Features; Evaluation Kit Contents; Equipment Needed; General Description - Analog Devices AD7172-4 User Manual

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Evaluating the

FEATURES

Full featured evaluation board for the
PC control in conjunction with the system demonstration
platform (SDP), see the EVAL-SDP-CB1Z
Analog Devices, Inc., for additional information
PC software for control and data analysis (time domain)
Standalone capability

EVALUATION KIT CONTENTS

EVAL-AD7172-4SDZ evaluation board
Evaluation software CD
7 V to 9 V ac to dc adapter
Plastic screw washer set

EQUIPMENT NEEDED

DC signal source
7V TO 9V
V IN
EXTERNA L ANALOG SIGNAL
CONDITIONING PLAYGROUND
ADA4528-2 ADA4528-2
IN-AMP OPEN
CONFIGURED CONFIG
MULTIPLEXER
ON-BOARD
NOISE TEST
AIN0/REF2–
AIN1/REF2+
AIN7
AIN8
TO V CM (92.5V)
AVSS
ADP7182
AD8475 AMP
–2.5V LDO
±10VINPUT SURFBOARD
OPTION CONNECTOR
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
AD7172-4 Low Power 24-Bit, 31.25 kSPS, Sigma-Delta ADC with
True Rail-to-Rail Buffers
AD7172-4
from
EVAL-AD7172-4SDZ
ADP7118 ADR445
5V LDO 5V V REF
AVDD1 AVDD2 REGCAPA REF–
1.8V
LDO
CROSSPOINT
RAIL-TO-RAIL
ANALOG
AVDD
INPUT
BUFFERS
Σ-Δ ADC
I/O AND EXTERNAL
AVSS
MUX CONTROL
PDSW GPIO0 GPIO1 GPIO2
–2.5V
AVSS
OPTION
ADM660
ADP7104 +5V
EVAL-AD7172-4SDZ User Guide

GENERAL DESCRIPTION

The EVAL-AD7172-4SDZ
a 24-bit, 31.25 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 voltage supplies the
nents. The EVAL-AD7172-4SDZ
SDP on the
The EVAL-AD7172-4SDZ
the AD7172-4
interface and provides dc time domain analysis in the form of
waveform graphs, histograms, and associated noise analysis for
ADC performance evaluation.
BLOCK DIAGRAM
ADP7118
3.3V LDO
REF+ IOVDD REGCAPD
1.8V
LDO
RAIL-TO-RAIL
REFERENCE
INPUT
BUFFERS
SERIAL
INTERFACE
AND
CONTROL
DIGITAL
FILTER
XTAL AND INTERNAL
CLOCK OSCILLATOR
CIRCUITRY
AD7172-4
GPIO3 XTAL1 XTAL2/CLKIO DGND
Figure 1.
Rev. 0 | Page 1 of 12
evaluation kit features the AD7172-4,
AD7172-4
connects to a USB port via the
EVAL-SDP-CB1Z controller board.
evaluation software fully configures
device functionality via a user accessible register
ADP7104
5V LDO
USB
CS
SCLK
DIN
DOUT/RDY
L
E
SYNC
D
POWER
ERROR
SDP-B
UG-763
and support compo-
ADSP-BF527
LED
STATUS