ANALOG DEVICES AD74413R-DIOZ Quad-Channel Software User Guide
- June 12, 2024
- Analog Devices
Table of Contents
AD74413R-DIOZ Quad-Channel Software
User Guide User Guide | EVAL-AD74413R-DIOZ
UG-2124
Evaluating the AD74413R-DIOZ Quad-Channel
Software Configurable Input and Output
FEATURES
► Quad-channel, software configurable input and output functionality for the
AD74413R and the MAX14906
► Single, 24 V external supply
► On-board MAX14483, 6-channel, low power, 3.75 kV RMS SPI digital isolator
► On-board MAX17552, 60 V, 100 mA, ultras mall, high-efficiency, synchronous
step-down DC-to-DC converter
► Windows GUI for control
EVALUATION BOARD KIT CONTENTS
► EVAL-AD74413R-DIOZ evaluation board
EQUIPMENT NEEDED
► USB2PMB2 adapter board
► Benchtop power supply and connector cables
► PC running Windows 10 or later
DOCUMENTS NEEDED
► AD74413R data sheet
► MAX14906 data sheet
SOFTWARE NEEDED
► AD74413R-DIOZ demo GUI
► .NET Framework 4.8 runtime
► FTDI D2XX direct drivers
GENERAL DESCRIPTION
The EVAL-AD74413R-DIOZ (see Figure 1) is an evaluation board used to
demonstrate and evaluate the full software configurable input and output
(SWIO) features that the AD74413R and the MAX14906 provide when working
together. The board has functionality for digital input, digital output,
analog input, and analog output. The EVAL-AD74413R-DIOZ is controlled with a
USB2PMB2 adapter board.
The USB2PMB2 board controls the EVAL-AD74413R-DIOZ board via the USB port of a
PC using the AD74413R-DIOZ demo software.
The EVAL-AD74413R-DIOZ requires an analog power (AVDD) operating supply of 14
V to 28.8 V. The USB2PMB2 board is supplied from the PC. See the AD74413R data
sheet for more information about the AD74413R, and see the MAX14906 data
sheet for more information about the MAX14906. Users must consult both data
sheets in conjunction with this user guide when using the EVAL-AD74413RDIOZ.
EVALUATION BOARD HARDWARE
POWER SUPPLY
The EVAL-AD74413R-DIOZ comes with a single power supply connector (P6) that
directly powers the AVDD pin of the AD74413R and the VDD and VDDx pins of the
MAX14906.
The EVAL-AD74413R-DIOZ supply powers an on-board DC-to-DC converter
(MAX17552, (U4)) that generates a 5 V supply. This 5 V supplies the DVCC
and IOVDD pins of the AD74413R as well as the VL and the V5V pins of the
MAX14906.
Figure 2 shows a simplified drawing of the power connections on the EVAL-
AD74413R-DIOZ.
OUTPUT CHANNELS
The AD74413R and the MAX14906 have four channels each (see the AD74413R and
MAX14906 data sheets for more information). Each of the channels in the
AD74413R is connected to the respective channel of the MAX14906. For example,
Channel A of the AD74413R is connected to Channel 1 of the MAX14906 and so on.
There are four terminal connectors on the EVAL-AD74413R-DIOZ, P1, P2, P3, and
P4, that connect the desired loads to the four output channels.
SERIAL PERIPHERAL INTERFACE (SPI) COMMUNICATION
The USB2PMB2 handles the communication to the EVALAD74413R-DIOZ board via the
PC. The USB2PMB2 board also transmits an OR combination of the ALERT signal of
the AD74413R and the FAULT signal of the MAX14906 to the PC so the graphical
user interface (GUI) can monitor any of the interrupts and diagnostics that
the AD74413R and the MAX14906 provide.
TEST POINTS
The EVAL-AD74413R-DIOZ has test points for the SPI signals, the alert signal,
to measure the AVDD, AVSS, and AGND rails, and to provide debug access to the
4-channel screw terminals.
SOFTWARE PREREQUISITES
Before connecting the USB2PMB2 board to the PC, the following two
prerequisites must be met for correct evaluation kit behavior.
FTDI D2XX Direct Drivers
The USB2PMB2 board depends on the FTDI D2XX direct drivers to communicate
correctly with Windows® . Before connecting the USB2PMB2 board to the PC or
installing the AD74413R_DIOZ software, install the FTDI D2XX direct drivers.
These drivers can be downloaded from the FTDI website.
.NET Framework 4.8 Runtime
The AD74413R-DIOZ software GUI uses several .NET library components. Before
installing the AD74413R-DIOZ software, confirm that your system has the .NET
Framework 4.8 runtime installed.
The .NET Framework 4.8 runtime can be downloaded directly from the Microsoft
website.
The .NET Framework 4.8 developer pack is not required to run the AD74413R-DIOZ
software.
INSTALLING THE AD74413R-DIOZ SOFTWARE
Download the evaluation software from the EVAL-AD74413R-DIOZ web page. Run the
AD74413R_DIOZ_setup.exe file. Once the installation is complete, restart the
PC before opening the software.
GETTING STARTED
After all prerequisites are met and the AD74413R-DIOZ software is installed, the EVAL-AD74413R-DIOZ needs to be connected to both the PC and to the power supply by completing the following:
- Connect the EVAL-AD74413R-DIOZ board to the USB2PMB2 board via the PMOD connector (P5).
- Using a USB cable, connect the USB2PMB2 board to the PC.
- Connect a 24 V power supply to the 24 V power supply connector (P6).
COMMUNICATING WITH THE EVAL-AD74413RDIOZ
Once the EVAL-AD74413R-DIOZ board has been connected to the PC and to a 24 V
power supply, open the AD74413R-DIOZ software. The software checks
automatically that the USB2PMB2 board is connected correctly and
communicating with the software.
If a USB2PMB2 board is not detected by the software, a splash screen shows a
warning message (see Figure 3).
If communication to the USB2PMB2 board is lost while using the EVAL-AD74413R-
DIOZ board and the AD74413R-DIOZ software, the message in the status bar at
the bottom of the application window changes from Connected to Kit Not Found
and Not Connected. Communication to the USB2PMB2 board is restored by
selecting Search for USB Device from the Device menu.
This action reestablishes the USB communication between the PC and the
USB2PMB2 board, and the four channels of the EVAL-AD74413R-DIOZ board are
reset to a high impedance state.
If communication with the EVAL-AD74413R-DIOZ is lost because of an incorrect
supply, the Board not ready indicator in the GUI turns red. After the supply
returns to a correct value, the Board not ready indicator turns gray, and the
GUI configures the four channels of the EVAL-AD74413R-DIOZ as high impedance.
Loss of Communication Between EVALAD74413R-DIOZ and USB2PMB2
The AD74413R-DIOZ software detects when the board is not ready due to the loss
of communication between the PC and the USB2PMB2 board or due to an incorrect
voltage supply to the EVAL-AD74413R-DIOZ only. It does not detect if the
EVALAD74413R-DIOZ is disconnected from the USB2PMB2 board.
If the EVAL-AD74413R-DIOZ board is disconnected from the USB2PMB2 board and
the user wants to connect a new EVALAD74413R-DIOZ board, click Reset SWIO in
the Device menu (see Figure 4). This resets the GUI and configures the
EVALAD74413R-DIOZ to a known high impedance state.
USING THE SOFTWARE
Configuration Tab
The AD74413R_DIOZ software opens to the Configuration tab (see Figure
5).
The Configuration tab contains the following elements:
► Top level overview of the EVAL-AD74413R-DIOZ configuration
► MAX14906 interrupts
► AD74413R interrupts
► Board not ready indicator
► Configure button
Top Level Overview
This section of the configuration tab shows the four different channels of the
EVAL-AD74413R-DIOZ and what configuration will be applied to the board when
the Configure button is clicked.
Select the desired mode (high impedance low-leakage mode, digital input,
digital output, analog input, or analog output) from the dropdown menu in the
first column for the respective board channel (see Figure 6).
Digital Input Mode
When a channel is configured as a digital input, a second dropdown menu and a
text box appear (see Figure 7).
The second dropdown menu allows for the channel to be configured as either IEC
Type 1, 3 or as IEC Type 2. After the Configure button is clicked, the text
box on the right displays High or Low depending on the board signal input.
Digital Output Mode
When a channel is configured as a digital output, three dropdown menus appear
on the right of the DO Mode dropdown menu (Figure 8).
The second dropdown menu allows the channel to be configured as:
► High-side
► High-side 2x Inrush current
► Active Clamp Push-Pull
► Simple Push-Pull
The third dropdown menu allows configuration of the output of the channel as
on or off when working in high-side mode of operation or high or low when
working in push-pull mode.
The fourth dropdown menu sets the output current limit.
Analog Input Mode
When a channel is configured as an analog input, another dropdown menu and a
text box appear (see Figure 9).
The second dropdown menu allows the user to select one of the following analog
input modes:
► Voltage Input
► Current Input—Externally powered
► Current Input—Loop powered
After the Configure button is clicked, the value corresponding to the
signal input into the board appears in the text box.
Analog Output Mode
When a channel is configured as an analog output, an additional dropdown menu
and a numeric box appear (Figure 10).
The second dropdown allows users to select between Voltage Output mode and
Current Output mode.
The numeric box is used to select the desired current or voltage output value
for the channel.
MAX14906 Interrupts
The EVAL-AD74413R-DIOZ has all of the interrupt sources from the MAX14906
unmasked. If any of the MAX14906 interrupts are signaled, the corresponding
interrupt flag in the AD74413R-DIOZ GUI turns red (Figure 11).
For more information about the particular interrupt source, please consult the
MAX14906 data sheet.
The Clear button clears all of the interrupts signaled in the MAX14906 (if
the fault conditions that generated the interrupts are resolved).
AD74413R Interrupts
All of the interrupt sources of the AD74413R are unmasked in the EVAL-
AD74413R-DIOZ board. When an interrupt is signaled, the corresponding flag in
the AD74413R-DIOZ GUI turns red (see Figure 12).
For more information about the different interrupts, please consult the
AD74413R data sheet.
The Clear button clears all of the interrupts signaled in the AD74413R (if the
fault conditions that generated the interrupts are resolved).
Board Not Ready Indicator
When the supply to the EVAL-AD74413R-DIOZ is not correct, the Board not ready
indicator is flagged in red. Once the supply returns to the correct level, the
indicator turns back to gray, and all of the channels are reset to a high
impedance status.
Configure Button
Click the Configure button for the AD74413R-DIOZ GUI to configure the
EVAL-AD74413R-DIOZ board channels as chosen in the Configuration tab.
The EVAL-AD74413R-DIOZ board is only configured by clicking the Configure
button and not by making selections from the dropdown menus.
MAX14906 Diagnostics Tab
Several of the MAX14906 interrupts have different sources that can trigger
them. When a MAX14906 interrupt is flagged in the Configuration tab, the
MAX14906 Diagnostics tab provides further details about which of the different
sources in the MAX14906 triggered the interrupt.
When the interrupts are cleared by clicking the Clear button in the
Configuration tab, the MAX14906 Diagnostics tab is updated automatically.
For more information about the different interrupt sources, please consult the
MAX14906 data sheet.
Block Diagram Tab
The Block Diagram tab detects what configuration is selected for the
respective channel in the Configuration tab and displays a simplified block
diagram of the system that shows how the devices on the board work in the
selected configuration.
BILL OF MATERIALS
ORDERING INFORMATION
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit
boards can discharge without detection. Although this product features
patented or proprietary protection circuitry, damage may occur on devices
subjected to high energy ESD. Therefore, proper ESD precautions should be
taken to avoid performance degradation or loss of functionality.
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References
- Mixed-signal and digital signal processing ICs | Analog Devices
- AD74413R Datasheet and Product Info | Analog Devices
- MAX14483 Datasheet and Product Info | Analog Devices
- MAX14906 Datasheet and Product Info | Analog Devices
- MAX17552 Datasheet and Product Info | Analog Devices
- USB2PMB2 Evaluation Board | Analog Devices