Evaluation Board User Guide
UG-285
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 AD5544 Current Output/Serial Input DAC
FEATURES
A double-buffered serial data interface offers high speed, 3-wire,
SPI- and microcontroller-compatible inputs using serial data in
(SDI), chip select (CS), and clock (CLK) signals. In addition, a
serial data out pin (SDO) allows for daisy-chaining when
multiple packages are used. A common, level-sensitive, load
DAC strobe (LDAC) input allows the simultaneous update of
all DAC outputs from previously loaded input registers.
Additionally, an internal power-on reset forces the output
voltage to 0 at system turn on. An MSB pin allows system reset
assertion (RS) to force all registers to zero code when MSB = 0
or to half-scale code when MSB = 1.
Full-featured evaluation board for the AD5544
Graphic user interface software for board control and data
analysis
Connector to EVAL-SDP-CB1Z system demonstration
platform board
Various power supply options
APPLICATIONS
Automatic test equipment
Instrumentation
Digitally controlled calibration
The AD5544 is packaged in a compact 28-lead SSOP.
GENERAL DESCRIPTION
The EV-AD5544/45SDZ board is used in conjunction with the
EVAL-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 AD5544 is completed using this
Blackfin®-based demonstration board. The software offers a
waveform generator.
The AD5544 quad, 16-bit, current output, digital-to-analog
converter (DAC) is designed to operate in a 2.7 V to 5.5 V
supply range. But this voltage is limited up to 3.3 V due to
EVAL-SDP-CB1Z restrictions.
The applied external reference input voltage (VREFx) determines
the full-scale output current. Integrated feedback resistors
(RFBx) provide temperature-tracking, full-scale voltage outputs
when combined with an external I-to-V precision amplifier.
FUNCTIONAL BLOCK DIAGRAM
ADR01
EVAL-SDP-CB1Z
REFERENCE
VREF x
IOUTA
LDAC
GPIO
RS
AD8065
I-TO-V
VOUTA
AD5544
MSB
IOUTD
CS
USB
SCLK
SDIN
SDO
Figure 1.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
I-TO-V
VOUTD
09900-001
SPORT
AD8065
Rev. B | Page 1 of 12
UG-285
Evaluation Board User Guide
TABLE OF CONTENTS
Features .............................................................................................. 1
Running the Software ...................................................................3
Applications ....................................................................................... 1
Using the Evaluation Board Software .............................................4
General Description ......................................................................... 1
Example ..........................................................................................4
Functional Block Diagram .............................................................. 1
Evaluation Board Schematics and Artwork ...................................5
Revision History ............................................................................... 2
Evaluation Board Layout ..............................................................8
Evaluation Board Software .............................................................. 3
Related Links ......................................................................................9
Installing the Software ................................................................. 3
REVISION HISTORY
5/13—Rev. A to Rev. B
Changed EVAL-AD5544/45SDZ to EV-AD5544/45SDZ
............................................................................................................Universal
5/12—Rev. 0 to Rev. A
Changes to General Description Section ...................................... 1
Changes to Figure 2 .......................................................................... 3
Changes to Evaluation Board Schematics and Artwork Section ... 5
5/11—Revision 0: Initial Version
Rev. B | Page 2 of 12
Evaluation Board User Guide
UG-285
09900-002
EVALUATION BOARD SOFTWARE
Figure 2. Device Manager Showing the SDP Board Connected
INSTALLING THE SOFTWARE
RUNNING THE SOFTWARE
The EV-AD5544/45SDZ evaluation kit includes the software and
drivers on CD. To install the software, do the following:
To run the evaluation board program, do the following:
2.
3.
4.
5.
Install the software before connecting the SDP board to the
USB port of the PC.
Start the Windows® operating system and insert the EVAD5544/45SDZ evaluation kit CD.
Download the EV-AD5544/45SDZ LabVIEW™ software.
The correct driver, SDPDriversNET, for the SDP board
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.
After installation of the software and drivers is complete, plug
the EV-AD5544/45SDZ into the SDP board and the SDP
board into the PC using the USB cable included in the box.
When the software detects the evaluation board, proceed
through any dialog boxes that appear to finalize the
installation (Found New Hardware Wizard/Install the
Software Automatically and so on).
2.
Rev. B | Page 3 of 12
Click Start/All Programs/Analog Devices/EVAD5544/45SDZ.
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.
09900-003
1.
1.
Figure 3.
UG-285
Evaluation Board User Guide
USING THE EVALUATION BOARD SOFTWARE
Once the software is launched, the main window pops up (see
Figure 4).
The desired 16-bit data loads and updates one of the four DACs
that you selected within the AD5544 part.
There are two modes for loading the data. Synchronous mode
enables you to program each channel separately and update
them simultaneously. Program LDAC high, load the channels,
and finally pull LDAC low. Asynch-ronous mode enables you
to load and update each channel separately (the LDAC button
is ignored in this case).
The reset button, RS, updates all channel outputs to zero scale
or midscale when MSB is pulled low or high.
EXAMPLE
09900-004
With LDAC and RS tied high for asynchronous loading mode,
specify quarter scale (0x4000, 16384d) in the Input Data box
and click Load and Update DAC A. The expected output
obtained is
Figure 4. Main Window
The first step is to select the device to use that is connected
to the SDP board, in this case the AD5544, and click OK.
VOUT = −VREF ×
16,384
D
= −10 ×
= −2.5 V
65,536
65,536
When you change the loading synchronism mode to synchronous and write the value 0xC000 (49152d), you see no change
in the output until LDAC is tied low. The expected output for
this case is
After selecting the device, the AD5544 evaluation software
window appears (see Figure 5) to start writing to the device.
09900-005
VOUT = −VREF ×
Figure 5. AD5544 Evaluation Software Window
Rev. B | Page 4 of 12
49,152
D
= −10 ×
= −7.5 V
65,536
65,536
Rev. B | Page 5 of 12
VREFA
VREFB
C9
5.6pF
VSS
10
/RS
MSB
RS
AD5545CRUZ
15
/LDAC
DGND
AGNDA
IOUTA
VDD
U4
1
5
6
2
VREFA 7
14
MSB DGND VREFB
RFBA
AGNDB
IOUTB
8
VDD
U1
4
C38
7
6
C11
10uF
C39
C12
4
VAD8065
V+
+
7
C31
10uF
VAD8065
V+
+
-
3
LDAC
CS
RFBB
DGND
3
2
4
/CS
SDIN
VDD
0.1uF
10uF
2
11
SCLK
U2
13
3
9
SDIN
/RS1 MSB1
16
SCLK
/LDAC1
SCLK1 SDIN1 /CS1
C29
+
C27
C14
5.6pF
+
DVDD
12
Figure 6. EV-AD5544/45SDZ Schematic Part A
C13
+
C26
6
C10
0.1uF
10uF
0.1uF
+
0.1uF
10uF
0.1uF
+
VSS
J3
VOUT A1
VOUTA1
J5
VOUT B1
VOUTB1
Evaluation Board User Guide
UG-285
EVALUATION BOARD SCHEMATICS AND ARTWORK
SCHEMATICS
09900-006
UG-285
Evaluation Board User Guide
BMODE1: Pull up with a 10K resistor to set SDP to boot from a SPI FLASH on the daughter board
J11
/LDAC
USB_VBUS
RESET_IN
BMODE1
UART_RX
UART_TX
GND
GND
NC
NC
SDP
NC
NC
STANDARD
NC
NC
CONNECTOR
NC
NC
NC
NC
GND
GND
NC
NC
NC
NC
*
TMR_D
TMR_C
TIMERS
TMR_B
TMR_A
GPIO7
GPIO6
GND
GND
GENERAL
GPIO5
GPIO4
INPUT/OUTPUT
GPIO3
GPIO2
GPIO1
GPIO0
SCL_0
SCL_1
I2C
SDA_0
SDA_1
GND
GND
SPI_CLK
SPI_SEL1/SPI_SS
SPI_MISO
SPI_SEL_C
SPI
SPI_MOSI
SPI_SEL_B
SPI_SEL_A
GND
GND
SPORT_INT
SPORT_TSCLK
SPORT_DT3 *
SPORT_DT0
SPORT_DT2 *
SPORT
SPORT_TFS
SPORT_DT1
SPORT_RFS
SPORT_DR1
*
SPORT_DR0
SPORT_DR2
SPORT_RSCLK
SPORT_DR3 *
GND
GND
PAR_CLK
PAR_FS1
PAR_FS2
PAR_FS3
PAR_A0
PAR_A1
PAR_A2
PAR_A3
GND
GND
PAR_INT
PAR_CS
PAR_RD
PAR_WR
PAR_D1
PAR_D0
PARALLEL
PAR_D3
PAR_D2
PORT
PAR_D5
PAR_D4
GND
GND
PAR_D7
PAR_D6
PAR_D9
PAR_D8
PAR_D11
PAR_D10
PAR_D12
PAR_D13
GND
PAR_D14
PAR_D15
GND
* PAR_D16
PAR_D17 *
* PAR_D18
PAR_D19 *
* PAR_D20
PAR_D21 *
*
* PAR_D22
PAR_D23
GND
GND
VIO(+3.3V)
USB_VBUS
GND
GND
GND
GND
NC
NC
*NC on BLACKFIN SDP
NC
VIN
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
Board ID EEPROM (24LC64) must be on I2C bus 0, address is at user discretion
3.3V_BF
U10
1
2
3
4
A0
A1
A2
VSS
8
VCC
7
WP
6
SCL
5
SDA
24LC64
/RS
Main I2C bus (Connected to blackfin TWI - Pull up resistors not required)
I2C bus 1 is common across both connectors on SDP - Pull up resistors required
(connected to blackfin GPIO - use I2C_0 first)
SCLK
SDIN
/CS
SDO
3.3V_BF
VIO: USE to set IO voltage max draw 20mA
VIN: Use this pin to power the SDP requires 4-7V 200mA
Figure 7. EV-AD5544/45SDZ Schematic Part B
Rev. B | Page 6 of 12
09900-007
MSB
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
J4-2
J4-1
J1-3
J1-2
10uF
C18
+
VDD
0.1uF
C19
C3
0.1uF
C2
0.1uF
5
3
C6
10uF
C5
10uF
DVDD
VSS
2
VOUT
TRIM
GND
+VIN
4
U3 ADR01BKSZ
+
+
LK2
0.1uF
D
C
B
A
MSB
C20
5
VREFAVREFBVREFCVREFD
6
/RS
U5
MSB
RS
22
IOUTD
AGNDB
IOUTB
RFBB
AGNDC
IOUTC
RFBC
AGNDD
VDD
RFBD
C17
1
2
4
14
13
11
15
16
18
28
27
25
0.1uF
10uF
3
VREFA
12
VREFB
17
VREFC
26
VREFD
DGND
AGNDF
AGNDA
IOUTA
RFBA
AD5544
LDAC
SDO
CS
SDIN
SCLK
23
NC
19
NC1
21
/LDAC
8
20
/CS
SDO
10
SDIN
MSB
SDO
9
/RS
/CS
SCLK
/LDAC
SCLK SDIN
C16
DVDD
+
C4
10uF
VREFA
VREFB
C47
1.8pF
+
-
7
3
2
VDD
U7
C21
1.8pF
+
-
6
0.1uF
C50
7
VV+
4
0.1uF
C24
C23
10uF
C51
C25
C22
10uF
AD8065
C49
C48
+
10uF
VV+
4
VSS
VDD
U6
3
2
VSS
+
C1
0.1uF
VDD
0.1uF
10uF
AD8065
6
0.1uF
VOUTA
J16
J13
VOUT A
VOUT D
VOUTD
VDD
U8
3
2
C28
1.8pF
+
-
+
-
VSS
VDD
U9
3
2
VSS
C35
1.8pF
C45
C44
7
C36
6
0.1uF
C30
0.1uF
10uF
AD8065
6
0.1uF
C33
C34
0.1uF
10uF
AD8065
C32
10uF
C46
VV+
4
7
VV+
4
10uF
+
+
+
+
7
24
+
Rev. B | Page 7 of 12
+
Figure 8. EV-AD5544/45SDZ Schematic Part C
+
J1-1
J14
VOUT B
VOUTB
J15
VOUT C
VOUTC
Evaluation Board User Guide
UG-285
09900-008
UG-285
Evaluation Board User Guide
09900-009
EVALUATION BOARD LAYOUT
09900-010
Figure 9. Silkscreen
Figure 10. Component Side
Rev. B | Page 8 of 12
UG-285
09900-011
Evaluation Board User Guide
Figure 11. Solder Side
RELATED LINKS
Resource
AD5545
AD5544
ADR01
AD8065
EVAL-SDP-CB1Z
Description
Product Page, AD5545 Precision Dual 16-Bit DAC in Compact TSSOP Packages
Product Page, AD5544 Quad, Current-Output, Serial-Input 16-Bit DAC
Product Page, ADR01 Ultracompact, Precision 10.0 V Voltage Reference
Product Page, AD8065 High Performance, 145 MHz FastFET™ Op Amp
Product Page, System Demonstration Platform
Rev. B | Page 9 of 12
UG-285
Evaluation Board User Guide
NOTES
Rev. B | Page 10 of 12
Evaluation Board User Guide
UG-285
NOTES
Rev. B | Page 11 of 12
UG-285
Evaluation Board User Guide
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 FOR 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. TERMINATION. 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.
©2011–2013 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
UG09900-0-5/13(B)
Rev. B | Page 12 of 12