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Evaluation Board User Guide
UG-268
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 AD9838 11 mW Power, 2.3 V to 5.5 V, 16 MHz Complete DDS
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. B | Page 1 of 12
FEATURES
Full featured evaluation board for the AD9838
Graphical user interface software for board control and
data analysis
Connector to EVAL-SDP-CB1Z system demonstration
platform (SDP) board
Various power supply and reference link options
APPLICATIONS
Biomedical sensors
Bioelectrical impedance analysis
Electrochemical analysis
Impedance spectroscopy
Complex impedance measurement
Nondestructive testing
GENERAL DESCRIPTION
The AD9838 is a 16 MHz low power DDS device capable of
producing high performance sine and triangular outputs. It
also has an on-board comparator that allows a square wave to
be produced for clock generation. Consuming only 20 mW of
power at 3 V makes the AD9838 an ideal candidate for power-
sensitive applications.
The EVA L -AD9838SDZ board is used in conjunction with an
EVA L-SDP-CB1Z SDP board, available from Analog Devices, Inc.
The USB-to-SPI communication to the AD9838 is completed
using this Blackfin®-based development board.
A high performance, on-board 16 MHz trimmed general oscillator
is available to use as the master clock for the AD9838 system.
Various links and SMB connectors are also available on the
EVAL -AD9838SDZ board to maximize usability.
Complete specifications for the AD9838 are provided in the
AD9838 data sheet, available from Analog Devices, and should
be consulted in conjunction with this user guide when using the
evaluation board.
FUNCTIONAL BLOCK DIAGRAM
09805-001
SDATAFSYNC
IOUTB
MCLK
AD9838
RESET
FSELECT
PSELECT
EVAL-SDP-CB1Z
REF196
USB
SPORT
GPIO
IOUT
MCLK XO
SCLK
Figure 1.
