Evaluation Board User Guide
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
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Evaluating the
ADT7320/ADT7420
Temperature Sensors
FEATURES
Supports the
ADT7320
and
ADT7420
temperature sensors
Powered from USB port—no additional power supply
required
PC software for control of temperature sensors
Supported operating systems: Windows 2000 and higher
Additional external evaluation board for remote
temperature measurements (ADT7x20EBZ)
Additional external flex boards for faster thermal response
GENERAL DESCRIPTION
This user guide describes the EVAL-ADT7x20EBZ,
ADT7320FBZ, and ADT7420FBZ evaluation board hardware
and software and includes detailed schematics and PCB layout
artwork. The ADT7x20 (EVAL-ADT7x20EBZ) evaluation
board is a compact, easy-to-use platform for evaluating all
features of the
ADT7320
and
ADT7420
temperature sensors.
The ADT7x20FBZ flex boards are optional extras to the
evaluation kit, which can be used as an extension to the
ADT7x20 evaluation board or as standalone devices for
interfacing with a microcontroller or FPGA.
The evaluation kit allows the user to evaluate the performance
of the
ADT7320
and
ADT7420
temperature sensors using a PC.
The kit consists of two boards; a main board connected to the
PC through the USB port and an external board. The external
board and flex board are attached to the main board using wires
that can withstand high temperatures, and can be used for
remote temperature measurements in oil baths or ovens where
the temperature exceeds the specifications of the USB cable.
The evaluation software allows the user to select the main
board or the external board, as well as the desired temperature
sensor device.
When using the ADT7x20 evaluation board, in addition to this
user guide, the user should also consult the
ADT7320
and
ADT7420
data sheets (available at the Analog Devices, Inc.,
website,
www.analog.com).
EVALUATION KIT CONTENTS
Fully fitted printed circuit board (PCB) with USB interface
Additional external PCB
Evaluation software CD
USB cable
Documentation
Wiring guide
OPTIONAL EQUIPMENT
ADT7320FBZ flex board
ADT7420FBZ flex board
Figure 1. ADT7x20 Evaluation Board—Main Board
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
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TABLE OF CONTENTS
Features .............................................................................................. 1
Evaluation Kit Contents ................................................................... 1
Optional Equipment......................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
External Board Photographs ........................................................... 3
Evaluation Board Software .............................................................. 4
Software Installation .................................................................... 4
Using the ADT7x20 Evaluation Software ................................. 4
Evaluation Board User Guide
Device Selection ............................................................................4
Board Selection ..............................................................................4
Device Evaluation Software .........................................................5
Wiring Guidelines .............................................................................8
Evaluation Board Schematics and Artwork ...................................9
Ordering Information .................................................................... 15
Bill of Materials ........................................................................... 15
Related Links ................................................................................... 16
REVISION HISTORY
8/13—Rev. 0 to Rev. A
Added Optional ADT7320FBZ and ADT7420FBZ
Flex Boards .......................................................................... Universal
12/12—Revision 0: Initial Version
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Evaluation Board User Guide
EXTERNAL BOARD PHOTOGRAPHS
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Figure 2. ADT7x20 Evaluation Board—External Board
Figure 3. ADT7320FBZ Evaluation Board—External Board
Figure 4. ADT7420FBZ Evaluation Board—External Board
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EVALUATION BOARD SOFTWARE
SOFTWARE INSTALLATION
The ADT7x20 evaluation kit includes the evaluation software
on a CD-ROM. The software is compatible with Windows®
2000/XP, Vista, and Windows 7. The evaluation software must
be installed before connecting the evaluation board to the USB
port of the PC to ensure that Windows recognizes it and to
ensure that the driver is installed correctly. To install the
software, run the
ADT7x20 Evaluation Software Install.exe
file from the CD-ROM.
After the installation has completed, connect the ADT7x20
evaluation board to the PC USB port using the cable supplied.
When the evaluation board is detected by the operating system,
proceed through any dialog boxes that appear to finalize the
installation.
Evaluation Board User Guide
DEVICE SELECTION
When the evaluation software is launched, a window appears
prompting you to select the desired device, as shown in Figure 5.
Figure 5. Device Selection Window
USING THE ADT7x20 EVALUATION SOFTWARE
During installation, a shortcut to the evaluation software
is installed in the
Start
menu. From the
Start
menu, select
All Programs,
then
Analog Devices,
and click
ADT7x20
Evaluation Software.
You can launch the software using either
this shortcut or by running the
ADT7x20 Evaluation
Software.exe
file from the installation directory.
The ADT7320 uses the SPI interface whereas the ADT7420 uses
the I
2
C. Other than the control interface, the two devices are
identical in performance.
BOARD SELECTION
The device selected at the previous step in the Device Selection
section can be located either on the main board or on the
external board.
After the desired device is selected, a window appears
prompting you to select the location of the device (see Figure 6).
Figure 6. On-Board/External Device Selection Window
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Evaluation Board User Guide
DEVICE EVALUATION SOFTWARE
After you complete the device and board selections, the evalua-
tion software loads, allowing full control over the selected
device. The software layout is the same for both the
ADT7320
and
ADT7420.
There are three tabs in the evaluation software:
•
•
•
Configuration Register
Temperature Monitor
ADT7x20 Registers
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Configuration Register
This tab allows you full control over the configuration register
of the selected device, as shown in Figure 7. At startup, the
evaluation software initializes the configuration register to the
default value of 0x90 (hexadecimal). For more details on how to
set the configuration register, consult the device data sheet.
The evaluation software also has
Easy Setup
and
Close
options.
Figure 7. Configuration Register Tab
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