UG-478 Datasheet, PDF (1/40 Pages) Analog Devices – Evaluation Board for the AD7176-2—24-Bit, 250 kSPS Sigma-Delta ADC with 20 μs Settling

Evaluation Board User Guide
UG-478
One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: [phone] • Fax: [phone] • 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
ONLINE RESOURCES
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
EQUIPMENT NEEDED
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.
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.
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).
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
ADA4940-1
ADP1720
5V LDO
ADR445
5V VREF
ADP1720
3.3V LDO
ADP7104
5V LDO
AIN0
AIN1
AIN2
AIN3
AIN4
AD8656
ON-BOARD
NOISE TEST
TO AD7175-2
REFOUT PIN
AD8656
CROSSPOINT
MULTIPLEXER
1.8V
LDO
PRECISION
REFERENCE
INT
REF
1.8V
LDO
ADC
DIGITAL
FILTER
I/O
CONTROL
XTAL AND INTERNAL
CLOCK OSCILLATOR
CIRCUITRY
AD7176-2
CS
SCLK
DIN
DOUT/RDY
SYNC/ERROR
AVSS GPIO0 GPIO1
XTAL1 CLKIO/XTAL2 DGND
USB
POWER
ADSP-BF527
SDP-B
LED
STATUS
AD8475
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Figure 1. EVAL-AD7176-2SDZ Block Diagram
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