EVAL-AD7903SDZ 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
AD7903
Dual Differential, 16-Bit, 1 MSPS PulSAR ADC
FEATURES
Full featured evaluation board for the
AD7903
Versatile analog signal conditioning circuitry
On-board reference, reference buffers, and ADC drivers
System demonstration board compatible (EVAL-SDP-CB1Z)
PC software for control and data analysis of time and
frequency domain
ADDITIONAL EQUIPMENT/SOFTWARE NEEDED
System demonstration platform (EVAL-SDP-CB1Z)
Precision analog signal source
Power supply, +7 V/−2.5 V (optional)
USB cable
SMA cable
PC running Windows XP SP2, Windows Vista, Windows 7, or
higher with USB 2.0 port
Evaluation software for the
AD7903
(download from
AD7903
product page)
EVALUATION KIT CONTENTS
EVAL-AD7903SDZ
evaluation board
Wall power supply 9 V dc adapter
Daughter card power connector
ONLINE RESOURCES
Documents Needed
AD7903
data sheet
EVAL-AD7903SDZ
user guide
Required Software
EVAL-AD7903SDZ
evaluation software
FAQs
and
Troubleshooting
TYPICAL SETUP
SMA
CONNECTOR
SIGNAL SOURCE
PC
Figure 1. Typical Setup for the
EVAL-AD7903SDZ
(EVAL-AD7903SDZ on Left and
EVAL-SDP-CB1Z
on Right)
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
Additional Equipment/Software Needed ...................................... 1
Online Resources .............................................................................. 1
Typical Setup ..................................................................................... 1
Revision History ............................................................................... 2
General Description ......................................................................... 3
Getting Started .................................................................................. 4
Software Installation Procedures ................................................ 4
Evaluation Board Setup Procedures........................................... 7
Evaluation Board Hardware ............................................................ 8
Device Description ....................................................................... 8
Power Supplies .............................................................................. 8
Link Configuration Options ......................................................... 10
Evaluation Board Circuitry ........................................................... 11
Analog Inputs .............................................................................. 11
Reference ..................................................................................... 11
Serial Interface ............................................................................ 11
EVAL-AD7903SDZ User Guide
Modes of Operation ....................................................................... 12
SDP Controlled Mode ............................................................... 12
Standalone Mode ........................................................................ 12
How to Use the Software ............................................................... 13
Setting Up the System for Data Capture:
Board Operation/Connection Sequence ................................. 13
Starting the Software .................................................................. 13
Overview of the Main Window ................................................ 15
Generating a Waveform Analysis Report................................ 16
Generating a Histogram of the ADC Code Distribution ..... 17
Generating a Fast Fourier Transform of AC Characteristics ......18
Generating a Summary of the Waveform, Histogram, and
Fast Fourier Transform .............................................................. 19
Evaluation Board Schematics and Artwork ................................ 20
EVAL-AD7903SDZ Schematics ............................................... 20
EVAL-AD7903SDZ Layout ....................................................... 25
Bill of Materials ............................................................................... 28
Related Links ................................................................................... 30
REVISION HISTORY
1/14—Revision 0: Initial Version
Rev. 0 | Page 2 of 32
EVAL-AD7903SDZ User Guide
GENERAL DESCRIPTION
The
EVAL-AD7903SDZ
is an evaluation board designed to
demonstrate the low power
AD7903
performance and to
provide an easy to understand interface for a variety of system
applications. The
AD7903
is a dual differential 16-bit, 1 MSPS
PulSAR® ADC. A full description of the
AD7903
is available in
the
AD7903
data sheet and should be consulted when using this
evaluation board.
The evaluation board is ideal for use with the Analog Devices, Inc.,
system demonstration platform (SDP) board,
EVAL-SDP-CB1Z.
The evaluation board interfaces to the SDP board via a 120-pin
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connector. SMA Connectors J6, J7, J10, and J15 are provided to
connect a low noise analog signal source.
The user PC software executable controls the evaluation board
over the USB through the SDP board,
EVAL-SDP-CB1Z.
On-board components include the following:
ADR435:
high precision, buffered band gap 5.0 V reference
AD8031:
reference buffer
ADA4841-1:
signal conditioning circuit with op amps
ADP7104
and
ADP2301:
regulators to derive necessary voltage
levels on board
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GETTING STARTED
SOFTWARE INSTALLATION PROCEDURES
The evaluation board software can be downloaded from the
AD7903
product page on the Analog Devices website, at
www.analog.com.
There are two parts to the installation:
•
•
AD7903
evaluation board software installation
EVAL-SDP-CB1Z
system demonstration platform board
drivers installation
4.
EVAL-AD7903SDZ User Guide
Select the location to install the software, and then click
Next.
(The default location is
C:\Program Files (x86)\
Analog Devices\AD7902_03 Evaluation Software\.
This location also contains the executable software and
example files.)
Warning
The evaluation board software and drivers must be installed
before connecting the evaluation board and
EVAL-SDP-CB1Z
board to the USB port of the PC to ensure that the evaluation
system is correctly recognized when it is connected to the PC.
Installing the
AD7903
Evaluation Board Software
To install the
AD7903
evaluation board software,
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1.
2.
3.
Start the Windows operating system and download the
software from the
AD7903
product page on the Analog
Devices website, at
www.analog.com.
Unzip the downloaded file.
Double-click the
setup.exe
file to begin the evaluation
board software installation (see Figure 2).
Figure 3.
AD7903
Evaluation Board Software Installation:
Selecting the Location for Software Installation
(the Default Location Is Shown)
5.
A license agreement appears. Read the agreement, and then
select
I accept the License Agreement
and click
Next.
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Figure 2.
AD7903
Evaluation Board Software Installation: Installation Begins
Figure 4.
AD7903
Evaluation Board Software Installation:
Accepting the License Agreement
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EVAL-AD7903SDZ User Guide
6.
A summary of the installation is displayed. Click
Next
to
continue.
8.
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The dialog box informs you when the installation is
complete. Click
Next.
11800-005
Figure 5.
AD7903
Evaluation Board Software Installation:
Reviewing a Summary of the Installation
Figure 7.
AD7903
Evaluation Board Software Installation:
Indicating When the Installation Is Complete
7.
A dialog box shows the installation progress.
9.
The setup for the installation of the
EVAL-SDP-CB1Z
system demonstration platform board drivers auto-
matically begins to load.
Figure 8. Loading the Setup for SDP Drivers Installation
Installing the
EVAL-SDP-CB1Z
System Demonstration
Platform Board Drivers
After the installation of the evaluation board software is complete,
a welcome window is displayed for the installation of the
EVAL-
SDP-CB1Z
system demonstration platform board drivers.
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1.
Make sure that all other applications are closed, and then
click
Next.
Figure 6.
AD7903
Evaluation Board Software Installation:
Displaying Installation Progress
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Figure 9.
EVAL-SDP-CB1Z
Drivers Setup:
Beginning the Drivers Installation
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