ANALOG DEVICES UG-309 Service Manual
Evaluation Board User Guide
UG-309
AD5546 AD8065
LDAC
REF
RS
MSB
I
OUT
WR
V
OUT
I-TO-V
10112-001
D0... D15
GPIO
PARALLEL
PORT
USB
EVAL-SDP-CB1Z
ADR01
REFERENCE
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 AD5546 Current Output/Serial Input DACs
FEATURES
Full-featured evaluation board for the AD5546
Graphic user interface software for board control and data
analysis
Connector to E VAL-SDP-CB1Z system demonstration
platform board
Various power supply options
APPLICATIONS
Automatic test equipment
Instrumentation
Digitally controlled calibration
Digital waveform generation
GENERAL DESCRIPTION
The AD5546 is a precision 16-bit, multiplying, low power,
current output, parallel input digital-to-analog converter (DAC).
FUNCTIONAL BLOCK DIAGRAM
It operates from a single 2.7 V to 5.5 V supply with ±10 V
multiplying references for four-quadrant outputs. Built-in
four-quadrant resistors facilitate the resistance matching and
temperature tracking that minimize the number of components
needed for multiquadrant applications.
The applied external reference input voltage (V
the full-scale output current. The feedback resistor (R
fies the I-to-V conversion with an external buffer.
The AD5546 is packaged in compact 28-lead TSSOP packages
with operating temperatures from –40°C to +125°C.
The E VA L -AD5546SDZ is used in conjunction with the E VA L -
SDP-CB1Z system demonstration platform (SDP) board available
from Analog Devices, Inc., which is purchased separately from
the evaluation board. The USB-to-SPI communication to the DAC
is completed using this Blackfin®-based demonstration board.
) determines
REF
) simpli-
FB
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Figure 1.
Rev. A | Page 1 of 12
UG-309 Evaluation Board User Guide
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Evaluation Board Software .............................................................. 3
Installing the Software ................................................................. 3
Running the Software .................................................................. 3
REVISION HISTORY
3/12—Rev. 0 to Rev. A
Added New Table 1; Renumbered Sequentially ........................... 4
Changes to the Example Section .................................................... 5
Replaced Evaluation Board Schematics and Artwork Section ... 6
11/11—Revision 0: Initial Version
Applications Provided .......................................................................4
Using the Evaluation Board Software .............................................5
Example ..........................................................................................5
Evaluation Board Schematics and Artwork ...................................6
Schematics ......................................................................................6
Evaluation Board Layout ..............................................................8
Related Links ......................................................................................9
Rev. A | Page 2 of 12
Evaluation Board User Guide UG-309
10112-002
10112-003
EVALUATION BOARD SOFTWARE
Figure 2. Device Manager Showing the SDP Board Connected
INSTALLING THE SOFTWARE
The EVAL-AD5546SDZ kit includes the software and drivers on a
CD. To install the software, follow these steps:
1. Install the software before connecting the SDP board to the
USB port of the PC.
2. Start the Windows® operating system and insert the EVAL-
AD5546SDZ CD.
3. Download the E VA L -AD5546SDZ LabVIEW™ software.
The correct driver for the SDP board, SDPDriversNET,
should download automatically after LabVIEW is
downloaded, supporting both 32- and 64-bit systems.
However, if the drivers do not download automatically, the
driver executable file can also be found in the Program
Files/Analog Devices folder. Follow the on-screen prompts
to install it.
4. After installation of the software and drivers is complete, plug
the EVA L -AD5546SDZ into the SDP board and the SDP
board into the PC using the USB cable included in the kit.
5. When the software detects the evaluation board, proceed
through any dialog boxes that appear to finalize the
installation (for example, Found New Hardware Wizard
and Install the Software Automatically).
RUNNING THE SOFTWARE
To run the evaluation board program, do the following:
1. Click Start/All Programs/Analog Devices/EVAL-
AD5546SDZ.
2. If the SDP board is not connected to the USB port when
the software is launched, a connectivity error displays (see
Figure 3). Simply connect the evaluation board to the USB
port of the PC, wait a few seconds, click Rescan, and follow
the instructions.
Figure 3. Connectivity Error
Rev. A | Page 3 of 12
UG-309 Evaluation Board User Guide
APPLICATIONS PROVIDED
The EVAL-AD5546SDZ board provides the possibility of
configuring the DAC in two different unipolar two-quadrant
multiplying modes. Table 1 show how to select the desired
voltage reference. Table 2 shows the connections needed to
obtain these unipolar modes.
Table 1. Voltage Reference Selection
Link Connections
Link No. Position
LK1 IN
OUT
Func tion
Internal voltage reference ADR01
connected.
External voltage reference connected
to VREF (J3 SMB connector).
Table 2. Applications Provided
Link Connections
Link No. Position
LK2 A
LK3 A
Func tion
Unipolar two-quadrant multiplying
mode, V
LK4 In
LK2 B
LK3 B
Unipolar two-quadrant multiplying
mode, V
LK4 Out
= 0 V to −V
OUT
= 0 V to + V
OUT
REF
REF
Rev. A | Page 4 of 12
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