Page 1
Evaluation Board User Guide
UG-384
AD5570
10579-001
AD8675
EXT
+10V
REFIN
PC
USB
PORT
SYSTEM
DEMONSTRATION
PLATFORM BOARD
DGND AGNDS AGND
V
OUT
V
OUT
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 the AD5570
16-Bit ±12 V/±15 V Serial Input Voltage Output DAC
FEATURES
Full-featured evaluation board for the AD5570
Link options
PC control in conjunction with the Analog Devices, Inc.,
system demonstration platform
PC software for control
DEVICE DESCRIPTION
The AD5570 is a single 16-bit serial input, voltage output DAC
that operates from supply voltages of ±11.4 V up to ±16.5 V.
INL and DNL are accurate to 1 LSB (maximum).
Complete specifications for the AD5570 are provided in the
AD5570 data sheet, available from Analog Devices, and should
be consulted in conjunction with this user guide when using the
evaluation board.
EVALUATION BOARD DESCRIPTION
The E VA L -AD5570SDZ is a full-featured evaluation board that
is designed to allow the user to easily evaluate all features of the
AD5570 voltage output, 16-bit digital-to-analog converter (DAC).
Components on the AD5570 evaluation board include SMB
connectors for interfacing to other equipment, a 5 V voltage
reference, and a ground force sense. Testpoints are provided on
all of the digital interface signal lines for ease of monitoring.
The user has the option of inserting both a resistive and
capacitive load on the output of the AD5570 at C1 and R1.
The board can be controlled by the system demonstration
platform (SDP) connector (J1). The SDP board allows the
evaluation board to be controlled through the USB port of a
Windows® XP (SP2 or later) or more recent 32-bit or 64-bit
(Vista, Windows 7) PC using the AD5570 evaluation software.
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 12
Page 2
UG-384 Evaluation Board User Guide
TABLE OF CONTENTS
Features .............................................................................................. 1
Device Description ........................................................................... 1
Evaluation Board Description......................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Evaluation Board Hardware ............................................................ 3
Power Supplies .............................................................................. 3
Link Options ................................................................................. 3
REVISION HISTORY
3/12—Revision 0: Initial Versi on
On-Board Connectors ..................................................................3
Evaluation Board Software ...............................................................4
Software Installation .....................................................................4
Software Operation .......................................................................4
Features of the AD5570 Evaluation Board Software ................5
Evaluation Board Schematics and Artwork ...................................6
Ordering Information .................................................................... 10
Bill of Materials ........................................................................... 10
Rev. 0 | Page 2 of 12
Page 3
Evaluation Board User Guide UG-384
VOUT
DAC output connector
LK1
LK1 is used in conjunction with LK2 to select whether the on-board ground force sense buffer is used.
When LK1 and LK2 are removed, the ground force sense buffer is used.
When LK3 is inserted, the on-board reference is selected as the voltage reference source for the AD5570.
When LK3 is removed, an external voltage reference can be applied to Connector VR EF.
EVALUATION BOARD HARDWARE
POWER SUPPLIES
The following external supplies must be provided:
Default Link Option Setup
The default link options are listed in Table 1.
• +11.4 V to +16.5 V between the V
the positive analog supply of the AD5570.
• −11.4 V to −16.5 V between the V
the negative analog supply of the AD5570.
The analog and digital planes are connected at one location,
and AGND inputs for
DD
and AGND inputs for
SS
Table 1. Default Link Options
Link Number Option
LK1 Inserted
LK2 Inserted
LK3 Inserted
close to the AD5570. To avoid ground loop problems, it is
recommended AGND and DGND not be connected elsewhere
in the system.
Each supply is decoupled to the relevant ground plane with
10 µF and 0.1 µF capacitors. Each device supply pin is also
decoupled with a 10 µF and 0.1 µF capacitor pair to the
relevant ground plane.
LINK OPTIONS
ON-BOARD CONNECTORS
There are four connectors on the AD5570 evaluation board
PCB as outlined in Table 2.
Table 2. On-Board Connectors
Connector Function
J1 SDP board connector
J5 Analog power supply connector
The link options on the evaluation board should be set for the
required operating setup before using the board. The functions
VREF External reference voltage input connector
of the link options are described in Tabl e 3.
Table 3. Link Options
Link No. Description
LK2 When LK1 and LK2 are inserted, the ground force sense buffer is not used, the ground pins are connected directly to 0 V, and
the buffer is removed from the ground loop.
LK3 This link is used to select the internal or the external reference.
Rev. 0 | Page 3 of 12
Page 4
UG-384 Evaluation Board User Guide
10579-002
10579-003
EVALUATION BOARD SOFTWARE
SOFTWARE INSTALLATION
The AD5570 evaluation kit includes self-installing software on
a CD. The software is compatible with Windows XP (SP2), Vista,
and Windows 7 (32-bit or 64-bit). If the setup file does not run
automatically, you can run the setup.exe file from the CD.
Install the evaluation software before connecting the evaluation
board and SDP board to the USB port of the PC to ensure that
the evaluation system is correctly recognized when connected
to the PC.
After installation from the CD is complete,
1. Power up the AD5570 evaluation board as described in the
Power Supplies section. Connect the SDP board (via either
Connector A or Connector B) to the AD5570 evaluation
board and then to the USB port of your PC using the
supplied cable.
2. When the evaluation system is detected, proceed through any
dialog boxes that appear. This completes the installation.
SOFTWARE OPERATION
To launch the software, complete the following steps:
1. From the Start menu, select Analog Devices > AD5570 >
AD5570 Evaluation Software. The main window of the
software opens (see Figure 3).
2. If the evaluation system is not connected to the USB port
when the software is launched, a connectivity error is
displayed (see Figure 2). Connect the evaluation board to
the USB port of the PC, wait a few seconds, click Rescan,
and follow the instructions.
Figure 2. Connectivity Error Alert
Figure 3. Main Window
Rev. 0 | Page 4 of 12
Page 5
Evaluation Board User Guide UG-384
FEATURES OF THE AD5570 EVALUATION BOARD SOFTWARE
The software allows the user to control all the functionality of
the AD5570. The main features are as follows:
• Load DAC register with a 16-bit word and update the
AD5570 output.
• Data readback of the contents of the input shift register.
• Power down/power up the AD5570.
• Clear the AD5570 output to 0 V.
Each of these features is described in the following sections.
Load DAC
In the Input Data field, the user types the 16-bit word to be
programmed to the AD5570 and clicks the WRITE TO DAC
button.
In LDAC synchronous loading mode, the WRITE TO DAC
button writes the required data to the input shift register and
toggles the LDAC signal, which then loads the DAC register
and updates the output voltage.
In LDAC asynchronous loading mode, the WRITE TO DAC
button writes the required data to the input shift register, but
the user toggles the LDAC signal by clicking the LDAC switch
to load the DAC register and update the output voltage.
Data Readback
Clicking the READ REGISTER button reads back and displays
the current contents of the DAC register.
Power Down/Power Up
This function allows the user to place the AD5570 in powerdown mode and to remove the AD5570 from power-down
mode. Clicking the POWER DOWN switch places the AD5570
in power-down mode, at the same time the text on the button
changes to POWER UP, indicating that clicking the button
again removes the AD5570 from power-down mode.
Clear
Clicking the CLEAR switch causes the
AD5570 to be pulsed low, which has the effect of setting the
output voltage to 0 V.
CLR
signal of the
Rev. 0 | Page 5 of 12
Page 6
UG-384 Evaluation Board User Guide
AVDD
AGND
VSS
1
VSS
2
VDD
3
CLR
4
LDAC
5
SYNC
6
SCLK
7
DIN
8
SDO
9
DGND
10
PD
11
AGND
12
AGNDS
13
VOUT
14
REFGND
15
REFIN
16
REFGND
U1
AD5570
R1
C1
VOUT
J5-1
J5-3
J5-2
+
C34
10uF
C35
0.1uF
SCLK
SDO
/LDAC
2
+VIN
5
TRIM
6
VOUT
4
GND
U2
ADR425ARZ
LK1
LK2
VREF
LK3
REFIN
VOUT'
SDI
/CLR
/SYNC
/PD
C16
0.1uF
+
C6
10uF
C7
0.1uF
+
C8
10uF
C9
0.1uF
3
+
2
4
V-
7
V+
6
U5
AD8675ARZ
C4
0.1uF
C5
0.1uF
C10
0.1uF
C11
0.1uF
C12
0.1uF
AVDD
AVDD
VSS
VSS
AVDD
VSS
AVDD
/PD
SDO
SDI
SCLK
/SYNC
/LDAC
/CLR
10579-004
VIN: USE THIS PIN TO POWER THE SDP REQUIRES 5V 200MA
VIO: USE TO SET IO VOL T AGE MAX DRAW 20MA
BOARD ID EEPROM (24LC32) MUST BE ON I2C BUS 0,
I2C BUS 1 IS CO M M ON ACROSS BOTH CONNECTO RS ON SDP - PULL UP RESISTORS REQUIRED
BMODE1: PUL L UP WITH A 10K RESISTOR TO SET SDP TO BOOT FROM A SPI F LASH ON THE DAUGHTER BOARD
(CONNECTED TO BLACKFIN GPIO - US E I2C_0 FIRST)
MAIN I2C BUS (CONNECTED TO BLACKFIN TWI - PULL UP RESI S TORS NOT REQUIRED)
CONNECTOR
STANDARD
SDP
PARALLEL
PORT
SPORT
SPI
I2C
GENERAL
INPUT/OUTPUT
TIMERS
*
*
*
*
*
*
*
*
*
*
*
*
*
*NC ON BLACKFI N S DP
120
NC
119
NC
118
GND
117
GND
116
VIO(+3.3V)
115
GND
114
PAR_D22
113
PAR_D20
112
PAR_D18
111
PAR_D16
110
PAR_D15
109
GND
108
PAR_D12
107
PAR_D10
106
PAR_D8
105
PAR_D6
104
GND
103
PAR_D4
102
PAR_D2
101
PAR_D0
100
PAR_WR
99
PAR_INT
98
GND
97
PAR_A2
96
PAR_A0
95
PAR_FS2
94
PAR_CLK
93
GND
92
SPORT_RSCLK
91
SPORT_DR0
90
SPORT_RFS
89
SPORT_TFS
88
SPORT_DT0
87
SPORT_TSC LK
86
GND
85
SPI_SEL_A
84
SPI_MOSI
83
SPI_MISO
82
SPI_CLK
81
GND
80
SDA_0
79
SCL_0
78
GPIO1
77
GPIO3
76
GPIO5
75
GND
74
GPIO7
73
TMR_B
72
TMR_D
71
NC
70
NC
69
GND
68
NC
67
NC
66
NC
65
NC
64
NC
63
GND
62
UART_TX
61
BMODE1
60
RESET_IN
59
UART_RX
58
GND
57
NC
56
EEPROM_A0
55
NC
54
NC
53
NC
52
GND
51
NC
50
NC
49
TMR_C
48
TMR_A
47
GPIO6
46
GND
45
GPIO4
44
GPIO2
43
GPIO0
42
SCL_1
41
SDA_1
40
GND
39
SPI_SEL1/SPI_SS
38
SPI_SEL_C
37
SPI_SEL_B
36
GND
35
SPORT_IN T
34
SPORT_DT3
33
SPORT_DT2
32
SPORT_DT1
31
SPORT_DR1
30
SPORT_DR2
29
SPORT_DR3
28
GND
27
PAR_FS1
26
PAR_FS3
25
PAR_A1
24
PAR_A3
23
GND
22
PAR_CS
21
PAR_RD
20
PAR_D1
19
PAR_D3
18
PAR_D5
17
GND
16
PAR_D7
15
PAR_D9
14
PAR_D11
13
PAR_D13
12
PAR_D14
11
GND
10
PAR_D17
9
PAR_D19
8
PAR_D21
7
PAR_D23
6
GND
5
USB_VBUS
4
GND
3
GND
2
NC
1
VIN
J1
R5
DNP
R4
100K
USB_VBUS
R2
100K
R3
100K
1
A0
2
A1
3
A2
4
VSS
8
VCC
7
WP
6
SCL
5
SDA
U4
24LC32A-I/MS
3.3V
SCL_0
SDA_0
3.3V
/SYNC
SCLK
SDO
SDI
/LDAC /CLR
/PD
3.3V
10579-005
EVALUATION BOARD SCHEMATICS AND ARTWORK
Figure 4. Schematic of the AD5570 Circuitry
Figure 5. Schematic of the SDP Board Connector
Rev. 0 | Page 6 of 12
Page 7
Evaluation Board User Guide UG-384
10579-006
10579-007
Figure 6. Component Placement Schematic
Figure 7. Top Printed Circuit Board (PCB) Layer Schematic
Rev. 0 | Page 7 of 12
Page 8
UG-384 Evaluation Board User Guide
10579-008
10579-009
Figure 8. Inner First PCB Layer Schematic
Figure 9. Inner Second PCB Layer Schematic
Rev. 0 | Page 8 of 12
Page 9
Evaluation Board User Guide UG-384
10579-010
Figure 10. Bottom PCB Layer Schematic
Rev. 0 | Page 9 of 12
Page 10
UG-384 Evaluation Board User Guide
FEC 150-411
R1
Gold plated pin receptacle, 4.7 kΩ
73007015
Analog Devices 73007015
ORDERING INFORMATION
BILL OF MATERIALS
Table 4.
Reference Designator Part Description Part Number Stock Code
/CLR, /LDAC, /PD, /SYNC, REFIN,
SCLK, SDI, SDO, USB_VBUS, VOUT'
C1, C4, C5, C7, C9, C10, C11,
C12, C16, C35
C6, C8, C34 Capacitor +, Case B, 10 µF, 20 V TAJB106K020RNJ FEC 197427
J1 120-way connector, 0.6 mm pitch FX8-120S-SV(21) FEC 1324660
J5 3-pin terminal block, 5 mm pitch CTB5000/3 FEC 151790
LK1, LK2, LK3 Jumper block, 2 pins, 0.1" spacing M20-9990246 FEC 1022247 and
R2, R3, R4 SMD resistor, 100 kΩ MC 0.063W 0603 1% 100K FEC 9330402
R5 SMD resistor N/A Not inserted
U1 16-bit ±12 V/±15 V serial input voltage
U2 5 V reference ADR425ARZ ADR425ARZ
U4 32 kB I2C Serial EEPROM, MSOP8 24LC32A-I/MS FEC 1331330
U5 Single op amp, 8-lead SOIC AD8675ARZ AD8675ARZ
VOUT, VREF Jack SMB, straight 1-1337482-0 FEC 1206013
Testpoint 20-313137 FEC 8731144
Gold plated pin receptacles 73007015 Analog Devices 73007015
AD5570BRSZ AD5570BRSZ
output DAC
Rev. 0 | Page 10 of 12
Page 11
Evaluation Board User Guide UG-384
NOTES
Rev. 0 | Page 11 of 12
Page 12
UG-384 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 e nergy ESD. Therefore, proper ESD precaution s should be taken to avoid per forma nce degra dation 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. Further more, 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. CONFIDENTIA LITY. This Agree ment and the Evaluation Board shall all be consi dered the confidential and p roprietary 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 co mply with applicable law, including but no t limited to the RoHS Directi ve. TER MINATION. ADI may terminate this Agreement at a ny time upon giving wr itten notice
to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILIT Y. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO
WARRANTIES OR REPRES ENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICAL LY DISC LAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUA RANTEES, OR WARRANT IES, 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, INDIREC T, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S P OSSESSION OR USE OF
THE EVALUAT ION BOARD, INCLUDING BUT NOT LIMI TED TO LOST PROFITS, DE LAY COSTS, LABOR COSTS OR LOSS OF GOODWI LL. ADI’S TOTAL LIA BILITY FROM ANY AN D ALL CAUSES SHA LL 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 o f Goods shall not apply to t his Agreement and is expressly dis claimed.
©2012 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
UG10579-0-3/12(0)
Rev. 0 | Page 12 of 12
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