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EVAL-AD7173-8SDZ User Guide
UG-631
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 AD7173-8 24-Bit, 31.25 kSPS, Sigma-Delta ADC with
161 μs Settling and Integrated Analog Input Buffers
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 12
FEATURES
Full featured evaluation board for the AD7173-8
PC control in conjunction with the SDP (see EVAL-SDP-CB1Z
from Analog Devices, Inc. for additional information)
PC software for control and data analysis (time domain)
Standalone capability
EVALUATION KIT CONTENTS
EVAL-AD7173-8SDZ evaluation board
Evaluation software CD
7 V to 9 V ac-to-dc adapter
EQUIPMENT NEEDED
DC signal source
GENERAL DESCRIPTION
The EVAL-AD7173-8SDZ evaluation kit features the
AD7173-8, a 24-bit, 31.25 kSPS analog-to-digital converter
(ADC) with integrated analog input buffers, on-board power
supply regulation, and an external amplifier section for
amplifier evaluation. A 7 V to 9 V ac-to-dc adapter is regulated
to 5 V and 3.3 V; this supplies the AD7173-8 and support
components. The EVAL-AD7173-8SDZ board connects to a
USB port via the system demonstration platform (SDP)
EVAL-SDP-CB1Z controller board.
The EVAL-AD7173-8SDZ evaluation software fully configures
the AD7173-8 device functionality via a user accessible register
interface and provides dc time domain analysis in the form of
waveform graphs, histograms, and associated noise analysis for
ADC performance evaluation.
FUNCTIONAL BLOCK DIAGRAM
Figure 1. EVAL-AD7173-8SDZ Block Diagram
POWER
LED
ADSP-BF527
LED
USB
ON-BOARD
NOISE TEST
7V TO 9V
V
IN
CS
SCLK
DIN
DOUT/RDY
ADP7104
5V LDO
ADP1720
5V LDO
ADP1720
3.3V LDO
ADR435
5V VREF
TO AD7173-8
REFOUT PIN
SDP-B
AIN0/REF2–
A
IN1/REF2+
AIN15
AIN16
AV
SS
CROSSPOINT
MULTIPLEXER
AV
DD
Σ-∆ ADC
TEMP
SENSOR
AVSS PDSW
SERIAL
INTERFACE
AND
CONTROL
SYNC
ERROR
I/O
CONTROL
GPIO0 GPIO1
AVDD1
AVDD2
1.8V
LDO
REGCAPA IOVDD
1.8V
LDO
REGCAPD
DGND
BUFFERED
PRECISION
REFERENCE
REF+REF–
REFERENCE
INPUT
BUFFERS
ANALOG
INPUT
BUFFERS
REFOUT
XTAL1
XTAL2/
CLKIO
XTAL AND INTERNAL
CLOCK OSCILLATOR
CIRCUITRY
AD7173-8
INT
REF
DIGITAL
FILTER
GPO2 GPO3
STATUS
12024-001
