Evaluation Board User Guide
UG-184
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 a 18-Bit Serial Input, Voltage Output DAC
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 16
FEATURES
Full-featured evaluation board for the AD5781
Link options
PC control in conjunction with Analog Devices, Inc., system
development platform
PC software for control
EVALUATION BOARD DESCRIPTION
The EVAL-AD5781 is a full-featured evaluation board, designed
to allow the user to easily evaluate all features of the
AD5781
voltage output, 18-bit DAC. The AD5781 pins are accessible at
on-board connectors for external connection. The board can be
controlled by two means, via the on-board connector (J6) or via
the system development platform connector (J3). The SDP
board allows the evaluation board to be controlled through the
USB port of a Windows® XP (SP2 or later) or Vista (32-bit)
based PC using the AD5781 evaluation software.
DEVICE DESCRIPTION
The AD5781 is a high precision, 18-bit digital-to-analog con-
verter (DAC), designed to meet the requirements of precision
control applications. The output range of the AD5781 is confi-
gured by two reference voltage inputs. The device is specified to
operate with a dual power supply of up to 33 V.
Complete specifications for the AD5781 are available in the
AD5781 data sheet available from Analog Devices and should
be consulted in conjunction with this user guide when using the
evaluation board.
FUNCTIONAL BLOCK DIAGRAM
POWER SUPPLY INPUTS
SYSTEM DEVELOPMENT
PLATFORM BOARD
PIN HEADER (J6)
PC
USB
PORT
AD5781
POSITIVE
REFERENCE
NEGATIVE
REFERENCE
V
OUT
0
90
92
-0
01
Figure 1.
