EVAL-AD5666SDZ User Guide
UG-619
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 AD5666, Quad, 16-Bit, Buffered Voltage-Output DAC
Rev. 0 | Page 1 of 12
FEATURES
Full featured evaluation board for the AD5666
On-board reference
Various link options
PC control in conjunction with Analog Devices, Inc., system
demonstration platform (SDP)
PC software for control of DAC
EVALUATION KIT CONTENTS
EVAL-AD5666SDZ evaluation board
AD5666 device
CD that includes
Self-installing software that allows users to control the
board and exercise all functions of the device
Electronic version of the AD5666 data sheet
ADDITIONAL EQUIPMENT NEEDED
EVAL-SDP-CS1Z system demonstration platform
PC with Windows XP, Windows Vista (64-bit/32-bit), or
Windows 7 (64-bit/32-bit) operating system
GENERAL DESCRIPTION
The Analog Devices, Inc., AD5666 evaluation board (EVA L -
AD5666SDZ) is designed to help customers quickly prototype
new AD5666 circuits and reduce design time. The AD5666 operates
from a single supply. The board populates the AD5666BRUZ-2,
which has a 2.5 V, 5 ppm/°C reference, giving a full-scale output
of 5 V. Additionally, the board populates 2.5 V and 5 V external
references, giving a full-scale output of 2.5 V and 5 V, respectively.
Full data on the AD5666 can be found in the AD5666 data
sheet, which should be consulted in conjunction with this
document when using the evaluation board.
The evaluation board interfaces to the PC via the SDP board.
Software is included in the evaluation board kit that allows you
to easily program the AD5666.
PHOTOGRAPH OF THE EVALUATION BOARD
Figure 1.
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TABLE OF CONTENTS
Features .............................................................................................. 1
Evaluation Kit Contents ................................................................... 1
Additional Equipment Needed ....................................................... 1
General Description ......................................................................... 1
Photograph of the Evaluation Board .............................................. 1
Revision History ............................................................................... 2
Evaluation Board Hardware ............................................................ 3
Power Supplies .............................................................................. 3
Link Options ..................................................................................3
Evaluation Board Software ...............................................................4
Installing the Software ..................................................................4
Running the Software ...................................................................4
Operating the Software .................................................................5
Evaluation Board Schematics and Artwork ...................................7
Bill of Materials ............................................................................... 10
REVISION HISTORY
11/13—Revision 0: Initial Version
EVAL-AD5666SDZ User Guide UG-619
Rev. 0 | Page 3 of 12
EVALUATION BOARD HARDWARE
POWER SUPPLIES
The AD5666 evaluation board can be powered either from the
on-board regulator of 3.3 V or externally by the J14-1 and J14-2
connectors, as described in Table 1.
Only an AGND connector is provided on the board. The
AGND and DGND planes are connected at one point under the
AD5666 device. It is recommended not to connect AGND and
DGND elsewhere in the system to avoid ground loop problems.
The supply is decoupled to ground with 10 µF tantalum and
0.1 µF ceramic capacitors.
Table 1. Power Supply Connectors
Connector No. Name Voltage
J14-1 +5.5V From 2.7 V to 5.5 V
J14-2
GND
AGND
LINK OPTIONS
Before using the evaluation board, the link options must be set
for the desired operating mode (see Table 2 for more information).
By default, the evaluation board is set up to be controlled by a
PC via the USB port and SDP board.
Table 2. Link Functions
Link No. Option Default Position
LK1 This link selects the main board voltage source. B
Position A selects the regulated voltage from the USB voltage source, 3.3 V.
Position B selects the external supply voltage provided by the J14 connector.
LK2 This link selects the DAC voltage reference. C
Position A selects the REF195 external reference. This reference is operational only if the board is powered
externally with a voltage higher than 5.1 V.
Position B selects an off-board reference.
Position C selects the REF192 external reference.
LK7 This link selects the supply voltage for the AD5666. B
Position A selects the source selected by LK1.
Position B selects the source selected by LK2.
LK8 This link adds an external capacitor on the AD5666 VREF voltage. Inserted
Inserted selects the capacitor to be connected.
Disconnected selects the capacitor to be disconnected.
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EVALUATION BOARD SOFTWARE
INSTALLING THE SOFTWARE
The E VA L -AD5666SDZ kit includes self-installing software on a
CD. The software is compatible with Windows® XP, Windows
Vista (64-bit/32-bit), and Windows 7 (64-bit/32-bit).
Install the software before connecting the SDP board to the USB
port of the PC. This ensures that the SDP board is recognized
when it is connected to the PC.
1. Start the Windows operating system and insert the CD.
2. The installation software should open automatically. If it
does not, run the setup.exe file from the CD.
3. After installation is completed, power up the evaluation
board as described in the Power Supplies section.
4. Plug the E VA L -AD5666SDZ into the SDP board and the
SDP board into the PC using the USB cable included in the
evaluation board kit.
5. When the software detects the evaluation board, proceed
through any dialog boxes that appear to finalize the
installation.
RUNNING THE SOFTWARE
To run the program, do the following:
1. Click Start > All Programs > Analog Devices > AD5666>
AD5666 Evaluation Software. (To uninstall the program,
click Start > Control Panel > Add or Remove Programs >
AD5666 Evaluation Software.)
2. If the SDP board is not connected to the USB port when
the software is launched, a connectivity error is displayed
(see Figure 2). If a connectivity error is displayed, connect
the evaluation board to the USB port of the PC and wait a
few seconds, and then click Rescan and follow the
instructions.
Figure 2. SDP Board to USB Port Connectivity Error Message
3. If the SDP board is not connected to the evaluation board,
a message box appears as shown in Figure 3. Check the
connection between the SDP and E VA L-AD5666SDZ
boards and then run the program again.
Figure 3. SDP Board to Evaluation Board Error Message
4. When the SDP board is connected, a wait window is
displayed briefly (see Figure 4), and then the main window
of the AD5666 evaluation software opens, as shown in
Figure 5.
Figure 4. System Development Platform Wait Window
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OPERATING THE SOFTWARE
To run the AD5666 GUI, click Start > All Programs > Analog
Devices > AD5666 > AD5666 Evaluation Software.
The AD5666 main window opens, as shown in Figure 5.
The DAC Controls tab (see Figure 5) allows you to view the
input register, DAC register, and output voltage (VOUTA to
VOUTD). On the left side of the window, you can type a
hexadecimal value into the INPUT VALUE (Hex) box to be
written to the input and/or DAC registers as follows:
• Click Write to Input Register to write the value to the
input register. This updates only the input register; the
DAC register is not updated.
• Click Update DAC Register from Input Register to
update the DAC register.
• Click Write to DAC Channel to simultaneously write to
the input register and update the DAC register.
The DAC Registers tab (see Figure 6) allows you to access the
clear code register, reset register, internal reference register,
LDAC register, and power-down register. Therefore, this tab
allows you to change the parameters of the device and how the
device performs.
Hardware Pins
To set the LDAC and CLR pins to high or low, click the
appropriate check box under the block diagram in the main
window. This command is executed immediately.
Figure 5. AD5666 Evaluation Board Main Window, DAC Controls Tab
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Figure 9. Schematic of SDP Connector
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Figure 10. Component Placement Drawing
Figure 11. Component Side PCB Drawing
Figure 12. Solder Side PCB Drawing
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BILL OF MATERIALS
Table 3. EVAL-AD5666SDZ Bill of Materials
Qty Reference Designator Description Supplier/Part Number
3 C18, C19, C20 Capacitor, 0603, 100 V, 100 pF Farnell 1740605
4 C6, C7, C9, C21 Capacitor, 0603, 25 V, 0.1 µF Farnell 1828899
2 C11, C12 Capacitor, 0603, 1 µF, 16 V Farnell 1658870
2 C9, C16 Capacitor, 0603, 10 µF, 10 V Farnell 1853538
4 R8, R9, R10, R17 Resistor, 0603, 33 Ω Farnell 9331050
1 R13 Resistor, 0603, 0 Ω Farnell 9331662
5 EXT_REF, VOUTA, VOUTB, VOUTC, VOUTD SMB connector Farnell 1206013
1 J1 120-way connector Farnell 1324660
1 J14 2-pin terminal block Farnell 151789
2 LK1, LK2 3-pin connector Farnell 1022249 and Farnell 150411
1 LK7 3-pin connector Farnell 1022248 and Farnell 150410
1 LK8 3-pin connector Farnell 1022247 and Farnell 150411
4 TPA, TPB, TPC, TPD Test point Farnell 8731144
1 U1 32k I2C serial EEPROM Farnell 1331330
1 U2 Quad, 16-bit DAC AD5666BRUZ-2
1 U3 3.3 V regulator ADP121-AUJZ33R7
1
U4
2.5 V reference
REF192GSZ
1
U6
5 V reference
REF195ESZ
2 Screw1, Screw2 SDP screw Farnell 7070597
2 Nut1, Nut2 SDP nut Farnell 7061857
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NOTES
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NOTES
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection
circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.
Legal Terms and Conditions
By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions
set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you
have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc.
(“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal,
temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FO
R EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided
for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional
limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term
“Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including
ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may
not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to
promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any
occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board.
Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMI
NATION. ADI may terminate this Agreement at any time upon giving written notice
to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO
WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED
TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL
PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF
THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE
AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable
United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of
Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby
submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.
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