPIO General-purpose I/O
4 GND GND
5 GPIO General-purpose I/O
6 GPIO General-purpose I/O
7 GPIO General-purpose I/O
8 GPIO General-purpose I/O
9 MCU reset output MCU reset output
10 VDD_SENSE Sense Input for VDD
11 GPIO General-purpose I/O
12 VIO_SENSE Sense Input for VIO
13 SCLK_A0 SPI SCLK or I2C A0
14 GPIO General-purpose I/O
15 GPIO General-purpose I/O
16 GPIO General-purpose I/O
17 SCL I2C SDA
18 GPIO General-purpose I/O
19 SDA I2C SDA
20 GPIO General-purpose I/O
Detailed Description www.ti.com
10 AFE539A4EVM SLAU859 – JULY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated

Table 3-3. 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 (AFE_FB3)
5 AGND Analog ground
6 AIO6 Analog I/O (AFE_OUT3)
7 AIO8 Analog I/O
8 AGND Analog ground
9 AIO10 Analog I/O
10 AIO12 Analog I/O (AFE_OUT2)
11 AGND Analog ground
12 AIO14 Analog I/O (AFE_FB2)
13 EXT_REF External reference input
14 GND Ground
15 VCC VCC output
16 VDD VDD output
Table 3-4. 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 (AFE_VREF)
5 AGND Analog ground
6 AIO7 Analog I/O (AFE_CAP)
7 AIO9 Analog I/O (AFE_FB0)
8 AGND Analog ground
9 AIO11 Analog I/O (AFE_OUT0)
10 AIO13 Analog I/O (AFE_OUT1)
11 AGND Analog ground
12 AIO15 Analog I/O (AFE_FB1)
13 REFGND External reference ground
14 GND Ground
15 VSS VSS output
16 VIO or DAC_VIO VIO or DAC_VIO output
Table 3-5. BOOSTXL-DAC-PORT J12 Pin Definitions
Pin# Signal Description
1 VCC High-voltage positive power supply
2 VSS High-voltage negative power supply
3 GND Ground
4 EXT_VDD External VDD
5 EXT_VIO External VIO
www.ti.com Detailed Description
SLAU859 – JULY 2021
Submit Document Feedback
AFE539A4EVM 11
Copyright © 2021 Texas Instruments Incorporated

3.1.2 Theory of Operation for the AFE539A4EVM Hardware
A simplified schematic of the AFE539A4EVM board is displayed in Figure 3-2. The EVM board connects to
BOOSTXL-DAC-PORT with two 16-pin connectors. These headers provide access to all of the AFE pins.
VDD
AFE_FB3
AFE_OUT3
AFE_FB2
AFE_OUT2
AFE539A4
AFE_SCLK
AFE_SDO
AFE_SCL
EXT_REF
AFE_SDI
GND
GND
GND
AFE_SYNC
AFE_SDA
AFE_GPIO
AFE_VREF
AFE_CAP
AFE_FB0
AFE_OUT0
AFE_OUT1
AFE_FB1
R7
R5
R6
R8
NC
NC
AFE_MODE
GND
GND
NC
NC
GND
GND
GND
J1 J2
Figure 3-2. AFE539A4EVM Hardware Simplified Schematic
Detailed Description www.ti.com
12 AFE539A4EVM SLAU859 – JULY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated

3.1.2.1 Signal Definition of the AFE539A4EVM
The AFE539A4EVM provides access to all AFE pins through connection J1 and J2, as listed in Table 3-6 and
Table 3-7.
Table 3-6. AFE539A4EVM J2 Pin Definitions
Pin# Signal Description
1 AFE_VDD VDD power supply for AFE
2 AFE_SCLK SPI SCLK
3 AFE_SDO SPI SDO output for AFE
4 AFE_SCL I2C SCL input for AFE
5 EXT_REF External reference input for AFE
6 GND Ground
7 GND Ground
8 GND Ground
9 NC Not connected
10 NC Not connected
11 AFE_FB3 Feedback pin for AFE OUT3
12 AFE_OUT3 Output pin for AFE OUT3
13 GND Ground
14 GND Ground
15 AFE_OUT2 Output pin for AFE OUT2
16 AFE_FB2 Feedback pin for AFE OUT2
Table 3-7. AFE539A4EVM J1 Pin Definitions
Pin# Signal Description
1 GND Ground
2 AFE_SDI SPI SDI signal input for AFE
3 AFE_SYNC SPI SYNC signal input for AFE
4 AFE_SDA I2C SDA input for AFE
5 GND Ground
6 GND Ground
7 NC Not connected
8 NC Not connected
9 AFE_GPIO GPIO input for AFE
10 AFE_MODE MODE input for AFE
11 AFE_VREF MODE/VREF input for AFE
12 AFE_CAP LDO bypass capacitor
13 AFE_FB0 Feedback pin for AFE VOUT0
14 AFE_OUT0 Output pin for AFE VOUT0
15 AFE_OUT1 Output pin for AFE VOUT1
16 AFE_FB1 Feedback pin for AFE VOUT1
www.ti.com Detailed Description
SLAU859 – JULY 2021
Submit Document Feedback
AFE539A4EVM 13
Copyright © 2021 Texas Instruments Incorporated

3.2 Software Description
This section describes the features of the AFE539A4EVM software, and discusses how to use these features.
The software provides basic control of all the registers and functions to the AFE539A4 device.
3.2.1 Starting the Software
To launch the software, locate the Texas Instruments folder in the All Programs menu, and select the
AFE539A4EVM icon.
Figure 3-3. AFE539A4EVM GUI Location
Figure 3-4 shows that if the TI launchpad is connected correctly, the status bar at the bottom of the screen
displays Hardware Connected. If the TI launchpad is not properly connected or not connected at all, the status
bar displays Hardware not connected. If the Hardware not connected status persists even after the hardware
is connected, go to Options → Serial Port, and change the port to another available port with the (Texas
Instruments) or ACCtrl tag. Out of the ports with these tags, one port should connect.
Figure 3-4. AFE539A4EVM GUI Connection Detection
Detailed Description www.ti.com
14 AFE539A4EVM SLAU859 – JULY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated

3.2.2 Software Features
The AFE539A4EVM incorporates interactive functions that help configure the AFE539A4 device. These
functions are built into several GUI pages, as shown in the following subsections. The menu bar on the far
left allows the user to switch between pages, with each menu symbol representing a different feature page of the
software. The menu bar symbols represent the Home, Setup, PI Controller, Register Map, and Collateral pages,
respectively.
3.2.2.1 Home Page
The Home page, shown in Figure 3-5, provides basic information and navigation to other pages.
Figure 3-5. Home Page
www.ti.com Detailed Description
SLAU859 – JULY 2021
Submit Document Feedback
AFE539A4EVM 15
Copyright © 2021 Texas Instruments Incorporated

3.2.2.2 Setup Page
The Setup page, shown in Figure 3-6, guides the user to perform a one-time firmware upgrade for the TI
launchpad, and details how the TI launchpad, BOOSTXL-DAC-PORT, and AFE539A4EVM are stacked.
Figure 3-6. Setup Page
3.2.2.3 PI Controller Page
The PI Controller page, shown in Figure 3-7, provides an interface to quickly configure the PI parameters and
relevant register settings for the AFE539A4 when using the AFE539A4 as a PI controller.
Figure 3-7. PI Controller Page
Detailed Description www.ti.com
16 AFE539A4EVM SLAU859 – JULY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated

3.2.2.4 Register Map Page
The AFE539A4EVM Register Map page, shown in Figure 3-8, allows access to low-level communication directly
with the AFE539A4 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. Data are
written to the registers by entering a value in the value column or by selecting bits in the bit field of the GUI.
Figure 3-8. Register Map Page
The values of the register map can be stored locally by selecting Save Registers under the File menu option.
The stored configuration files can be recalled and loaded by selecting Load Registers.
Figure 3-9 shows the four configuration buttons, Read Register, Read All Registers, Write Register, and Write All
Registers, provided on the Register Map page that allow the user to read from and write to the device registers.
The Write Register and Write All Registers buttons are enabled only in Deferred update mode. Deferred mode
initiates a write operation only when the Write Register or the Write All Registers button is pressed. By default,
Immediate update mode is selected for the Register Map page write operations.
Figure 3-9. Register Page Options
www.ti.com Detailed Description
SLAU859 – JULY 2021
Submit Document Feedback
AFE539A4EVM 17
Copyright © 2021 Texas Instruments Incorporated

3.2.2.5 Collateral Page
The Collateral page, shown in Figure 3-10, provides links for all the collateral on the AFE539A4 device.
Figure 3-10. Collateral Page
4 Schematic, PCB Layout, and Bill of Materials
This section contains the schematics, printed circuit board (PCB) layout diagrams, and a complete bill of
materials for the BOOSTXL-DAC-PORT and AFE539A4EVM.
Detailed Description www.ti.com
18 AFE539A4EVM SLAU859 – JULY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated

4.1 BOOSTXL-DAC-PORT Schematic
3V3 5V
GND
3V3
25V
0.1uF
C6
GND
25V
0.1uF
C11
GND
GND
VIO
MOSI_CLR
33R27
33R28
33R25
33R26CS0_A1
SPI2C_USBBTC_RS T
33R32LDAC
33R6
33R5
33R4
MISO_LDAC_RSTS EL
SCL_USBBTC_RSTSEL_LDAC
SDA_CLR_RSTSEL_LDAC
GND
GND GND
33R11
SCLK_A0
33R45
33R39
33R12
33R13
33R41
1
2
3
4
5
J12
393570005
VCC VS S EXT_VDD EXT_VIO
GND
16V
10uF
C13
16V
10uF
C12
50V
10uF
C15
50V
10uF
C14
GND GND GND GND
VDD
EXT_VDD
5V
TP 1VDD
VIO
EXT_VIO
3V3
TP 3VIO
33R42
VDD
1.0k
R7
GND
VIO
1.0k
R9
GND
33R40
33R44
0R38
0R43
BO_MISO _LDAC_RS TSEL
BO_SCLK_A0
BO_MO S I_CLR
BO_CS 0_A1
BO_SP I2C_US BBTC_RS T
BO_SDA_CLR_RSTSEL_LDAC
D2 CDBU0245
D1 CDBU0245
4.99k
R8
4.99k
R10
VDD Selection
VIO Selection
External Power Supply Interface
Launchpad Interface
Launchpad Interface
Push-pull IO Level Translator
External Power Supply Detection
BO_LDAC
1 2 3
J8
EXT_LDAC
EXT_LDAC
33R35
LDAC Low Jitter Path Selection
TP 5
LDAC
VCCA
1
DIR
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
10
GND
11
GND
12 GND 13
B8 14
B7 15
B6 16
B5 17
B4 18
B3 19
B2 20
B1 21
OE 22
VCCB 23
VCCB 24
SN74LVC8T245PW
U2
GND
25V
0.1uF
C7
GND
10.0k
R37
GND
VREF_A
1
A1
2
A2
3
A3
4
A4
5
NC 6
GND 7
EN 8
NC 9
B4 10
B3 11
B2 12
B1 13
VREF_B 14
LS F0204DPWR
U1
25V
0.1uF
C3
GND
VIO
BO_SCL_USBBTC_RSTSEL_LDAC
3V3
25V
0.1uF
C5
GND
33R20
33R19
33R18
MISO_LDAC_RSTS EL
SCL_USBBTC_RSTSEL_LDAC
SDA_CLR_RSTSEL_LDAC
GND
10.0k
R23
10.0k
R3
10.0k
R2
10.0k
R1
3V3
GND
VIO
DAC_VIO
TP 4DAC_VIO
10.0k
R24
10.0k
R22
3V3 3V3
DAC_VIO
33R21
33R17
1
2
3
J10
1
2
3
J9 0R15
0R14
SCL_USBBTC_RSTSEL_LDAC
SDA_CLR_RSTSEL_LDAC
BO_SCL_USBBTC_RSTSEL_LDAC
BO_SDA_CLR_RS TS EL_LDAC
10.0kR29
SPI_BUF_ENSPI_BUF_EN
1 2
J11
BO_SCL_USBBTC_RSTSEL_LDAC
BO_SDA_CLR_RS TS EL_LDAC
10uF
10V
C1
10uF
10V
C2
1
3
5 6
4
2
7
9 10
8
1211
1413
1615
1817
2019
J14
1
3
5 6
4
2
7
9 10
8
1211
1413
1615
1817
2019
J13
ESQ-110-14-T-D
By default, DAC_VIO is OFF. However, the VIO is
ON to make sure EEPROM is read. The VIO is by
default connected to 3V3 and then based on the
EEPROM reading, it is switch to the right value.
This assumes that the BO board has another buffer
to isolate the EEPROM signals from the DAC
unless DAC_VIO is present
EXT_VDD-max = 5.5V
EXT_VIO-max = 3.6V
VCC-max = 43V
VSS-max = -21.5V
(VCC-VSS)-max = 43V
This jumper provides a clean
option to supply low-jitter
LDAC for high-THD
applications. When external
LDAC is not going through
level translator, VIO must be at
3V3
This circuit is mainly intended to
check whether VDD and VIO
are in the recommended range or
not.
For MSP430G2, the position of
MOSI and MISO are
interchanged. Hence, the resistor
options are provided
The EXT_LDAC is supplied to
the uC for SPI or I2C trigger. It
is also supplied to the DAC.
When EXT_LDAC is not
present, a timer is used to
generate a synchronous LDAC
Figure 4-1. BOOSTXL-DAC-PORT Schematic Page 1
www.ti.com Schematic, PCB Layout, and Bill of Materials
SLAU859 – JULY 2021
Submit Document Feedback
AFE539A4EVM 19
Copyright © 2021 Texas Instruments Incorporated

VDD
GND
BO_AIO0
BO_AIO2
VCC
VS S
REFGND
REF
BO_AIO1 DAC_VIO
BO_MISO _LDAC_RS TSEL
BO_SCLK_A0 BO_MO S I_CLR
BO_CS 0_A1
BO_SP I2C_US BBTC_RS T
BO_SCL_USBBTC_RSTSEL_LDAC BO_S DA_CLR_RS TS EL_LDAC
5
4
1
2
3
6
7
8
9
10
11
12
13
14
15
16
J2
5
4
1
2
3
6
7
8
9
10
11
12
13
14
15
16
J1
BO_LDAC
VIO
BO_AIO0 BO_AIO1
BO_AIO2 BO_AIO3
BO_AIO8
BO_AIO4 BO_AIO5
BO_AIO6 BO_AIO7
BO_AIO9
BO_AIO10
BO_AIO12
BO_AIO11
BO_AIO13
BO_AIO3
BO_AIO4
BO_AIO6
BO_AIO8
BO_AIO10
BO_AIO12
BO_AIO14
BO_AIO5
BO_AIO7
BO_AIO9
BO_AIO11
BO_AIO13
BO_AIO15
BO_AIO14 BO_AIO15
VCC VS S
VDD VIO
EXT_REF
REFGND
GND AGND
NT2 Net-Tie
NT4 Net-Tie
NT6 Net-Tie
NT8 Net-Tie
NT1 Net-Tie
NT3 Net-Tie
NT5 Net-Tie
NT7 Net-Tie
AGND
GND GND
DAC Breakout Interface
DAC Function Extender
12
NC 3
LM4040DIM3X-2.5/NOPB
U4
12
NC 3
LM4040DIM3-5.0/NOP B
U3
1.0k
R36
1.0k
R33
GND
GND
5V
EXT_VDD
25V
0.1uF
C10
25V
0.1uF
C9
2V5_VREF
5V0_VREF
1.0k
R30
GND
25V
0.1uF
C8
GND
VDD
L1
742792651
0R31
1
2
3
J3
EXT_REF REF TP2REF
L2
742792651
L3
742792651
25V
0.1uF
C4
REFGND
Reference Voltage Selection
5
4
1
2
3
6
7
8
9
10
11
12
13
14
15
16
J5
5
4
1
2
3
6
7
8
9
10
11
12
13
14
15
16
J4
REFGND GND
0R16
0R46
0R47
DAC_VIO
0R34
1
2
3
J7
1
2
3
J6
AGND
REFGND must be shorted to
GND on the Breakout Board
This pinout has been chosen to
match that of ADC BoosterPack
designs
VDD can either be used directly
or through an optional voltage
divider
This option is provided in case a
10-pin BO board is needed. The
resistor will be DNP by default.
Only 16-pin and
32-pin DAC BO
boards are
supported. Other
configurations can
be used but with
custom
modifications
This interface is only on TOP
side for the DAC launch
Vehicle. For function externder
board, this needs to be on both
sides similar to LP connectors
Figure 4-2. BOOSTXL-DAC-PORT Schematic Page 2
Schematic, PCB Layout, and Bill of Materials www.ti.com
20 AFE539A4EVM SLAU859 – JULY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated