Evaluation Board User Guide
UG-478
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
Evaluation Board for the AD7176-2—24-Bit, 250 kSPS Sigma-Delta ADC with
20 μs Settling
FEATURES
GENERAL DESCRIPTION
Full featured evaluation board for the AD7176-2
PC control in conjunction with the system demonstration
platform (EVAL-SDP-CB1Z)
PC software for control and data analysis (time domain)
Standalone capability
The EVAL-AD7176-2SDZ evaluation kit features the AD7176-2
24-bit, 250 kSPS analog-to-digital converter (ADC). A 7 V to
9 V external bench top supply is regulated to 5 V and 3.3 V to
supply the AD7176-2 and support all necessary components.
The EVAL-AD7176-2SDZ board connects to the USB port of
the PC by connection to the EVAL-SDP-CB1Z motherboard.
ONLINE RESOURCES
The EVAL-AD7176-2SDZ software fully configures the
AD7176-2 device register functionality and provides dc time
domain analysis in the form of waveform graphs, histograms,
and associated noise analysis for ADC performance evaluation.
Evaluation Kit Contents
EVAL-AD7176-2SDZ evaluation board
Evaluation software CD for the AD7176-2
Documents Needed
AD7176-2 data sheet
UG-478 user guide
Required Software
EVAL-AD7176-2SDZ evaluation software
The EVAL-AD7176-2SDZ is an evaluation board that is
designed to allow the user to evaluate the features of the ADC.
The user PC software executable controls the AD7176-2 over
the USB through the system demonstration platform board
(EVAL-SDP-CB1Z).
EQUIPMENT NEEDED
EVAL-AD7176-2SDZ evaluation board
EVAL-SDP-CB1Z system demonstration platform
External 7 V to 9 V power supply
DC signal source
USB cable
PC running Windows with USB 2.0 port
FUNCTIONAL BLOCK DIAGRAM
7V TO 9V
VIN
ADP1720
5V LDO
ADR445
5V VREF
ADP1720
3.3V LDO
ADP7104
5V LDO
ADA4940-1
1.8V
LDO
1.8V
LDO
PRECISION
REFERENCE
CROSSPOINT
MULTIPLEXER
AD8656
USB
ON-BOARD
NOISE TEST
INT
REF
AIN0
AIN1
AIN2
AIN3
AIN4
CS
SCLK
ADSP-BF527
DIN
DIGITAL
FILTER
ADC
POWER
DOUT/RDY
SYNC/ERROR
SDP-B
LED
STATUS
XTAL AND INTERNAL
CLOCK OSCILLATOR
CIRCUITRY
I/O
CONTROL
AD7176-2
TO AD7175-2
REFOUT PIN
AD8656
AVSS
GPIO0 GPIO1
XTAL1 CLKIO/XTAL2
DGND
AD8475
Figure 1. EVAL-AD7176-2SDZ Block Diagram
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
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