Analog Devices EVAL-AD7175-2SDZ User Manual

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
20 μs Settling and Integrated Analog Input Buffers

FEATURES

Full featured evaluation board for the AD7175-2
PC control in conjunction with the SDP (see
from Analog Devices, Inc. for additional information)
PC software for control and data analysis (time domain)
Standalone capability

EVALUATION KIT CONTENTS

EVAL-AD7175-2SDZ evaluation board
Evaluation software CD
7 V to 9 V ac-to-dc adapter

EQUIPMENT NEEDED

DC signal source
7V - 9V
VIN
External Analog Signal
Conditioning Playground
AVDD1
ADA4528-2 ADA4528-2
IN-AMP OPEN
Configured CONFIG
Crosspoint
Multiplexer
On Board
Noise Test
AIN 0
AIN 1
AIN 3
AIN 4
To AD7175-2
TEMP
REFOUT pin
SENSOR
AD8475 AMP
-VE Supply
+/-10V Input "SURF BOARD"
Rail
Option CONNECTOR
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
AD7175-2 24-Bit, 250 kSPS, Sigma-Delta ADC with
EVAL-SDP-CB1Z

FUNCTIONAL BLOCK DIAGRAM

ADP7118 ADR435
5V LDO 5V VREF
REGCAP A REF- REF+
AVDD2
Reference
1.8V
Input
LDO
Buffers
Analog
AVDD
Input
Buffers
Σ-Δ ADC
I/O
AVSS
CONTROL
AD7175-2
AVSS GPIO 0 GPIO 1
-2.5V
AVSS
Option
ADP7182
-VE LDO
Figure 1. EVAL-AD7175-2SDZ
Rev. Pr.C | Page 1 of 12
EVAL-AD7175-2SDZ User Guide

GENERAL DESCRIPTION

The EVAL-AD7175-2SDZ evaluation kit features the
AD7175-2, a 24-bit, 250 kSPS analog-to-digital converter
(ADC) with integrated rail to rail 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
support components. The
to a USB port via the system demonstration platform (SDP)
EVAL-SDP-CB1Z
The EVAL-AD7175-2SDZ
the AD7175-2 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.
ADP7118
3.3V LDO
REFOUT IOVDD REGCAP D
Buffered
Precision 1.8V
Reference
LDO
INT
REF
SERIAL
INTERFACE
& CONTROL
DIGITAL
FILTER
XTAL & INTERNAL
CLOCK OSCILLATOR
CIRCUITRY
DGND
XTAL1 XTAL2/CLKIO
Block Diagram
UG-AD7175-2
EVAL-AD7175-2SDZ
controller board.
evaluation software fully configures
ADP7104
5V LDO
USB
CS
SCLK
DIN
ADSP-BF527
DOUT/RDY
SYNC PO W ER
ERROR
SDP-B
AD7175-2 and
board connects
LED
STATUS