Analog Devices EVAL-AD5592RSDZ User manual

EVAL-AD5592RSDZ User Guide
UG-753
One Technology Way •P. O. Box 9106 •Norwood, MA 02062-9106, U.S.A. •Tel: [phone] •Fax: [phone] •www.analog.com
Evaluating the 8-Channel, 12-Bit, Configurable ADC/DAC/GPIO AD5592R with On-
Chip Reference and SPI Interface
FEATURES
Full featured evaluation board for the AD5592R
On-board reference
Various link options
PC control in conjunction with Analog Devices, Inc., system
demonstration platform (SDP-B, EVAL-SDP-CB1Z)
EQUIPMENT NEEDED
AD5592R evaluation board
CD includes
Self-installing software that allows users to control the
board and exercise all functions of the device
Electronic version of the EVAL-AD5592RSDZ user guide
ADDITIONAL EQUIPMENT AND SOFTWARE
NEEDED
EVAL-SDP-CB1Z system demonstration platform, includes a
USB cable
PC running Windows XP SP2, Windows Vista, or Windows 7
with USB 2.0 port
ONLINE RESOURCES
Documents Needed
AD5592R data sheet
EVAL-AD5592RSDZ user guide
Required Software
AD5592R evaluation software (download from the
EVAL-AD5592RSDZ product page)
TYPICAL SETUP
Figure 1.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.Rev. 0 | Page 1 of 13

UG-753 EVAL-AD5592RSDZ User Guide
TABLE OF CONTENTS
Features .............................................................................................. 1
Equipment Needed........................................................................... 1
Additional Equipment and Software Needed............................... 1
Online Resources.............................................................................. 1
Typical Setup ..................................................................................... 1
Revision History ............................................................................... 2
General Description ......................................................................... 3
Getting Started .................................................................................. 4
Installing the Software ................................................................. 4
Evaluation Board Setup Procedures........................................... 4
Evaluation Board Hardware ............................................................ 5
Power Supplies .............................................................................. 5
Digital Input And Output Signals .............................................. 5
Analog Input And Output Signals ..............................................5
Link Configuration Options ............................................................6
Setup Conditions ...........................................................................6
Evaluation Board Circuitry ..............................................................7
How to Use the Software ..................................................................8
Starting the Software.....................................................................8
DAC Tab .........................................................................................8
ADC Tab .........................................................................................8
GPIO Tab........................................................................................9
Simple Controls .............................................................................9
Evaluation Board Schematics........................................................ 10
Ordering Information.................................................................... 12
Components List ........................................................................ 12
REVISION HISTORY
10/14—Revision 0: Initial Version
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EVAL-AD5592RSDZ User Guide UG-753
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GENERAL DESCRIPTION
This user guide details the operation of the evaluation board for
the AD5592R 8-channel, 12-bit, configurable analog-to-digital
converter (ADC)/digital-to-analog converter (DAC)/general-
purpose input/output (GPIO) with on-chip reference and SPI
interface.
The evaluation board is designed to help customers quickly
prototype new AD5592R circuits and reduce design time.
The AD5592R operates from a single 2.7 V to 5.5 V supply and
incorporates an internal 2.5 V reference to give an output
voltage span of 0 V to 2.5 V or 0 V to 5 V. An external reference
(a 2.5 V reference is provided on the evaluation board) can also
be used to give an output from 0 V to VREF or 0 V to 2 × VREF.
Full data on the AD5592R can be found in the data sheet,
available from Analog Devices. Consult the data sheet in
conjunction with this user guide when using the evaluation
board.
The evaluation board interfaces to the USB port of a PC via the
SDP-B. Software is supplied with the evaluation board to allow
the user to program the AD5592R.
This evaluation board requires the EVAL-SDP-CB1Z board
(SDP-B controller board), which is available for order on the
Analog Devices website at www.analog.com.

UG-753 EVAL-AD5592RSDZ User Guide
GETTING STARTED
INSTALLING THE SOFTWARE
The evaluation kit for the AD5592R includes self-installing
software on a CD. The software is compatible with
Windows® XP, Windows Vista (32-bit version), and Windows 7
(32- and 64-bit versions). The software must be installed before
connecting the SDP-B board to the USB port of the PC to
ensure that the SDP-B board is recognized when it is connected
to the PC.
To install the software, take the following steps:
1. Start the Windows operating system and insert the CD.
2. The installation software opens automatically. If it does not
open automatically, run the setup.exe file from the CD.
3. After installation is complete, power up the evaluation
board as described in the Power Supplies section.
4. Connect the evaluation board to the SDP-B board, and
connect the SDP-B board into the PC using the USB cable
included in the box.
5. When the software detects the evaluation board, proceed
through any dialog boxes that appear to finalize the installation.
EVALUATION BOARD SETUP PROCEDURES
1. Connect the evaluation board to the SDP-B board, and
connect the USB cable from the SDP-B board to the PC.
2. Power the SDP-B and evaluation boards by connecting 6 V
to the J3 connector.
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EVAL-AD5592RSDZ User Guide UG-753
EVALUATION BOARD HARDWARE
POWER SUPPLIES
To use the evaluation board with the SDP-B board, a 6 V power
supply is required, which is connected to Connector J3. The
evaluation board can also be used without the SDP-B board. In
this case, Connector J2 is the power supply input for the VDD
supply.
Both the AGND and the DGND inputs are provided on the
board. The AGND and DGND planes are connected at one
location close to the AD5592R. It is recommended that AGND
and DGND not be connected elsewhere in the system to avoid
ground loop problems.
All supplies are decoupled to ground with 10 µF tantalum and
0.1 µF ceramic capacitors.
Table 1. Power Supply Connectors
Connector Name Voltage
J1
Not used
J2 Analog power supply, VDD
J3 6 V board positive power supply
DIGITAL INPUT AND OUTPUT SIGNALS
When the SDP-B board is used to control the AD5592R
evaluation board, the digital input signals are applied to
Connector J4. When the SDP-B board is not being used, digital
signals must be applied to the 10-way header, J5.
ANALOG INPUT AND OUTPUT SIGNALS
The input/output pins of the AD5592R are available on SMB
connectors, I/O0 to I/O7. These are analog inputs or outputs
depending on whether the input/output pins are configured as
ADCs or DACs, respectively. I/O0 to I/O7 are digital inputs or
outputs if the input/output pins are configured as GPIOs.
V
LOGIC
V
DD
DGND AGND AGND
EXT_REF
I/O0
+6V
SDP CONNECTOR
EEPROM
V
REF
ADR431
2.5V REF
10-WAY
HEADER
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
SPI
AD5592R
12600-002
Figure 2. Evaluation Board Block Diagram
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UG-753 EVAL-AD5592RSDZ User Guide
LINK CONFIGURATION OPTIONS
A number of link options are incorporated in the evaluation
board and must be set for the required operating conditions
before using the board. The functions of these link options are
described in detail in Table 2.
SETUP CONDITIONS
Before applying power and signals to the evaluation board take
care to ensure that all link positions are set as required by the
operating mode. The evaluation board operates in two different
modes—SDP-B controlled mode and standalone mode.
The Default Position column of Table 2 shows the default
positions in which the links are set when the evaluation board is
packaged. When the board is shipped, it is assumed that the
user intends to operate the evaluation board with the SDP-B
board (SDP-B controlled mode).
Table 2. Link Functions
Link Name Option Default Position
LK1 This link selects the VDD source for the AD5592R. A
Position A selects the internal voltage source (5V_VDD) from the ADP3331.
Position B selects an external supply voltage (EXT_VDD).
LK2, LK4,
LK4-LK9,
LK20
These links connect 100 kΩ pull-down resistors from the input/output pins to AGND. When the link is
removed, the level of associated pins is determined by the configuration of the AD5592R.
IN
LK3 This link selects the reference source for the AD5592R. A
Position A selects the on-board 2.5 V reference as the reference source.
Position B selects an off-board voltage reference via the EXT_REF connector. Select this option if the
internal reference is to be used.
LK11 This link is not used for the AD5592R. OUT
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EVAL-AD5592RSDZ User Guide UG-753
EVALUATION BOARD CIRCUITRY
The AD5592R evaluation board allows the function and
performance of the device to be easily tested. The evaluation
board contains two voltage regulators that not only generate the
analog and digital power supplies but also power the SDP-B
board if it is connected. The two regulators are powered via a
6 V supply attached to Connector J3. Alternatively, a separate
supply can be attached via Connector J2.
The SDP-B board typically controls the AD5592R and is
attached to Connector J4. The SDP-B board allows the software
provided with the kit to be used to configure the AD5592R as
well as write and read data to and from the AD5592R.
When the SDP-B is not required, the control signals can be
applied to the AD5592R by connecting them to the relevant
pins on Connector J5.
In addition to the on-chip reference of the AD5592R, an
external, 2.5 V reference is also provided and can be connected
to the VREF pin of the AD5592R using Link LK3.
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UG-753 EVAL-AD5592RSDZ User Guide
HOW TO USE THE SOFTWARE
STARTING THE SOFTWARE
To run the program, do the following:
1. Connect the evaluation board to the SDP-B board,
and connect the USB cable from the SDP-B board to
the PC.
2. Power the SDP-B and evaluation boards by connecting
6 V to the J3 connector.
3. Click Start > All Programs > Analog Devices >
AD5592R >.AD5592R Evaluation Software. When
the software connects to the evaluation board, the
message shown in Figure 3 displays.
Figure 3. Connection Message
If the SDP-B board is not connected to the USB port when
the software is launched, a connectivity error displays (see
Figure 4). Simply connect the evaluation board to the USB
port of the PC, wait a few seconds, click Rescan, and follow
the instructions.
Figure 4. Connectivity Error
Alternatively, the software can be used without an evaluation
board. The software runs in simulation mode, displaying
expected outputs based on the input data. When the software
runs, the user is first prompted to configure the AD5592R
input/output pins as shown in Figure 5. The main window of
the AD5592R evaluation software then opens, as shown in
Figure 6. The user can click on the block diagram to access the
DAC, ADC, and GPIO functions, as well as other options such
as enabling the internal reference.
Figure 5. Configuration Menu
DAC TAB
The DAC tab gives the user access to the DAC functions. Each
DAC has its own numeric control where a value can be loaded
to the appropriate DAC. Clicking Update DAC Registers loads
the data appropriately as determined by the setting of the LDAC
Mode control.
ADC TAB
The ADC tab allows the user to select ADC channels on which
to perform conversions. The Repeat Sequence checkbox should
be set to take multiple samples. The user can select the number
of samples per channel and the sample frequency. Clicking Take
Samples programs the AD5592R for the desired sequence and
takes the appropriate number of samples. The data collected
from the AD5592R is split into separate channels and displayed
on the graph as voltage. The user has the option to save the data
to a comma delimited spreadsheet file.
Figure 6. Main Window, Block Diagram View
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EVAL-AD5592RSDZ User Guide UG-753
Figure 7. DAC Tab
Figure 8. ADC Tab
GPIO TAB
The GPIO tab allows the user to set the output levels for pins set
as general-purpose outputs and read the levels of pins set as
general-purpose inputs.
SIMPLE CONTROLS
The simple controls tab allows the user to enter 16-bit values
directly into the Write Array control. These values can then be
written to the AD5592R by clicking the Write and Read button.
Data that appears on the SDO pin of the AD5592R is shown in
the Read Array control. Note that the data displayed in the
Read Array control will be invalid if it is not part of a read
operation from the AD5592R. Any commands sent to
the AD5592R that change the configuration of the AD5592R
will not be reflected in the other tabs.
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UG-753 EVAL-AD5592RSDZ User Guide
EVALUATION BOARD SCHEMATICS
12600-009
Figure 9. AD5592R Schematic (Page 1 of 2)
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