EVAL-AD7492SDZ User Guide
UG-371
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
AD7492
1.25 MSPS, 16 mW Internal REF and CLK,
12-Bit Parallel ADC
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 24
FEATURES
Full-featured evaluation board for the
AD7492
PC control in conjunction with the
S
ystem
D
emonstration
P
latform (EVAL-SDP-CB1Z)
PC software for control and data analysis (time and
frequency domain)
Standalone capability (when designing boards ensure that
digital lines can be disconnected from everything else on
the board to ensure operation)
EVAL-AD7492SDZ CONTENTS
EVAL-AD7492SDZ
evaluation board
Evaluation software CD for the
AD7492
9 V mains power supply adapter
ADDITIONAL EQUIPMENT NEEDED
System demonstration platform (EVAL-SDP-CB1Z)
Precision analog signal source
SMB cable
USB cable
EVALUATION BOARD DESCRIPTION
The
EVAL-AD7492SDZ
is a full-featured evaluation board,
designed to allow the user to easily evaluate all features of the
AD7492
. The evaluation board can be controlled via the system
demonstration platform (SDP) connector (J1). The SDP board
allows the evaluation board to be controlled via the USB port of
a PC using the
AD7492
evaluation software.
On-board components include the
AD8597
ultralow distortion,
ultralow noise operational amplifier (single); the
AD8021
low
noise, high speed amplifier for 16-bit systems; the
ADP1613
650 kHz/1.3 MHz step-up PWM dc-to-dc switching converter
with 2.0 A current limit; the
ADP3303-5
high accuracy anyCAP™
200 mA low dropout linear regulator; and the
ADP2301
1.2 A,
20 V, 1.4 MHz nonsynchronous step-down switching regulator.
The evaluation board features analog bias-up circuitry. Bipolar
signals are input via the SK3 SMB connector and are biased up
by the on-board bias-up buffer circuit. The biased up signal is
available at the VIN SMB and can be applied to the VIN input
of the
AD7492
device by placing the LK10 link in Position A.
Various link options are described in the Evaluation Board
Hardware section. The Parallel Interface section of this user
guide should be consulted when configuring the board for
standalone operation.
Complete specifications for the
AD7492
are provided in the
AD7492
data sheet, available from Analog Devices, Inc., which
should be consulted in conjunction with this user-guide when
using the
AD7492
evaluation board.
FUNCTIONAL BLOCK DIAGRAM
CS
PS/FS
CONVST
BUSY
DV
DD
AD7492
5V
ADG330X
AV
DD
DVDD
VDD
RD
VIN
+
–
REFOUT
VDRIVE
AVDD
GND
GND
GND
GND
AV
DD
AD8021
AD8597
EVAL-AD7492SDZ
SDP BOARD
PARALLEL
PORT
BF527DSP
DC
INPUT
JACK
ON-BOARD
POWER SUPPLIES
AM1185
POWER
SEQUENCER
ADP1613
±5V
ADP2301
SDP5V
ADP1720
3.3V
ADP3303
+5V
OP AMP
SUPPLIES
VSS
VDRIVE
INPUT
BUFFER
UNIPOLAR
INPUT SIGNAL
BIPOLAR
INPUT SIGNAL
BIAS UP
CIRCUITRY
EXTERNAL
OFFSET
ADR431
REF
DATA BUS
D0 TO D11
LEVEL
SHIFTERS
10493-
001
Figure 1.
Содержание EVAL-AD7492SDZ
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Страница 22: ...UG 371 EVAL AD7492SDZ User Guide Rev 0 Page 22 of 24 10493 035 Figure 34 Layer 4 Component Side View ...
Страница 23: ...EVAL AD7492SDZ User Guide UG 371 Rev 0 Page 23 of 24 NOTES ...
