Evaluation Board User Guide
UG-286
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 AD5545 Current Output/Serial Input DAC
FEATURES
A double-buffered serial data interface offers high speed,
3-wire, SPI-compatible, and microcontroller-compatible inputs
using serial data in (SDI), chip select (CS), and clock (CLK)
signals. 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 AD5545
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 AD5545 is packaged in the compact 16-lead TSSOP.
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 AD5545 is completed using the EVALSDP-CB1Z Blackfin®-based demonstration board.
GENERAL DESCRIPTION
The AD5545 dual, 16-bit, current output, digital-to-analog
converter (DAC) designed to operate from a single 5 V supply.
The applied external reference input voltage (VREF) determines
the full-scale output current. Integrated feedback resistors (RFB)
provide temperature-tracking, full-scale voltage outputs when
combined with an external I-to-V precision amplifier.
FUNCTIONAL BLOCK DIAGRAM
EVAL-SDP-CB1Z
ADR01
REFERENCE
VREF
IOUTA
LDAC
GPIO
RS
AD8065
I-TO-V
VOUTA1
AD5545
MSB
CS
USB
CLK
SDI
Figure 1.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
AD8065
I-TO-V
VOUTB1
09901-001
SPORT
IOUTB
Rev. B | Page 1 of 12
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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
Changes to General Description .................................................... 1
2/12—Rev. 0 to Rev. A
Replaced Evaluation Board Schematics and Artwork Section ... 5
8/11—Revision 0: Initial Version
Rev. B | Page 2 of 12
Evaluation Board User Guide
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09901-002
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, follow these steps:
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
EV-AD5544/45SDZ 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 the 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/
EV-AD5544_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.
09901-003
1.
1.
Figure 3.
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Evaluation Board User Guide
USING THE EVALUATION BOARD SOFTWARE
Once the software is launched, the main window pops up (see
Figure 4).
There are two modes for loading the data. The first one is
synchronous mode where you can program each channel
separately but update them simultaneously. Program LDAC
high, load the channels and finally pull LDAC low. The asynchronous 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
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
09901-004
VOUT = −VREF ×
D
16,384
= −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
Figure 4. Main Window
The first step is to select the device to use which is connected
to the SDP board, in this case the AD5545, and click the OK
button.
09901-005
After selecting the device, the AD5545 evaluation software
window appears (see Figure 5) to allow writing on the device.
Figure 5. AD5545 Evaluation Software Window
The desired 16-bit data loads and updates one of the four DACs
selected by the user within the AD5545 part.
Rev. B | Page 4 of 12
VOUT = −VREF ×
49,152
D
= −7.5 V
= −10 ×
65,536
65,536
Rev. B | Page 5 of 12
14
MSB
AGNDA
IOUT A
RFBA
AGNDB
IOUT B
VDD
RFBB
C29
DGND
VREFA
MSB DGND VREFB
RS
LDAC
CS
SDIN
SCLK
U2
AD5545 CRUZ
10
/RS
11
/CS
15
9
SDIN
/LDAC
16
/RS1 MSB1
SDIN1 /CS1
SCLK
/LDAC1
SCLK1
C27
DVDD
+
VDD
U4
2
7
VREFA
VREFB
3
4
C9
5.6pF
VSS
VDD
C38
C31
10uF
C12
6
6
C11
10uF
C39
4
VAD806 5
+ V+
7
4
VAD806 5
V+
+
7
-
2
DGND
U1
3
2
3
1
5
6
8
0.1uF
10uF
VSS
+
C13
C26
C10
0.1uF
10uF
0.1uF
+
0.1uF
10uF
0.1uF
+
13
12
Figure 6. EV-AD5544/45SDZ Schematic Part A
+
C14
5.6pF
VOUTA1
J3
VOUT A1
J5
VOUT B1
VOUTB1
Evaluation Board User Guide
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EVALUATION BOARD SCHEMATICS AND ARTWORK
09901-006
60
BMODE1
59 RESET_IN
UART_TX
58 UART_RX
GND
57 GND
NC
56 NC
SDP
NC
NC
55
STANDARD
NC
54 NC
CONNECTOR
NC
53 NC
NC
52 NC
GND
GND
51
NC
NC
50
NC
49 NC
*
TMR_D
48 TMR_C
TIMERS
TMR_B
47 TMR_A
GPIO7
46 GPIO6
GND
GND
45
GENERAL
GPIO4
GPIO5
MSB
44
INPUT/OUTPUT
GPIO3
43 GPIO2
GPIO1
/LDAC
42 GPIO0
SCL_0
41 SCL_1
I2C
SDA_1
SDA_0
40
GND
GND
39
SPI_CLK
38 SPI_SEL1/SPI_SS
SPI_MISO
37 SPI_SEL_C
SPI
SPI_MOSI
36 SPI_SEL_B
GND
SPI_SEL_A
35
GND
34 SPORT_INT *
SPORT_TSCLK
33 SPORT_DT3 *
SPORT_DT0
32 SPORT_DT2
SPORT
SPORT_TFS
31 SPORT_DT1
SPORT_DR1
SPORT_RFS
30
*
SPORT_DR2
SPORT_DR0
29
*
SPORT_RSCLK
28 SPORT_DR3
GND
GND
27
PAR_CLK
26 PAR_FS1
PAR_FS3
PAR_FS2
25
PAR_A0
24 PAR_A1
PAR_A2
23 PAR_A3
GND
22 GND
PAR_INT
21 PAR_CS
PAR_RD
PAR_WR
20
PAR_D0
19 PAR_D1
PARALLEL
PAR_D2
18 PAR_D3
PORT
PAR_D4
17 PAR_D5
GND
16 GND
PAR_D6
15 PAR_D7
PAR_D9
PAR_D8
14
PAR_D10
13 PAR_D11
PAR_D12
12 PAR_D13
GND
11 PAR_D14
GND
PAR_D15
10
* PAR_D16
*
PAR_D17
9
* PAR_D18
*
8 PAR_D19 *
USB_VBUS
* PAR_D20
7 PAR_D21 *
* PAR_D22
PAR_D23
6
GND
5 GND
VIO(+3.3V)
4 USB_VBUS
GND
3 GND
GND
2 GND
NC
1 NC
VIN: Use this pin to power the SDP requires 4-7V 200mA
*NC
on
BLACKFIN
SDP
VIN
NC
J11
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
/RS
U10
8
VCC 7
WP 6
SCL 5
SDA
24LC64
1
2 A0
3 A1
4 A2
VSS
Figure 7. EV-AD5544/45SDZ Schematic Part B
Rev. B | Page 6 of 12
VIO: USE to set IO voltage max draw 20mA
3.3V_BF
SDO
SCLK
SDIN
/CS
I2C bus 1 is common across both connectors on SDP - Pull up resistors required
(connected to blackfin GPIO - use I2C_0 first)
Main I2C bus (Connected to blackfin TWI - Pull up resistors not required)
3.3V_BF
Board ID EEPROM (24LC64) must be on I2C bus 0, address is at user discretion
BMODE1: Pull up with a 10K resistor to set SDP to boot from a SPI FLASH on the daughter board
UG-286
Evaluation Board User Guide
09901-007
J4-2
J4-1
J1-3
J1-2
10uF
C18
+
VDD
0.1uF
C19
C3
0.1uF
C2
0.1uF
C1
0.1uF
5
3
C6
10uF
C5
10uF
DVDD
VSS
2
VOUT
TRIM
GND
+VIN
4
U3 ADR01BKSZ
+
+
C4
10uF
LK2
0.1uF
C20
D
C
B
A
5
MSB
VREFA VREFB VREFC VREFD
6
/RS
U5
MSB
RS
LDAC
SDO
CS
SDIN
SCLK
22
1
2
4
14
13
11
15
16
18
28
27
25
0.1uF
10uF
DGND
3
VREFA
12
VREFB
17
VREFC
26
VREFD
AGNDA
IOUTA
RFBA
AGNDB
IOUTB
RFBB
AGNDC
IOUTC
RFBC
AGNDD
IOUTD
RFBD
C17
AD5544
VDD
AGNDF
23
NC
19
NC1
21
20
SDO
/LDAC
8
/CS
10
MSB
SDO
SDIN
/RS
/CS
9
/LDAC
SDIN
SCLK
SCLK
C16
DVDD
+
VREFA
VREFB
+
-
3
2
VDD
U7
C21
1.8pF
+
-
V+
7
C48
6
0.1uF
+
C50
0.1uF
V+
7
4
V-
C24
C23
10uF
C51
C25
C22
10uF
AD8065
C49
10uF
4
V-
VSS
VDD
U6
3
2
VSS
+
+
C47
1.8pF
0.1uF
10uF
AD8065
6
0.1uF
VOUTA
J16
VOUT D
VOUTD
J13
VOUT A
VDD
U8
3
2
C28
1.8pF
+
-
+
-
VSS
VDD
U9
3
2
VSS
C35
1.8pF
C45
C46
V+
7
4
V-
C36
6
0.1uF
C30
0.1uF
10uF
AD8065
6
0.1uF
C33
C34
0.1uF
10uF
AD8065
C32
10uF
V+
7
4
V-
C44
10uF
+
VDD
+
+
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
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09901-008
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Evaluation Board User Guide
09901-009
EVALUATION BOARD LAYOUT
09901-010
Figure 9. Silkscreen
Figure 10. Component Side
Rev. B | Page 8 of 12
UG-286
09901-011
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 10.0V Voltage Reference
Product Page, AD8065 High Performance, 145 MHz FastFET™ Op Amp
Product Page, System Demonstration Platform
Rev. B | Page 9 of 12
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Evaluation Board User Guide
NOTES
Rev. B | Page 10 of 12
Evaluation Board User Guide
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NOTES
Rev. B | Page 11 of 12
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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.
UG09901-0-5/13(B)
Rev. B | Page 12 of 12