EVAL-AD7177-2SDZ User Guide
UG-849
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
AD7177-2
32-Bit, 10 kSPS, Sigma-Delta ADC with
100 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 14
FEATURES
Full featured evaluation board for the
AD7177-2
PC control in conjunction with the Analog Devices, Inc.,
EVAL-SDP-CB1Z
system demonstration platform (SDP)
PC software for control and data analysis (time domain)
Standalone capability
EVALUATION KIT CONTENTS
EVAL-AD7177-2SDZ
evaluation board
Evaluation software CD
7 V to 9 V ac-to-dc adapter
Plastic screw washer set
EQUIPMENT NEEDED
DC signal source
PC running Windows® XP to Windows 7
GENERAL DESCRIPTION
The
EVAL-AD7177-2SDZ
evaluation kit features the
AD7177-2
,
a 32-bit, 10 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, which supply the
AD7177-2
and support components.
The
EVAL-AD7177-2SDZ
evaluation board connects to the USB
port of a PC via the
EVAL-SDP-CB1Z
SDP controller board.
The
AD7177-2
evaluation software fully configures the
AD7177-2
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.
Full specifications for the
AD7177-2
are available in the product
data sheet, which should be consulted in conjunction with this
user guide when using the evaluation board.
FUNCTIONAL BLOCK DIAGRAM
POWER
STATUS
LED
ADSP-BF527
L
ED
USB
ON-BOARD
NOISE TEST
7V TO 9V
VIN
CS
SCLK
DIN
DOUT/RDY
ADP7104
5V LDO
ADP7118
5V LDO
ADP7118
3.3V LDO
ADR445
5V VREF
TO AD7177-2
REFOUT PIN
SDP-B
AIN0
AIN1
AIN3
AIN4
AVSS
CROSSPOINT
MULTIPLEXER
AVDD
Σ-Δ ADC
TEMPERATURE
SENSOR
AVSS
SERIAL
INTERFACE
AND
CONTROL
SYNC
ERROR
INPUT/OUTPUT
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
AD7177-2
INT
REF
DIGITAL
FILTER
ADP7182
–VE LDO
ADM660
–2.5V
AVSS
OPTION
ADA4528-2
IN-AMP
CONFIGURED
ADA4528-2
OPEN
CONFIG
AD8475
±10V INPUT
OPTION
AMP
SURF BOARD
CONNECTOR
EXTERNAL ANALOG SIGNAL
CONDITIONING PLAYGROUND
13282-
001
FROM
ADP7104 LDO
Figure 1.
