EVAL-AD7616SDZ/EVAL-AD7616-PSDZ User Guide
UG-1012
One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Evaluating the AD7616/AD7616-P 16-Channel DAS with 16-Bit, Bipolar Input, Dual
Simultaneous Sampling ADC
FEATURES
GENERAL DESCRIPTION
Full featured evaluation board for the AD7616 and AD7616-P
On-board power supplies
Standalone capability
SDP-B controller board-compatible
PC software for control and data analysis
The EVAL-AD7616SDZ/EVAL-AD7616-PSDZ is a single, full
featured evaluation board designed to easily evaluate all features
of both the AD7616 and AD7616-P analog-to-digital converters
(ADCs). The evaluation board can be controlled by the EVALSDP-CB1Z via the 120-way high speed system demonstration platform (SDP-B) connector (J10). The EVAL-SDP-CB1Z SDP-B
board controls the evaluation board through a USB port of a PC
using the evaluation board software, which is available for
download from the AD7616 and AD7616-P product pages.
EVALUATION KIT CONTENTS
EVAL-AD7616SDZ/EVAL-AD7616-PSDZ evaluation board
DC power supply
ADDITIONAL EQUIPMENT NEEDED
Complete specifications for the AD7616 and AD7616-P devices
are provided in the AD7616 and AD7616-P data sheets and should
be consulted in conjunction with this user guide when using the
evaluation boards. Full details on the EVAL-SDP-CB1Z are
available on the SDP-B product page.
EVAL-SDP-CB1Z; includes a USB cable
Signal source
PC running Windows XP SP3, Windows Vista, or Windows 7
with a USB 2.0 port
Table 1. EVAL-AD7616SDZ/EVAL-AD7616-PSDZ
On-Board Components
ONLINE RESOURCES
AD7616 and AD7616-P data sheets
EVAL-AD7616SDZ/EVAL-AD7616-PSDZ user guide
AD7616 evaluation software
Component
ADP7118
ADP7104ARDZ-5.0
ADR421
Description
Low noise, low dropout regulator (LDO)
5 V low noise LDO
Ultraprecision, low noise, 2.5 V XFET®
voltage reference
TYPICAL SETUP OF THE EVAL-AD7616SDZ/EVAL-AD7616-PSDZ
WALL OUTLET
100V AC TO 240V AC
47Hz TO 63Hz
SWITCHING
POWER
SUPPLY
SIGNAL GENERATOR
ANALOG FILTER
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PC RUNNING EVALUALTION
BOARD SOFTWARE
Figure 1. Typical Setup of the EVAL-AD7616SDZ/EVAL-AD7616-PSDZ (Left) and the EVAL-SDP-CB1Z (Right)
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. B | Page 1 of 18
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EVAL-AD7616SDZ/EVAL-AD7616-PSDZ User Guide
TABLE OF CONTENTS
Features .............................................................................................. 1
Sockets/Connectors ......................................................................6
Evaluation Kit Contents ................................................................... 1
Test Points ......................................................................................6
Additional Equipment Needed ....................................................... 1
Evaluation Board Software ...............................................................7
Online Resources .............................................................................. 1
Software Installation Procedures.................................................7
General Description ......................................................................... 1
Evaluation Board Setup Procedures ...........................................9
Typical Setup of the EVAL-AD7616SDZ/EVAL-AD7616-PSDZ1
AD7616 Evaluation Software Operation ..................................... 10
Revision History ............................................................................... 2
Launching the Software ............................................................. 10
Quick Start Guide ............................................................................. 3
Setting Up the System for Data Capture ................................. 10
Evaluation Board Hardware ............................................................ 4
Description of Main Window ................................................... 10
AD7616/AD7616-P Description ................................................. 4
Waveform Analysis .................................................................... 13
Power Supplies .............................................................................. 4
Analysis Tab ................................................................................ 15
Input Signals .................................................................................. 4
Register Map Tab ........................................................................ 17
Link Configuration Options ....................................................... 5
Exiting the Software ................................................................... 17
Evaluation Board Circuitry ............................................................. 6
REVISION HISTORY
11/2018—Rev. A to Rev. B
Changes to Table 2 ............................................................................ 4
Changes to Table 3 ............................................................................ 5
6/2017—Rev. 0 to Rev. A
Added AD7616-P and EVAL-AD7616-PSDZ ........... Throughout
Changes to AD7616 Description Section ...................................... 4
Changes to Setup Conditions Section............................................ 5
Changes to Table 3 ............................................................................ 5
10/2016—Revision 0: Initial Version
Rev. B | Page 2 of 18
EVAL-AD7616SDZ/EVAL-AD7616-PSDZ User Guide
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QUICK START GUIDE
2.
3.
4.
5.
Download and install the AD7616 evaluation software,
available on the AD7616 and AD7616-P product pages; note
that the AD7616 software is used for both devices.
Ensure the EVAL-SDP-CB1Z board is disconnected from
the USB port of the PC during software installation. The
PC may need to be restarted after the installation.
Ensure the various link options are configured as outlined
in Table 3.
Connect the EVAL-SDP-CB1Z board to the evaluation
board, shown in Figure 2.
Connect the EVAL-SDP-CB1Z board to the PC via the
USB cable.
6.
7.
8.
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1.
For Windows® XP, search for the EVAL-SDP-CB1Z
drivers.
b. Choose to automatically search for the drivers for the
EVAL-SDP-CB1Z board if prompted by the operating
system.
Power up the EVAL-AD7616SDZ/EVAL-AD7616-PSDZ
evaluation board by inserting the 7 V to 9 V dc barrel jack,
included in the evaluation kit, into the 7 V to 9 V barrel
connector, labeled J7.
Launch the AD7616 evaluation software from the Analog
Devices subfolder in the All Programs menu.
Connect an input signal via the V0A connector.
a.
Follow these steps to evaluate the AD7616 and AD7616-P ADC:
Figure 2. EVAL-AD7616SDZ/EVAL-AD7616-PSDZ Evaluation Board (Left) Connected to the EVAL-SDP-CB1Z Board (Right)
Rev. B | Page 3 of 18
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EVAL-AD7616SDZ/EVAL-AD7616-PSDZ User Guide
EVALUATION BOARD HARDWARE
The AD7616/AD7616-P is ideally suited to applications such as
power-line monitoring, multiphase motor control, instrumentation
and control systems, and data acquisition systems (DAS).
AD7616/AD7616-P DESCRIPTION
This user guide describes the evaluation board for the AD7616/
AD7616-P dual, simultaneous sampling ADCs. The AD7616/
AD7616-P are 16-channel, 16-bit, bipolar input ADCs with
independently selectable channel input ranges. The AD7616/
AD7616-P operates from a single 5 V analog power supply with
a 2.3 V to 3.6 V VDRIVE. The device features analog input clamp
protection, a high impedance analog input, a first-order
antialiasing filter, and an on-chip accurate reference.
POWER SUPPLIES
Take care before applying power and signals to the EVALAD7616SDZ/EVAL-AD7616-PSDZ evaluation board to ensure
that all link positions are set according to the required operating
mode. See Table 3 for the complete list of link options.
The EVAL-AD7616SDZ/EVAL-AD7616-PSDZ evaluation board
is supplied by an included 7 V to 9 V power supply; alternatively,
separate VDRIVE and VCC supplies can be supplied to the AD7616
(or AD7616-P) via the J8 and J9 connectors, respectively.
The AD7616/AD7616-P can achieve throughput rates up to 1
MSPS per channel pair with 90.5 dB signal-to-noise ratio (SNR).
The AD7616/AD7616-P features oversampling capability with a
digital filter that can achieve 92 dB SNR for an oversampling
ratio of 2. The device also features a flexible channel sequencer
with burst mode.
INPUT SIGNALS
The analog input range to the AD7616/AD7616-P is independently selectable with an absolute maximum input voltage
range of ±16.5 V, which must not be exceeded. An input signal in
the range of ±2.5 V, ±5 V, or ±10 V must be connected to the
evaluation board via any of the analog input connecters.
The AD7616 has a flexible parallel/serial interface that is SPI-/
QSPI-/MICROWIRE™-/DSP-compatible whereas the AD7616-P
has a parallel interface only. It also features optional cyclical redundancy check (CRC). The AD7616/AD7616-P comes in an 80-lead
LQFP package.
Table 2. Optional External Power Supplies
Connector
J9
J8
Voltage Range
5 V ± 10%
2.3 V to 3.6 V
Description
Analog supply rail
Digital supply rail without EVAL-SDP-CB1Z connected
+
ON-BOARD
POWER SUPPLIES
ADP7118
5V AVDD
VCC
GND
–
ADP7104
SDP 5V
PWR
GOOD
VIN
7V TO 9V
DC
INPUT
JACK
ADP7118
3.3V VDRIVE
VDRIVE
5V
GND
BIPOLAR
INPUT SIGNALS
×8
VCC
BF527
DSP
REFSEL VDRIVE
V0A....V7A
PARALLEL
INTERFACE
PARALLEL
INTERFACE
AD7616
BIPOLAR
INPUT SIGNALS
×8
CONTROL INPUTS
CONTROL INPUTS
V0B....V7B
RESET
REFINOUT
GND
EVAL-SDP-CB1Z
CONTROLLER
BOARD
ADR421
2.5V REF
Figure 3. EVAL-AD7616SDZ/EVAL-AD7616-PSDZ Functional Block Diagram
Rev. B | Page 4 of 18
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Power Supply
VCC
VDRIVE
EVAL-AD7616SDZ/EVAL-AD7616-PSDZ User Guide
LINK CONFIGURATION OPTIONS
There are multiple link options that must be set correctly to
select the appropriate operating setup before using the EVALAD7616SDZ/EVAL-AD7616-PSDZ. The functions of these
options are outlined in Table 3.
Setup Conditions
Take care before applying power and signals to the EVALAD7616SDZ/EVAL-AD7616-PSDZ to ensure that all link
positions are set as required by the selected operating mode.
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There are two modes to operate the EVAL-AD7616SDZ/EVALAD7616-PSDZ evaluation board. SDP-B controlled mode used
with the EVAL-SDP-CB1Z board or standalone mode.
Table 3 shows the default positions of the links when the EVALAD7616SDZ/EVAL-AD7616-PSDZ is packaged. It is set up to
operate in conjunction with the SDP-B via the parallel interface
with the power supplied from the VIN 7 V to 9 V barrel
connector, J7.
Table 3. Link Options
Link
LK38
Default
Position
B
LK39
Inserted
LK40
A
LK41
A
LK1 to
LK16
Inserted
LK17 to
LK32
Removed
Channel Selection
LK33 to
LK35
C
Hardware/
Software Mode
Range Select
LK36 to
LK37
C
Category
Power Supplies
Analog Input
Function
This link selects the reference source for the AD7616/AD7616-P.
Position A—internal reference selected.
Position B—external reference selected.
When LK39 is inserted, REFINOUT is connected to the ADR421 external reference.
When LK39 is removed, REFINOUT is disconnected from the ADR421 and an external
reference can be supplied via the SMA connector, J6.
This link selects the VCC supply source for the AD7616/AD7616-P.
Position A—VCC supply is derived from the VIN 7 V to 9 V connector, J7.
Position B—VCC supply is sourced from the terminal connector, J9.
This link selects the VDRIVE supply source for the AD7616/AD7616-P.
Position A—VDRIVE supply is derived from the VIN 7 V to 9 V connector, J7.
Position B—VDRIVE supply is sourced from the terminal connector, J8.
When these links are inserted, the VxxGND pin for each channel is connected to the
board ground. Remove these links if the VxxGND pin for a channel is to be sensed
from the signal source.
When these links are inserted, the analog inputs are connected to the respective VxxGND
through a 270 Ω resistor. Remove the respective link if an analog input is applied to a
channel.
In Hardware Mode, these links select the input channels for next conversion for the
ADC A channels and the ADC B channels. In software mode, these pins must connect
to AGND, Position C.
Position A—The CHSELx pins are controlled via the SDP interface.
Position B—CHSELx pins are connected to VDRIVE.
Position C—CHSELx pins are connected to AGND.
These pins are dual-purpose. With the HW_RNGSELx pins tied to ground, the
AD7616/AD7616-P operates in Software mode. In hardware mode, these links select
the analog input range. Refer to the AD7616/AD7616-P data sheet for detailed range
selection instructions.
Position A—The HW_RNGSELx pins are controlled via the SDP interface.
Position B—HW_RNGSELx pins are connected to VDRIVE.
Position C—HW_RNGSELx pins are connected to AGND.
Rev. B | Page 5 of 18
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EVAL-AD7616SDZ/EVAL-AD7616-PSDZ User Guide
EVALUATION BOARD CIRCUITRY
SOCKETS/CONNECTORS
TEST POINTS
The connectors and sockets on the EVAL-AD7616SDZ/EVALAD7616-PSDZ are described in Table 4.
There are several test points and SIL headers on the EVALAD7616SDZ/EVAL-AD7616-PSDZ. These test points provide
easy access to the signals from the evaluation board for probing,
evaluation, and debugging.
The default interface to this evaluation board is via the 120-way
connector, which connects the EVAL-AD7616SDZ/EVALAD7616-PSDZ to the EVAL-SDP-CB1Z. If using the EVALAD7616SDZ/EVAL-AD7616-PSDZ evaluation board in
standalone mode, communication is achieved via the J5 singleinline (SIL) header pins.
Table 4. On-Board Connectors
Connector
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
Function
Analog inputs (V0A to V3A)
Analog inputs (V4A to V7A)
Analog inputs (V0A to V3B)
Analog inputs (V4B to V7B)
Digital input/output pins for debug/standalone mode
External reference SMA input
External power connector, 7 V to 9 V dc input
External VDRIVE power connector
External VCC power connector
120-way connector for the EVAL-SDP-CB1Z
Rev. B | Page 6 of 18
EVAL-AD7616SDZ/EVAL-AD7616-PSDZ User Guide
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EVALUATION BOARD SOFTWARE
SOFTWARE INSTALLATION PROCEDURES
4.
Select the location to install the software and click Next.
Download the AD7616/AD7616-P evaluation software from the
AD7616 or the ADP7616-P evaluation board product page to
install on a PC before using the EVAL-AD7616SDZ/EVALAD7616-PSDZ evaluation board.
There are two steps to the installation process:
•
•
AD7616/AD7616-P evaluation software installation
EVAL-SDP-CB1Z driver installation
Warning
14723-004
The evaluation board software and drivers must be installed
before connecting the EVAL-AD7616SDZ/EVAL-AD7616-PSDZ
and EVAL-SDP-CB1Z to the USB port of the PC to ensure the
evaluation system is correctly recognized when it is connected
to the PC.
Figure 5. Evaluation Software Installation—Destination Directory Dialog Box
Installing the AD7616/AD7616-P Evaluation Board
Software
5.
To install the AD7616/AD7616-P evaluation board software,
1.
2.
Download the AD7616/AD7616-P evaluation software to a
Windows-based PC and unzip the file.
Double-click the setup.exe file to begin the installation. By
default, the software is saved to the following location:
C:\Program Files\Analog Devices\AD7616\.
A dialog box appears asking for permission to allow the
program to make changes to the PC. Click Yes to begin the
installation process.
14723-005
3.
A license agreement appears. Read the agreement, select I
accept the License Agreement, and click Next.
Figure 6. Evaluation Software Installation—Accepting the License Agreement
14723-003
6.
A summary of the installation displays. Click Next to
continue.
14723-006
Figure 4. Evaluation Software Installation—User Account Control Dialog Box
Figure 7. Evaluation Software Installation—Start Installation Dialog Box
Rev. B | Page 7 of 18
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The Installation Complete dialog box informs the user
when the evaluation software installation is complete. Click
Next to proceed with the installation of the drivers.
2.
Select a location to install the drivers and click Install.
14723-007
14723-009
7.
EVAL-AD7616SDZ/EVAL-AD7616-PSDZ User Guide
Figure 8. Evaluation Software Installation—Installation Complete Dialog Box
Figure 10. EVAL-SDP-CB1Z Drivers Installation—Choose Install Location
Dialog Box
3.
Click Install to proceed with the installation.
Installing the EVAL-SDP-CB1Z SDP Board Drivers
After the installation of theAD7616/AD7616-P evaluation board
software completes, the ADI SDP Drivers Setup wizard window
opens for the installation of the EVAL-SDP-CB1Z SDP board
drivers. To install the drivers, continue with the following
process:
14723-010
Ensure all other applications are closed and click Next to
begin the driver installation process.
Figure 11. EVAL-SDP-CB1Z Drivers Installation—Windows Security Dialog Box
4.
To complete the drivers installation, click Finish, which
closes the installation wizard.
14723-008
Figure 9. EVAL-SDP-CB1Z Drivers Installation—Setup Wizard
14723-011
1.
Figure 12. EVAL-SDP-CB1Z Drivers Installation—Completing the Installation
Rev. B | Page 8 of 18
EVAL-AD7616SDZ/EVAL-AD7616-PSDZ User Guide
EVALUATION BOARD SETUP PROCEDURES
Verifying the Board Connection
The EVAL-AD7616SDZ/EVAL-AD7616-PSDZ evaluation board
connects to the EVAL-SDP-CB1Z. The EVAL-SDP-CB1Z is the
controller board, which is the communication link between the PC
and the EVAL-AD7616SDZ/EVAL-AD7616-PSDZ. Figure 2
shows a photograph of the connections between the EVALAD7616SDZ/EVAL-AD7616-PSDZ evaluation board and the
EVAL-SDP-CB1Z.
1.
After following the instructions in the Software Installation
Procedures section, set up the EVAL-AD7616SDZ/EVALAD7616-PSDZ and EVAL-SDP-CB1Z as detailed in this
section.
Allow the Found New Hardware Wizard to run after the
EVAL-SDP-CB1Z board is plugged into the PC.
a. If using Windows XP, search for the EVAL-SDP-CB1Z
drivers.
b. Choose to automatically search for the drivers for the
EVAL-SDP-CB1Z board if prompted by the operating
system.
Check that the evaluation board is connected to the PC
correctly using the Device Manager of the PC by rightclicking My Computer and then Manage.
a. A dialog box appears asking for permission to allow
the program to make changes to the computer. Click
Yes.
b. The Computer Management window appears. From
the list of System Tools, click Device Manager.
Under ADI Development Tools, Analog Devices System
Demonstration Platform SDP-B appears (see Figure 13),
indicating the EVAL-SDP-CB1Z driver software is installed
and the board is connected to the PC correctly.
2.
Warning
The evaluation software and drivers must be installed before connecting the evaluation board and EVAL-SDP-CB1Z to the USB
port of the PC to ensure that the evaluation system is correctly
recognized when it is connected to the PC.
3.
Connecting the EVAL-AD7616SDZ/EVAL-AD7616-PSDZ
and EVAL-SDP-CB1Z to a PC
2.
3.
4.
Ensure all configuration links are in the appropriate
positions (see Table 2).
Connect the EVAL-AD7616SDZ/EVAL-AD7616-PSDZ
board securely to the CON A J2 120-way connector on the
EVAL-SDP-CB1Z.
The EVAL-AD7616SDZ/EVAL-AD7616-PSDZ board
requires an external power supply adapter, which is included
in the EVAL-AD7616SDZ/EVAL-AD7616-PSDZ kit.
Connect this power supply to the dc barrel connector, J7, on
the EVAL-AD7616SDZ/EVAL-AD7616-PSDZ board.
Connect the EVAL-SDP-CB1Z board to the PC via the
USB cable enclosed in the EVAL-SDP-CB1Z kit.
14723-012
1.
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Figure 13. Device Manager Window— Checking the EVAL-SDP-CB1Z Is
Connected to the PC Correctly
Disconnecting the EVAL-AD7616SDZ/EVAL-AD7616PSDZ Evaluation Board
Always remove power from the EVAL-SDP-CB1Z or click the
reset tact switch (located alongside the mini USB port) before
removing the EVAL-AD7616SDZ/EVAL-AD7616-PSDZ
evaluation board.
Rev. B | Page 9 of 18
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EVAL-AD7616SDZ/EVAL-AD7616-PSDZ User Guide
AD7616 EVALUATION SOFTWARE OPERATION
LAUNCHING THE SOFTWARE
Sampling Frequency
After the EVAL-AD7616SDZ/EVAL-AD7616-PSDZ and EVALSDP-CB1Z boards are correctly connected to the PC, the AD7616
evaluation software can launch.
The Sampling Freq field, Label 4 in Figure 21, controls the
throughput rate of the device. The software is capable of
running at a maximum throughput rate of 1 MSPS.
1.
Help
The Help button, Label 5 in Figure 21, launches a short tutorial
on how to use the AD7616 or AD7616-P evaluation software.
Use the tutorial in conjunction with this user guide.
Input Range
The Input Range button, Label 6 in Figure 21, allows for
independent configurations of the input range per channel.
Clicking the Input Range button opens the
VA_INPUT_RANGE window, shown in Figure 15.
14723-014
2.
From the Start menu, select Programs > Analog Devices >
AD7616. The main window of the software then opens
(see Figure 21).
If the EVAL-AD7616SDZ/EVAL-AD7616-PSDZ
evaluation board is not connected to the USB port via the
EVAL-SDP-CB1Z when the software is launched, a
connectivity error displays (see Figure 14). Connect the
EVAL-AD7616SDZ/EVAL-AD7616-PSDZ and EVALSDP-CB1Z to the USB port of the PC and wait a few
seconds, then click Refresh and follow the instructions.
Figure 14. Connectivity Error Alert
SETTING UP THE SYSTEM FOR DATA CAPTURE
1.
2.
14723-115
After completing the steps in the Software Installation Procedures
section and the Evaluation Board Setup Procedures section, set
up the system for data capture as follows:
Select the desired device settings
Click the Sample button to gather data
Figure 15. Input Range Window
DESCRIPTION OF MAIN WINDOW
Multiplexer Configuration
When the software launches, the main software window opens
(see Figure 21) and displays the significant control buttons and
analysis indicators of the AD7616 evaluation board software.
The Multiplexer Configuration button, Label 7 in Figure 21,
allows the user to select the next channel for conversion when
the sequencer is not in use. Clicking the button opens the
INPUT_MUX window, prompting the user to configure the
channel pair on which the conversion performs, shown in
Figure 16.
ADC Reset
The ADC Reset button, Label 1 in Figure 21, performs a
hardware reset to the AD7616 or AD7616-P. This returns the
device to a known-good state and reinitializes all registers to
their default values.
Window Tabs
Label 2 in Figure 21 are the tabs that switch between the Device
Configuration, Waveform, Analysis, and Register Map views.
The Input Range dropdown menu, Label 3 in Figure 21, sets
the analog input range for analysis on the AD7616 or AD7616-P.
The range must match that selected from the Input Range button,
otherwise the analysis result is incorrect.
14723-116
Input Range
Figure 16. Multiplexer Configuration in Manual Mode
Rev. B | Page 10 of 18
EVAL-AD7616SDZ/EVAL-AD7616-PSDZ User Guide
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Oversampling
The Flexible Sequencer button, Label 8 in Figure 21, enables
the sequencer and burst modes on the AD7616 or AD7616-P.
The user can program the 32-layer sequencer stack registers via
the Register Map tab, shown in Figure 25. Any combination of
ADC A/ADC B channel pairs can be configured in the sequencer
stack. It is not possible to configure two ADC A channels or two
ADC B channels in a single layer. Refer to the AD7616 or the
AD7616-P data sheet for a detailed explanation of the sequencer.
Clicking the Flexible Sequencer button opens the SEQUENCER_
ALL window, shown in Figure 17.
The Oversampling button, Label 9 in Figure 21, allows the user
to select the oversampling ratio of the on-board digital filter.
Clicking the button opens the OSR window, shown in Figure 19.
14723-119
Sequencer Control
Figure 19. OSR Window
ADC Configuration
14723-117
The ADC Configuration button, Label 10 in Figure 21, allows
the user to view/control the self detect error flag, the status
register output, and the CRC of the AD7616 or AD7616-P. Refer
to the AD7616 or AD7616-P data sheet for a detailed explanation
of these register items. Clicking the ADC Configuration button
opens the ADC_CONFIG window, shown in Figure 20.
Figure 17. SEQUENCER_ALL Window
14723-120
Additionally, the software continuously monitors the channels
programmed to the sequencer stack for nonperiodic channels
within the sequence. If it detects a sequence with nonperiodic
channels, a warning message appears, alerting the user (see
Figure 18). It is possible to perform fast Fourier transform
(FFT) analysis on periodically sampled data only; if a nonperiodic
sequence is detected, the associated FFT for that channel
disables. The user can still sample and plot the waveform data
for the nonperiodic sequence after acknowledging the warning
message.
14723-118
Figure 20. ADC_CONFIG Window
Figure 18. Nonperiodic Sequence Warning
Rev. B | Page 11 of 18
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EVAL-AD7616SDZ/EVAL-AD7616-PSDZ User Guide
3
2
4
1
5
6
10
9
7
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8
Figure 21. AD7616 Evaluation Software Main Window
Rev. B | Page 12 of 18
EVAL-AD7616SDZ/EVAL-AD7616-PSDZ User Guide
11
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12
13
14
16
15
17
18
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19
Figure 22. Waveform Tab
WAVEFORM ANALYSIS
Sample
Figure 22 illustrates the Waveform tab used for waveform capture.
The Sample button, Label 14 in Figure 22, initiates a single or
continuous acquisition depending on the option selected in the
Batch dropdown menu.
Analysis Channel
The Analysis Ch dropdown menu, Label 11 in Figure 22, selects
a channel on which to perform a waveform analysis. The results
display in the waveform analysis pane, Label 15 in Figure 22,
and in the Analysis tab.
Samples
The Samples dropdown menu, Label 12 in Figure 22, selects the
number of samples to acquire per ADC acquisition.
Batch
The Batch dropdown menu, Label 13 in Figure 22, dictates
whether a single batch of samples is gathered, defined by the
Samples dropdown menu, or whether samples are gathered
continuously until the user manually stops acquisition.
Waveform Graph
The data waveform displayed in the data waveform graph, Label 15
in Figure 22, shows each successive sample of the ADC output.
The user can zoom and pan the waveform using the embedded
waveform tools. The user can change the scales on the axes by
typing values into the x-axis and y-axis.
Channel Selection
The checkboxes listed under Label 16 in Figure 22 allow the user
to choose which channels to display on the data waveform
graph. These controls affect the display of the channels on the
graph only and do not have any effect on the channel settings in
the ADC register map.
Rev. B | Page 13 of 18
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EVAL-AD7616SDZ/EVAL-AD7616-PSDZ User Guide
Display Units and Axis Controls
CRC Value
Label 17 in Figure 22 contains controls to format the waveform
graph. Click the Display Units dropdown menu to select
whether the data graph displays in units of volts or codes. This
affects both the waveform graph and the histogram graph in the
Analysis tab. The axis controls can be switched between
dynamic and fixed.
When CRC is enabled in the Status register, the CRC result is
calculated in the software for the received data and compared
with the CRC result appended to the conversion results. Errors
detected are shown in Label 18 in Figure 22.
When selecting either Y-scale Dynamic or X-scale Dynamic,
the corresponding axis width automatically adjusts to show the
entire range of the ADC results after each batch of samples.
When selecting either Y-scale Fixed or X-scale Fixed, the user
can control the corresponding axis ranges; the ranges do not
adjust after each sample batch.
Waveform Analysis (VA 0)
The Waveform Analysis (VA 0) pane, Label 19 in Figure 22,
displays amplitude, frequency, and noise analysis data for the
selected analysis channel.
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21
22
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Figure 23. Analysis Tab for FFT Analysis
ANALYSIS TAB
Figure 23 shows the Analysis tab displaying FFT and histogram
information for the last batch of samples gathered.
FFT/Histogram Selection
The FFT/Histogram Selection spin box, Label 20 in Figure 23,
allows the user to display FFT or histogram analysis in the
Analysis tab.
The waveform graph and FFT Analysis (VA 0) data (Label 21
and Label 22, respectively) change display according to the
option selected in the FFT/Histogram Selection spin box.
Harmonic Content
The Show Harmonic Content button, Label 23 in Figure 23,
displays the harmonic content of the sampled signal when
viewing the FFT analysis.
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25
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Figure 24. Analysis Tab for Histogram
Histogram Graph
Histogram Analysis
The histogram graph is displayed in Label 25, Figure 24. This
graph displays the number of hits per code within the sampled
data. Useful for dc analysis, the histogram indicates noise
performance of the device.
The Histogram Analysis pane, Label 26 in Figure 24, changes
display according to the option selected in the FFT/Histogram
Selection spin box. It provides information related to the dc
performance of the AD7616 or AD7616-P.
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Figure 25. Register Map Tab
REGISTER MAP TAB
Bitfields
Register Tree
The Bitfields pane, Label 29 in Figure 25, shows the bit fields
within a selected register. The values can be changed using the
Value dropdown menu or directly entering a value in the
numeric field.
The register tree, Label 27 in Figure 25, displays the full register
map in a hierarchical tree view. Each register is shown as a
branch. Click the expand button next to each register to show
the bit fields contained within the corresponding register.
Register Control
The Register pane, Label 28 in Figure 25, allows the user to
change an individual bit of the register, selected from the
register tree, by either clicking the relevant bit or typing the
register value into the numeric field.
Save and Load
The Save button, Label 30 in Figure 25, allows the user to save
the current register map setting to a file. The Load button
allows the user to load a setting from a previously saved file.
EXITING THE SOFTWARE
To exit the software, click the Close button of any window, or
press Esc on the computer keyboard.
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NOTES
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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