Evaluation Board User Guide
UG-215
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 AD5543 Current Output/Serial Input DAC
FEATURES
The applied external reference, VREF, determines the full-scale
output current. An internal feedback resistor (RFB) facilitates
the R-2R and temperature tracking for voltage conversion when
combined with an external op amp.
Full-featured evaluation board for the AD5543
Graphic user interface software for board control and data
analysis
Connector to EVAL-SDP-CB1Z system development platform
board
Various power supply options
A serial data interface offers high speed, 3-wire, microcontrollercompatible inputs using serial data input (SDI), clock (CLK),
and chip select (CS).
APPLICATIONS
The AD5543 is packaged in ultracompact (3 mm × 4.7 mm)
8-lead MSOP and 8-lead SOIC packages.
Automatic test equipment
Instrumentation
Digitally controlled calibration
Industrial control PLCs
The EVAL-AD5543/53SDZ board is used in conjunction with
the EVAL-SDP-CB1Z system development platform (SDP) board
available from Analog Devices, Inc., which is purchased separately from the evaluation board. The USB-to-SPI communication
to the AD5543 is completed using this Blackfin®-based development board. The software offers a waveform generator.
GENERAL DESCRIPTION
The AD5543 is a precision, 16-bit, low power, current output,
small form factor, digital-to-analog converter (DAC). It is
designed to operate from a single 5 V supply with a ±10 V
multiplying reference.
The EVAL-AD5543/53SDZ can also be used for the AD5553 by
changing the number of bits written (14 bits) in the input.
CONNECTOR TO EVAL-SDP-CB1Z
FUNCTIONAL BLOCK DIAGRAM
DVDD
DGND
VSS
AGND
AD5543/AD5553
AD8065
16-/14-BIT DAC
I-TO-V
VOUT
ADR435
SDIN SCLK
VREF
Figure 1.
Rev. A | Page 1 of 12
09485-001
REFERENCE
CS
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
VDD
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Evaluation Board User Guide
TABLE OF CONTENTS
Features .............................................................................................. 1
Evaluation Board Software ...............................................................3
Applications ....................................................................................... 1
Quick Start Procedure ..................................................................3
General Description ......................................................................... 1
AD5543 Evaluation Software Window ......................................4
Functional Block Diagram .............................................................. 1
Evaluation Board Schematics and Artwork ...................................7
Revision History ............................................................................... 2
Evaluation Board Layout ..............................................................9
REVISION HISTORY
2/12—Rev. 0 to Rev. A
Changes to Level Set Section........................................................... 4
Replaced Evaluation Board Schematics and Artwork Section ... 7
11/10—Revision 0: Initial Version
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EVALUATION BOARD SOFTWARE
3.
QUICK START PROCEDURE
To get started, do the following:
Load and install the software CD.
Plug in the SDP board. The Found New Hardware Wizard
dialog box opens, which allows you to install the software
automatically.
4.
5.
09485-002
1.
2.
Load the software for the SDP board. Click the Start
button on the bottom left corner of your screen, then All
Programs, then AD5543, and finally select the
SDP32NET executable for the SDP board.
Connect the SDP board to the AD5543 evaluation board,
and plug in the external power supply.
Load the AD5543 software. Click Start, then All
Programs, then Analog Devices, and finally AD5543.
Figure 2. AD5543 Evaluation Software
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Evaluation Board User Guide
•
AD5543 EVALUATION SOFTWARE WINDOW
LEVEL SET
The LEVEL SET section in the AD5543 evaluation software
allows you to choose the amplitude for the waveform depending
on the code entered in the Input Data box. Click the Write To
DAC button to load the code. Being a 16-Bit DAC, the relationship between the code entered and the voltage in the output is
as follows:
VOUT = (
D
− 1) × V REF
2N
•
Data Loaded to DAC: the array contains the value of every
code where the waveform has been sampled.
The graph shows each of the points contained in the array.
Example 1
1.
2.
3.
4.
5.
where:
N = 16 bits.
VREF = 5 V.
D is the code introduced in decimal (0 to 32,767).
Power on the board.
Start up the software.
Select the default 30 MHz clock frequency.
Select a waveform frequency of 500 Hz and Sine Wave as
the signal type to show (dc signal is the default).
Select a sampling frequency of 20 kHz and 80 for the
number of samples.
Number of Points Sampled =
Number of Periods =
Waveform Generation
20,000 Hz
500 Hz
= 40
80
=2
40
The WAVEFORM GENERATION section allows you to
control the different frequencies and features in the waveform
generation, including
6.
7.
•
•
•
The waveform obtained from the values entered shows two
periods and the 40 samples per period (see Figure 3). The code
of each sample is loaded in the array on the right side.
•
SCLK: clock input frequency (30 MHz default value).
Waveform Frequency (Fo).
Signal Type: dc signal (default), sawtooth, sine, triangle,
and square wave options.
Sampling Information includes the two following features:
• Sampling Frequency (Fs): to avoid the aliasing effect,
it is necessary to choose a frequency that is at least
twice the value of the waveform frequency. The
number of points sampled is calculated as follows:
Number of Points Sampled =
•
Sampling Frequency
Click the STOP button to end the execution of the software.
Example 2
For a sharper waveform, the sampling frequency and the
number of samples must be raised according to the frequency.
The next example (see Figure 4) shows this relationship, where
the sampling frequency value is changed to 1 MHz and the
number of samples is 2000.
Waveform Frequency
Number of Samples (s): this constant allows you to
show in a graph a determined number of periods
depending on its value. The maximum number of
samples is 32,768.
Number of Periods =
Write the Code FFFF to show full scale.
Click Write To DAC.
Number of samples
Number of Points Sampled
Rev. A | Page 4 of 12
Number of Points Sampled =
Number of Periods =
1,000,000 Hz
2000
=1
2000
500 Hz
= 2000
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Evaluation Board User Guide
Figure 3. Example 1
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Figure 4. Example 2
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EVALUATION BOARD SCHEMATICS AND ARTWORK
DVDD
J1-1
VDD
DAC + Vin for SDP
J1-2
DGND
J1-5
Op-Amp + Reference Supply
J1-4
J1-3
DVDD
VSS
C1
10uF
C2
0.1uF
+
SCLK
SDIN
VOUT
C4
7
VDD
CS
VSS
U1
1
SCLK
2
SDIN
8
CS
SCLK
RFB
SDIN
IOUT
CS
3
C3
5.6pF
5
2
VREF
+
C5
0.1uF
VOUT
J4
U3
-
4
VOP
V+
3
7
+ DIS
8
4
10uF
6
AD5543_53
VDD
VREF
VDD
C8
10uF
+
+VIN
VOUT
LK1
6
U2
ADR435
C9 5 TRIM
0.1uF
GND
C10
C7
0.1uF
VREF
J3
0.1uF
4
AGND
09485-005
2
10uF
+
C6
AGND
6
Figure 5. AD5543 Schematic Part A
Rev. A | Page 7 of 12
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Evaluation Board User Guide
BMODE1: Pull up with a 10K resistor to set SDP to boot from a SPI FLASH on the daughter board
J2
VIN: Use this pin to power the SDP requires 4-7V 200mA
RESET_IN
BMODE1
UART_RX
UART_TX
GND
GND
NC
NC
SDP
NC
NC
STANDARD
NC
NC
CONNE
CTOR
NC
NC
NC
NC
GND
GND
NC
NC
NC
NC
TMR_C *
TMR_D
TIMERS
TMR_A
TMR_B
GPIO6
GPIO7
GND
GND
GENERAL
GPIO4
GPIO5
INPUT/OUTPUT
GPIO2
GPIO3
GPIO0
GPIO1
SCL_1
SCL_0
I2C
SDA_1
SDA_0
GND
GND
SPI_SEL1/SPI_SS
SPI_CLK
SPI_SEL_C
SPI_MISO
SPI
SPI_SEL_B
SPI_MOSI
GND
SPI_SEL_A
SPORT_INT
GND
SPORT_DT3 *
SPORT_TSCLK
SPORT_DT2 *
SPORT_DT0
SPORT
SPORT_DT1
SPORT_TFS
SPORT_DR1
SPORT_RFS
SPORT_DR2 *
SPORT_DR0
SPORT_DR3 *
SPORT_RSCLK
GND
GND
PAR_FS1
PAR_CLK
PAR_FS3
PAR_FS2
PAR_A1
PAR_A0
PAR_A3
PAR_A2
GND
GND
PAR_CS
PAR_INT
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_D13
PAR_D12
PAR_D14
GND
GND
PAR_D15
* PAR_D16
PAR_D17 *
* PAR_D18
PAR_D19 *
* PAR_D20
PAR_D21 *
* PAR_D22
PAR_D23 *
GND
GND
USB_VBUS
VIO(+3.3V)
GND
GND
GND
GND
NC
NC
*NC on BLACKFIN SDP
VIN
NC
61
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102
103
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110
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115
116
117
118
119
120
Figure 6. AD5543 Schematic Part B
Rev. A | Page 8 of 12
Board ID EEPROM (24LC64) must be on I2C bus 0, address is at user discretion
3.3V_BF
1
2 A0
3 A1
4 A2
VSS
U4
8
VCC 7
WP 6
SCL 5
SDA
24LC64
STATUS
START
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
3.3V_BF
VIO: USE to set IO voltage max draw 20mA
09485-006
USB_VBUS
60
59
58
57
56
55
54
53
52
51
50
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47
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1
Evaluation Board User Guide
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09485-007
EVALUATION BOARD LAYOUT
09485-008
Figure 7. Silkscreen Top
09485-009
Figure 8. Top Side
Figure 9. Bottom Side
Rev. A | Page 9 of 12
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Evaluation Board User Guide
RELATED LINKS
Resource
AD5543
AD5553
ADR435
AD8065
Description
Product Page, AD5543 16-Bit DAC in µSOIC-8 Package
Product Page, AD5553 14-Bit DAC in µSOIC-8 Package
Product Page, ADR435 Ultralow Noise XFET® Voltage References with Current Sink and Source Capability
Product Page, AD8065 High Performance, 145 MHz FastFET™ Op Amp
Rev. A | Page 10 of 12
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NOTES
Rev. A | 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.
©2010–2012 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
UG09485-0-2/12(A)
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