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Evaluation Board User Guide
UG-256
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 with Integrated
Precision Reference Buffer Amplifiers
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. A | Page 1 of 20
FEATURES
Full-featured evaluation board for the AD5780
Link options
PC control in conjunction with Analog Devices, Inc., system
development platform
PC software for control
EVALUATION BOARD DESCRIPTION
The EVAL-AD5780 is a full-featured evaluation board, designed
to allow the user to easily evaluate all features of the AD5780
voltage output, 18-bit digital-to-analog converter (DAC). The
AD5780 pins are accessible at on-board connectors for external
connection. The board can be controlled by two means: via the
on-board connector (J3), or via the system development platform
connector (J4). The SDP board allows the evaluation board to be
controlled through the USB port of a Windows® XP- (SP2 or later)
or Vista-based (32-bit) PC using the AD5780 evaluation software.
DEVICE DESCRIPTION
The AD5780 is a high precision, 18-bit DAC with integrated
precision reference buffer amplifiers designed to meet the
requirements of precision control applications. The output
range of the AD5780 is configured 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 AD5780 are provided in the
AD5780 data sheet, available from Analog Devices, and should
be consulted in conjunction with this user guide when using the
evaluation board.
FUNCTIONAL BLOCK DIAGRAM
AD5780
AD8675
INV
EXT
+10V
+5V
–5V
–10V
0V
EXT
R
FB
V
REFP
V
OUT_BUF
V
OUT
09726-001
V
REFN
V
OUT
PIN HEADER (J3)
SYSTEM
DEVELOPMENT
PLATFORM BOARD
PC
USB
PORT
POWER SUPPLY INPUTS
Figure 1.
