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EVAL-AD7714-3EBZ User Guide
UG-761
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Te l: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Evaluation Board for the AD7714-3, 24-Bit Low Power Sigma-Delta ( ADC
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. B | Page 1 of 10
FEATURES
Full featured evaluation board for the AD7714-3
Standalone USB interface
Various linking options
PC software for control of AD7714-3
EVALUATION KIT CONTENTS
EVAL-AD7714-3EBZ board
Software CD
USB cable
GENERAL DESCRIPTION
This user guide describes the evaluation board for the AD7714-3,
which is a low power, 24-bit signal conditioning Σ-Δ ADC.
The AD7714-3 is a complete analog front end for low frequency
measurement applications. It can be configured to have three
fully-differential inputs or five pseudo-differential inputs. It
employs a sigma-delta conversion technique to realize up to
24 bits of no missing codes performance. The input signal is
applied to an analog modulator. The modulator output is
processed by an on-chip digital filter. The analog input channel
of the AD7714-3 accepts analog input signals of ±V
REF
/gain,
with gain equal to 1 to 128. Simultaneous 50 Hz/60 Hz rejection
is available when the data update rate is set to 10 Hz.
Full data on the AD7714-3 is available in the AD7714 datasheet
available from Analog Devices, Inc. and should be consulted in
conjunction with this user guide when using the evaluation
board.
Note that the AD7714-3 evaluation board software should be
installed before connecting the AD7714-3 evaluation board
to the PC.
Other components on the AD7714-3 evaluation board include
the ADP3303 high precision, low power, 3.3 V output voltage
regulator, which is used to power the USB/SPI interface.
TYPICAL SETUP
AV
DD
MCLK IN ANALOG
INPUTS
AD589
AD7714-3
SPI/USB
INTERFACE
TEMP
DEMO
PC
AND
LabVIEW-BASED
SOFTWARE
12674-001
Figure 1.
