Evaluation Board User Guide
UG-255
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 AD8403 Digital Potentiometer
FEATURES
GENERAL DESCRIPTION
Full-featured evaluation board for the AD8403
Various test circuits
Various ac/dc input signals
PC control via a separately purchased system demonstration
platform (SDP)
PC software for control
This user guide describes the evaluation board for evaluating the
AD8403, a quad-channel 256-position, digital potentiometer
PACKAGE CONTENTS
In addition, the AD8403 uses a versatile SPI serial interface,
allowing speeds of up to 50 MHz.
The AD8403 supports a single-supply 2.7 V to 5.5 V operation,
making the device suited for battery-powered applications and
many other applications, offering a ±1% channel-to-channel
matching tolerance.
EVAL-AD8403SDZ board
CD that includes
Self-installing software that allows users to control the
board and exercise all functions of the device
Electronic version of the AD8403 data sheet
Electronic version of the UG-255 user guide
The EVAL-AD8403SDZ can operate in single-supply mode and
incorporates an internal power supply from the USB.
Complete specifications for the AD8403 part can be found in
the AD8403 data sheet, which is available from Analog Devices,
Inc., and should be consulted in conjunction with this user
guide when using the evaluation board.
DIGITAL PICTURE OF EVALUATION BOARD WITH SYSTEM DEMONSTRATION PLATFORM
SYSTEM DEMONSTRATION
PLATFORM
09712-001
EVAL-AD8403SDZ
Figure 1.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 16
UG-255
Evaluation Board User Guide
TABLE OF CONTENTS
Features .............................................................................................. 1 Test Circuits ...................................................................................4 Package Contents.............................................................................. 1 Evaluation Board Software...............................................................6 General Description ......................................................................... 1 Installing the Software ..................................................................6 Digital Picture of Evaluation Board with System
Demonstration Platform.................................................................. 1 Running the Software ...................................................................6 Revision History ............................................................................... 2 Evaluation Board Schematics and Artwork...................................8 Evaluation Board Hardware ............................................................ 3 Ordering Information.................................................................... 14 Power Supplies .............................................................................. 3 Bill of Materials........................................................................... 14 Link Options ................................................................................. 3 Related Links................................................................................... 15 Software Operation .......................................................................7 REVISION HISTORY
2/11—Revision 0: Initial Version
Rev. 0 | Page 2 of 16
Evaluation Board User Guide
UG-255
EVALUATION BOARD HARDWARE
POWER SUPPLIES
LINK OPTIONS
The EVAL-AD8403SDZ supports using single power supplies.
Several link and switch options are incorporated in the
evaluation board and should be set up before using the board.
Table 2 describes the positions of the links to control the
evaluation board by a PC, via the SDP board, using the EVALAD8403SDZ in single-supply mode. The functions of these link
options are described in detail in Table 3 through Table 6.
The evaluation board can be powered either from the SDP port
or externally by the J1-1 and J1-2 connectors, as described in
Table 1.
All supplies are decoupled to ground using 10 μF tantalum and
0.1 μF ceramic capacitors.
Table 2. Link Options Setup for SDP Control (Default)
Table 1. Maximum and Minimum Voltages of the Connectors
Connector No.
J1-1
Label
EXT
VDD
J1-2
GND
Voltage
Analog positive power supply, VDD.
For single-supply operation, it is 2.7 V
to 5 V.
Analog ground.
Link No.
A25
A24
Table 3. Link Functions
Link No.
A25
Power Supply
VDD
A24
VSS
Options
This link selects one of the following as the positive power supply:
5 V (from SDP).
3.3 V (from SDP).
EXT (external supply from the J1-1 connector).
This link should be connected to GND (analog ground).
Rev. 0 | Page 3 of 16
Option
3.3 V
GND
UG-255
Evaluation Board User Guide
TEST CIRCUITS
1µF
The EVAL-AD8403SDZ incorporates several test circuits to
evaluate the AD8403 performance.
VDD – VSS
2
AC + DC
AC
AC_INPUT
R34 A1
DAC
RDAC1
RDAC1 can be operated as a digital-to-analog converter (DAC),
as shown in Figure 2.
W1
B1
AC + DC
R34 A1
RDAC1
W1
A1
W1
Depending on the voltage supply rails and the dc offset voltage
of the ac signal, various configurations can be used as described
in Table 5.
Table 5. AC Signal Attenuation Link Options
Table 4 shows the options available for the voltage references.
Link
A20
Options
AC + DC
A21
AC
DC
GND
Table 4. DAC Voltage References
Options
AC + DC
VDD
W1
BUF_W1
B1
A21
DC
GND
Description
Connects Terminal A1 to
(VDD − VSS)/2
Connects Terminal A1 to VDD
Connects Terminal W1 to an
output buffer
Connects Terminal B1 to
(VDD − VSS)/2
Connects Terminal B1 to
analog ground
1
RWB1
256
(1)
where:
RWB1 is the resistor between the W1 and B1 terminals.
VA1 is the voltage applied to the A1 terminal (A20 link).
VB1 is the voltage applied to the B1 terminal (A21 link).
Conditions
No dc offset voltage.
AC signal is outside the voltage supply rails
due to the dc offset voltage.
DC offset voltage ≠ VDD/2.1
All other conditions.
Use in conjunction with ac + dc link.
All other conditions.
Recommended to ensure optimal total harmonic distortion (THD) performance.
The signal attenuation is defined in Equation 2.
⎛ R
+ RW
Attenuation (dB) = 20 × log ⎜⎜ WB1
⎝ R END −TO − END
The output voltage is defined in Equation 1.
VOUT = (V A1 − V B1 ) ×
R35
Figure 3. AC Signal Attenuator
R35
GND
Link
A20
GND
B1
Figure 2. DAC
Terminal
A1
DC
2
W1_BUF
09712-002
2
VDD – VSS
BUF_W1
B1
DC
R36
B1
VDD
VDD – VSS
W1_BUF
BUF_W1
09712-003
VDD – VSS
2
VDD
W1
A1
⎞
⎟
⎟
⎠
where:
RWB1 is the resistor between the W1 and B1 terminals.
RW is the wiper resistance.
REND-TO-END is the end-to-end resistance value.
In addition, R36 can be used to achieve a pseudologarithmic
attenuation. To do so, adjust the R36 resistor until a desirable
transfer function is found.
However, by using the R34 and R35 external resistors, the user
can reduce the voltage of the voltage references. In this case, use
the A1 and B1 test points to measure the voltage applied to the
A0 and B0 terminals and recalculate VA0 and VB0 in Equation 1.
AC Signal Attenuation
RDAC1 can be used to attenuate an ac signal, which must be
provided externally using the AC_INPUT connector, as shown
in Figure 3.
Rev. 0 | Page 4 of 16
(2)
Evaluation Board User Guide
UG-255
Signal Amplifier
The inverting amplifier with linear gain is shown in Figure 6,
and the gain is defined in Equation 5.
RDAC2 can be operated as an inverting or noninverting signal
amplifier supporting linear or pseudologarithmic gains. Table 6
shows the available configurations.
Note that the input signal, VIN, must be negative.
G=−
The noninverting amplifier with linear gain is shown in Figure 4,
and the gain is defined in Equation 3.
(5)
where RWB2 is the resistor between the W2 and B2 terminals.
R41
1.7kΩ
(3)
where RWB2 is the resistor between the W2 and B2 terminals.
R38
2.7kΩ
VIN
W2
R41
1.7kΩ
VIN
VOUT
C1
10nF
R38
2.7kΩ
W2
B2
W2
VOUT
C1
10nF
OAVOUT
B2
OAVOUT
R42
09712-006
R
G = 1 + WB2
R38
RWB2
R38
RDAC2
Figure 6. Linear Inverting Amplifier
B2
R42
09712-004
B2
W2
RDAC2
Output Buffers
RDAC2 and RDAC3 can be connected to an output buffer as
shown Figure 7 and Figure 8.
Figure 4. Linear Noninverting Amplifier
The noninverting amplifier with pseudologarithmic gain is
shown in Figure 5, and the gain is defined in Equation 4.
RWB2
R AW2
W3
VOUT3
BUF_3
B3
Figure 7. RDAC3 Output Buffer
A4
R41
1.7kΩ
VIN
RDAC4
A4
VOUT
W2
A2
W2
B2
B2
OAVOUT
R42
RDAC2
W4
W4
VOUT4
BUF_4
B4
B4
09712-005
C1
10nF
A2
09712-007
B3
where:
RWB2 is the resistor between the W2 and B2 terminals.
RAW2 is the resistor between the A2 and W2 terminals.
R43
W3
(4)
09712-008
G = 1+
A3
RDAC3
A3
Figure 8. RDAC4 Output Buffer
Figure 5. Pseudologarithmic Noninverting Amplifier
R43 and R42 can be used to set the maximum and minimum
gain limits.
Table 6. Amplifier Selection Link Options
Amplifier
Noninverting
Gain
Linear
Pseudologarithmic
Inverting
Linear
Link
A27
A29
A30
A27
A29
A30
A27
A29
A30
Rev. 0 | Page 5 of 16
Label
LINEAR
NON-INV
NON-INV
PSEUDOLOG
NON-INV
NON-INV
LINEAR
INV
INV
VIN Range
0 V to VDD
0 V to VDD
−VDD to 0 V
UG-255
Evaluation Board User Guide
EVALUATION BOARD SOFTWARE
INSTALLING THE SOFTWARE
The EVAL-AD8403SDZ evaluation kit includes evaluation
board software provided on a CD. The software is compatible
with Windows® XP, Windows Vista, and Windows 7 (both
32 bits and 64 bits).
2.
Install the software before connecting the SDP board to the USB
port of the PC to ensure that the SDP board is recognized when
it is connected to the PC.
3.
4.
5.
Start the Windows operating system and insert the CD.
The installation software opens automatically. If it does
not, run the setup.exe file from the CD.
After installation is completed, power up the evaluation
board as described in the Power Supplies section.
Connect the EVAL-AD8403SDZ into the SDP board and the
SDP board into the PC using the USB cable included in the
evaluation kit.
When the software detects the evaluation board, follow the
instructions that appear to finalize the installation.
RUNNING THE SOFTWARE
Figure 9. Pop-Up Window Error
The main window of the EVAL-AD8403SDZ evaluation
software then opens, as shown in Figure 10.
To run the program, do the following:
Click Start > All Programs > Analog Devices > AD8403
> AD8403 Eval Board. To uninstall the program, click
09712-010
1.
09712-009
1.
2.
Start > Control Panel > Add or Remove Programs >
AD8403 Eval Board.
If the SDP board is not connected to the USB port when
the software is launched, a connectivity error displays (see
Figure 9). Simply connect the evaluation board to the USB
port of the PC, wait a few seconds, click Rescan, and follow
the instructions.
Figure 10. EVAL-AD8403SDZ Evaluation Board Software Main Window
Rev. 0 | Page 6 of 16
Evaluation Board User Guide
UG-255
SOFTWARE OPERATION
REGISTER ACCESS has the following options:
The main window of the EVAL-AD8403SDZ software is
divided into the following sections: RDAC1, RDAC2, RDAC3,
RDAC4, and REGISTER ACCESS.
RDAC1, RDAC2, RDAC3, and RDAC4 can be used to update
the RDAC registers by entering a desirable value into the text
box and clicking WRITE.
•
•
•
Rev. 0 | Page 7 of 16
SEND DATA is a customized I2C data-word that can be
sent by manually switching the scroll bars from 0 to 1 or
from 1 to 0, as desired, and then clicking SEND DATA.
In addition, the scroll bars are updated on each write
transfer, showing the command sent to the part.
SHUTDOWN connects the wiper to the B terminal and
open circuits the A terminal. When the button is clicked,
the bit toggles automatically.
EXIT closes the program but does not reset the part.
A1
A1
Rev. 0 | Page 8 of 16
Figure 11. Schematic of Multiboard Digital Potentiometers
B4
W4-3
A4
B3
W3-3
A3
B2
W2-3
A2
B1
W1-3
A1
B4
W4-2
A4
B3
W3-2
A3
B2
W2-2
A2
B1
W1-2
B4
W4-1
A4
B3
W3-1
A3
B2
W2-1
A2
B1
W1-1
16
DGND 9
VDD
AD8403
13
14
2
14 W3
12
22 A4
16 B4
17 W4
VSS
GND
WP
6
5
20
18 A4
22
3
2
4
23
24
1
19
RESET 21
SYNC
DIN
SCLK
SDO
RDY
O2
O1
VDD
AD5233
13 B3
14 W3
15 A3
12 B2
11 W2
10 A2
9 B1
8 W1
U4
7 A1
11
24 B4
VSS
GND 3
23 W4
NC
NC 1
13 B3
NC
SHDN 7
RESET
15 A3
5
VSS
VDD
VSS
WP
RESET
SYNC-3
DIN
SCLK
SDO
RDY
O2
O1
SHDN
RESET
SDO
10
20 W2
SDO
DIN 8
19 A2
21 B2
DIN
SCLK 9
SYNC-2
SCLK
SYNC 4
16 B1
VDD
SYNC-1
DIN
SDO
SCLK
17 W1
11
SHDN
RESET
AD5204
VDD 6
SYNC
DIN 12
SDO
SCLK
VDD
U8
18 A1
6 B4
5
AGND4
8 W4
7 A4
20 B3
17
AGND3
18 W3
19 A3
SHDN 10
2 B2
15
1 AGND2
RESET
4 W2
3 A2
24 B1
21 AGND1
22 W1
U6
23 A1
A1
A1
B2
W2-7
A2
B1
W1-7
A1
V2
V1
B2
W2-6
B1
W1-6
B2
W2-5
A2
B1
B2
W2-4
B1
W1-4
W1-5
SPI
2
W1
9
10
11
B2
W2
A2
16
3
2
1
15
16
3
2
1
15
4
GND 5
VSS
13
WP 14
RESET
RDY
SDO
DIN
SCLK
SYNC
16
3
2
1
15
U11 VDD 12
4
GND 5
VSS
13
WP 14
RESET
RDY
SDO
DIN
SCLK
SYNC
12
4
GND 5
VSS
U12 VDD
AD5235
W1
A1
V2
V1
B2
W2
8 B1
7
6
11
6
9
10
4
13
WP 14
RESET
RDY
SDO
DIN
SCLK
SYNC
ADN2850
B2
W2
A2
8 B1
7
9
10
11
GND
U10 VDD 12
AD5232
W1
A1
B2
W2
B1
SYNC 8
7
DIN 6
SCLK
U2 VDD 5
AD5162
W1
A1
8 B1
7
6
9
3
1
10
VSS
VDD
VSS
VDD
VSS
VDD
VDD
WP
RESET
RDY
SDO
DIN
SCLK
SYNC-7
WP
RESET
RDY
SDO
DIN
SCLK
SYNC-6
WP
RESET
RDY
SDO
DIN
SCLK
SYNC-5
SYNC-4
DIN
SCLK
B2
W2-9
A2
B1
W1-9
A1
B4
W4-8
A4
B3
W3-8
A3
B2
W2-8
A2
B1
W1-8
A1
13
14
12
5
4
6
18 B4
B3
W3
A3
B1
W1
0x58
20
15
5
10
DGND 8
VSS
3
WP 11
AD1 2
AD0
9
SCL 7
SDA
U9 VDD
0x5A
1
VSS 10
DGND
WP
AD0 4
AD1 16
SDA 9
14
SCL
VDD
AD5254
AD5252
A1
19 W4
17 A4
12 B3
13 W3
11 A3
7 B2
6 W2
8 A2
2 B1
1 W1
U7
3 A1
MULTICHANNEL
VSS
VDD
VSS
WP
SDA
SCL
VDD
I2C
WP
SCL
SDA
VDD
B2
W2-11
A2
B1
W1-11
A1
B2
W2-10
A2
B1
W1-10
A1
B1
W1
B1
9
3
B2
W2
U1
AD5243
W1
A1
B2
W2
8 A2
1
10
2
9
3
8 A2
1
10
4
6
7
GND
SCL
SDA
VDD
4
6
7
5
0x5E
GND
SCL
SDA
0x5E
AD5172_SOCKET
2
U3 VDD 5
A1
VDD
SCL
SDA
VDD
SCL
SDA
B2
W2-12
A2
B1
W1-12
A1
7
5
6
1
3
2
B2
W2
A2
B1
W1
A1
VDD
VSS
13
12
11
10
9
GND 8
4
VSS
CS
CLK
U/D
DACSEL
MODE
U5 VDD 14
AD5222
U/D
CS
CLK
U/D
DACSEL
MODE
UG-255
Evaluation Board User Guide
EVALUATION BOARD SCHEMATICS AND ARTWORK
09712-011
Evaluation Board User Guide
UG-255
VDD
8
U15-C
V+
V4
VDD
VSS
R39
AC_INPUT
A1
C3
A20
U15-A
3
A
+
2
1
B
C
-
R40
VDD
AC + DC
AC
R34
A1
AD8652AR
VSS
DAC + FLOATING DAC + BW
W1-1
W1-2
W1-3
W1-4
W1-5
W1-6
W1-7
W1-8
W1-9
W1-10
W1-11
W1-12
AD8403-1
W1_BUF
BUF-W1
AD5204-1
3 +
1
U14-A
2
AD8618ARZ
AD5233-1
W1
AD5162-1
AD5232-1
ADN2850-1
W1
AD5235-1
R36
AD5254-1
PSEUDOLOG ATTENUATOR
AD5252-1
AD5172
AD5243-1
B1
AD5222-1
A21
A
VDD
B1
R35
B1
B
R3
C
VSS
AD8652AR
6
-
5
7
+
U15-B
09712-012
R4
VSS
Figure 12. Schematic of Multiboard RDAC0 Circuits
INVERTING AND NON-INVERTING WITH LINEAR AND PSEUDO-LOG GAIN
W2-8
W2-9
W2-10
W2-11
W2-12
B
AD5232 -2
A
A30
NON-INVERTING
W2
B2
ADN2850 -2
AD5235 -2
A2
VIN
J2-1
W2
AD5254 -2
AD5252 -2
AD5172 -2
AD5243 -2
PSEUDOLOG
INVERTING
GND
NON-INVERTING
DIGIPOT
B2
CIRCUIT CONNE CTION
OAVOU T
5 +
7
6 U14-B
AD8618ARZ
R42
R43
A2
LINEAR
C1
R38
J2-2
09712-013
W2-7
W2
AD5162 -2
B
W2-6
R41
A
W2-5
AD5233 -2
A27
W2-4
VOU T
INVERTING
AD5204 -2
B
W2-3
AD8403 -2
A
W2-2
A29
W2-1
AD5322 -2
Figure 13. Schematic of Multiboard RDAC1 Circuits
Rev. 0 | Page 9 of 16
Rev. 0 | Page 10 of 16
W3-8
W3-3
W3-2
W3-1
AD5254-4
AD5233-4
AD5204-4
AD8403-4
AD5254-3
AD5233-3
AD5204-3
AD8403-3
W4-8
W4-3
W4-2
W4-1
W3
W4
BUF-3
BUF-4
A3
B4
A4
B3
10 +
8
U14-C
9
AD8618ARZ
12 +
14
U14-D
13
AD8618ARZ
CHANNELS 3 AND 4
B3
VOUT3
A3
B4
VOUT4
A4
O1
Figure 14. Schematic of AD8403 Power Supplies and Other Channels
O2
O2
O1
DIGITAL PINS
+3.3V +5V
GND
GND
EXT VSS
B
A
A24
+
V1
V2
V2
V1
+
10uF
C27
C24
10uF
C26
0.1uF
C25
0.1uF
POWER-SUPPLIES
CURRENT MONITOR
J1-3
J1-2
A25
EXT VDD
A
J1-1
+5V
B
+3.3V
C
POWER-SUPPLY
C4
0.1uF
C2
0.1uF
VSS
VDD
UG-255
Evaluation Board User Guide
09712-014
+3.3V
24LC01
1
A0
2
A1
3
A2
4
VSS
D6
LED
U25
8
VCC
7
WP
6
SCL
5
SDA
1K
R37
Rev. 0 | Page 11 of 16
RESET_BF
SHDN_BF
MUX-A0|CS
MUX-A2|U/D
SCL_BF
SDA_BF
DIN_BF
SCLK_BF
SYNC_BF
+5V
+3.3V
J22
Figure 15. Schematic of SDP Connector
114
113
9
112
10
111
71
70
68
67
66
65
64
61
62
I2C
FUTURE USE
BLACKFIN
CONTROL
UART
TIMERS
INPUT/OUTPUT
GENERAL
SPI
90
31
91
92
35
PAR_D23
PAR_D21
SPORT_DR3
SPORT_DR2
SPORT_DT2
SPORT_DT3
TMR_C
FUTURE
FUTURE
FUTURE
FUTURE
FUTURE
FUTURE
FUTURE
RESET_IN
UART_RX
TMR_A
7
8
29
30
33
34
49
50
51
53
54
55
56
57
60
59
48
43
GPIO0
44
GPIO2
45
GPIO4
47
GPIO6
41
SDA_1
42
SCL_1
37
SPI_SEL_B
38
SPI_SEL_C
39
SPI_SEL1/_SS
BLACKFIN-DB_FEMALE_CONNECTOR_2
PAR_D22
PAR_D20
PAR_D19
PAR_D18
PAR_D17
PAR_D16
FUTURE
FUTURE
FUTURE
FUTURE
FUTURE
FUTURE
FUTURE
BMODE1
UART_TX
73
TMR_B
72
TMR_D
78
GPIO1
77
GPIO3
76
GPIO5
74
GPIO7
80
SDA_0-EEPROM
79
SCL_0-EEPROM
85
SPI_SEL_A
84
SPI_MOSI
83
SPI_MISO
82
SPI_CLK
SPORT_RFS
SPORT_DR1
SPORT_DR0
SPORT_RSCLK
SPORT_INT
26
PAR_FS3
27
PAR_FS1
89
SPORT_TFS
32
SPORT_DT1
88
SPORT_DTO
87
SPORT_TSCLK
24
PAR_A3
25
PAR_A1
95
PAR_FS2
94
PAR_CLK
12
13
14
15
16
18
19
20
1
2
3
4
5
6
11
17
23
28
36
40
46
52
58
97
PAR_A2
96
PAR_A0
SPORT
PORT
PARALLEL
PAR_D14
PAR_D13
PAR_D11
PAR_D9
PAR_D7
PAR_D5
PAR_D3
PAR_D1
VIN_4-12V
N/C
GND
GND
5V_USB
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
21
PAR_RD
22
PAR_CS
PAR_D15
PAR_D12
PAR_D10
PAR_D8
PAR_D6
PAR_D4
PAR_D2
PAR_D0
7V_UNREGOUT
7V_UNREGOUT
GND
GND
V_IO(3.3V)
GND
GND
POWER SUPPLY
GND
GND
GND
GND
GND
GND
GND
GND
100
PAR_WR
99
PAR_INT
110
108
107
106
105
103
102
101
120
119
118
117
116
115
109
104
98
93
86
81
75
69
63
SDP BOARD CONNECTOR AND EEPROM
RDY|MODE
WP_BF
CLK_BF
MUX-A1|DACSEL
SDO_BF
+5V
A23
SYNC
RDY|MODE
CLK
MUX-A2|U/D
VDD
A8
A7
A6
A5
MUX-A1|DACSEL
MUX-A0|CS
MUX-A1|DACSEL
MUX-A2|U/D
RDY|MODE
CLK_BF
MUX-A2|U/D
MUX-A1|DACSEL
MUX-A0|CS
MUX-A0|CS
D
VDD
ADG658
7
8
VSS
GND
11
A0
10
9 A1
6 A2
EN
3
16
WP_BF
SYNC_BF
SDO_BF
DIN_BF
S8
S7
S6
S5
S4
S3
S2
S1
A22
4
2
5
1
12
15
14
13
MUX - CS
WP_BF
SYNC_BF
SDO_BF
DIN_BF
SCLK_BF
SCLK_BF
A11
A10
A12
A13
A9
SYNC-7
SYNC-6
SYNC-5
SYNC-4
SYNC-3
SYNC-2
SYNC-1
RESET_BF
SHDN_BF
SCL_BF
SDA_BF
EXTERNAL CONTROL CONNECTION
RDY_BF
SDO_BF
RESET_BF
SHDN_BF
SCL_BF
SDA_BF
A16
A17
A18
A14
SYNC_BF
RESET_BF
WP_BF
SHDN_BF
SCLK_BF
DIN_BF
R1
2k2
+3.3V
VDD
DGND
31
32
35
36
37
38
39
40
1
2
3
4
5
6
7
8
9
10
BE1
BE2
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
SEL
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
34
U13 ADG3247-CSP
11
33
GND VCC
+3.3V
VSS
+3V3
LEVEL TRANSLATOR
SDA_BF
SCL_BF
MUX-A0|CS
MUX-A1|DACSEL
MUX-A2|U/D
RDY|MODE
CLK_BF
R2
2k2
+3.3V
VDD
AGND
VSS
+5V
SCLK
DIN
SDO
SYNC
RESET
WP
SHDN
RDY
SDA
SCL
CS
DACSEL
U/D
MODE
CLK
+5V
TEST POINTS
Evaluation Board User Guide
UG-255
09712-015
Evaluation Board User Guide
09712-016
UG-255
09712-017
Figure 16. Component Side View
09712-018
Figure 17. Component Placement Drawing
Figure 18. Layer 2 Side PCB Drawing
Rev. 0 | Page 12 of 16
UG-255
09712-019
Evaluation Board User Guide
09712-020
Figure 19. Layer 3 Side PCB Drawing
Figure 20. Solder Side PCB Drawing
Rev. 0 | Page 13 of 16
UG-255
Evaluation Board User Guide
ORDERING INFORMATION
BILL OF MATERIALS
Table 7.
Qty
1
4
1
2
1
1
1
1
4
3
4
1
2
5
40
1
Reference Designator
C1
C2, C4, C25, C26
C3
C24, C27
D6
J1
J2
J22
A20, A21, A24, A25
A27, A29, A30
BUF-W1, OAVOUT, BUF-3, BUF-4
R41
R1, R2
R3, R4, R38, R39, R40
AD5162-1, AD5162-2, AD8403-1, AD8403-2,
AD5204-1, AD5204-2, AD5204-3, AD5204-4,
AD5222-1, AD5222-2, AD5232-1, AD5232-2,
AD5233-1, AD5233-2, AD5233-3, AD5233-4,
AD5235-1, AD5235-2, AD5243-1, AD5243-2,
AD5252-1, AD5252-2, AD8403-1, AD8403-2,
AD8403-3, AD8403-4, AD8403-1, AD8403-2,
AD8403-3, AD8403-4, ADN2850-1, ADN28502, R34, R35, R42, R43
R37
3.3 V, 5 V, DGND, AGND, VDD, VSS
A1, A2, A3, A4, RDY|MODE, RESET_BF, SCL_BF,
SCLK_BF, SDA_BF, SDO_BF, SHDN_BF,
SYNC_BF, MUX-A0|CS, MUX-A1|DACSEL MUXA2|U/D, O1, O2, DIN_BF, CLK, B1, B2, B3, B4, V1,
V2, VOUT, VOUT2, VOUT3, VOUT4, W1,
W1_BUF, W2, W3, W4, WP_BUF
U1
1
U2
1
U3
1
U4
1
1
1
U5
U6
U7
1
1
U8
U9
1
U10
1
U11
1
6
34
Description
10 nF capacitor, 0805
0.1 μF capacitor, 0603
1 μF capacitor, 0402
10 μF capacitor, 1206
LED, green
3-pin connector
2-pin connector
Receptacle, 0.6 mm, 120-way
Header 2-row, 36 + 36 way and jumper socket, black
Header 1-row, 3-way and jumper socket, black
Header 1-row, 2-way and jumper socket, black
1.78 kΩ resistor, 0603, 1%
2.2 kΩ resistor, 0603, 1%
2.7 kΩ resistor, 1206, 1%
0 Ω resistor, 0603
Supplier 1 /Part Number
FEC 1692285
FEC 138-2224
FEC 1288253
FEC 1611967
FEC 579-0852
FEC 151790
FEC 151789
Digi-Key H1219-ND
FEC 148-535 and FEC 150-410
FEC 102-2248 and FEC 150-410
FEC 102-2247 and FEC 150-410
FEC 1170811
FEC 933-0810
FEC 9337288
FEC 9331662
1 kΩ resistor, 0603, 1%
Test point, PCB, black, PK100
Test point, PCB, red, PK100
FEC 933-0380
FEC 873-1128
FEC 873-1144
256-position, dual-channel, I2C-compatible digital
potentiometer
256-position, dual-channel, SPI digital
potentiometer
256-position, one-time programmable, dualchannel, I2C digital potentiometer
Nonvolatile, quad, 64-position digital
potentiometer
Dual, increment/decrement digital potentiometer
4-channel digital potentiometer
Quad, 256-position, I2C, nonvolatile memory
digital potentiometer
4-channel digital potentiometer
I2C, nonvolatile memory, dual, 256-position digital
potentiometer
Nonvolatile memory, dual, 256-position digital
potentiometer
Dual, 1024-position digital potentiometer with
nonvolatile memory and SPI interface
Analog Devices AD5243
Rev. 0 | Page 14 of 16
Analog Devices AD5162
Analog Devices AD8403
Analog Devices AD5233
Analog Devices AD5222
Analog Devices AD8403
Analog Devices AD5254
Analog Devices AD5204
Analog Devices AD5252
Analog Devices AD5232
Analog Devices AD5235
Evaluation Board User Guide
Qty
1
Reference Designator
U12
1
U13
1
1
A22
U15
1
U14
1
U25
1
UG-255
Description
Dual, 1024-position digital rheostat with
nonvolatile memory and SPI interface
2.5 V/3.3 V, 16-bit (dual 8 bit), 2-port level
translator bus switch
3 V/5 V, ± 5 V CMOS, 8-channel analog multiplexer
50 MHz, precision, low distortion, low noise CMOS
amplifier
Precision, 20 MHz, CMOS, quad, rail-to-rail
operational amplifier
24LC64 EEPROM
Supplier 1 /Part Number
Analog Devices ADN2850
Analog Devices ADG3247
Analog Devices ADG658
Analog Devices AD8652
Analog Devices AD8618
FEC 975-8070
FEC refers to Farnell Electronic Component Distributors; Digi-Key refers to Digi-Key Corporation.
RELATED LINKS
Resource
AD5243
AD5162
AD5233
AD5222
AD8403
AD5254
AD5204
AD5252
AD5232
AD5235
ADN2850
ADG3247
ADG658
AD8652
AD8618
Description
Product Page, 256-Position Dual-Channel I2C Compatible Digital Potentiometer
Product Page, 256-Position Dual-Channel SPI Digital Potentiometer
Product Page, Nonvolatile, Quad, 64-Position Digital Potentiometer
Product Page, Dual, Increment/Decrement Digital Potentiometer
Product Page, 4-Channel Digital Potentiometer
Product Page, Quad 256-Position I2C Nonvolatile Memory, Digital Potentiometer
Product Page, 4-Channel Digital Potentiometer
Product Page, I2C, Nonvolatile Memory, Dual 256-Position Digital Potentiometer
Product Page, Nonvolatile Memory, Dual, 256-Position Digital Potentiometer
Product Page, Dual 1024-Position Digital Potentiometer with Nonvolatile Memory and SPI Interface
Product Page, Dual 1024-Position Digital Rheostat with Nonvolatile Memory and SPI Interface
Product Page, 2.5 V/3.3 V, 16-Bit (Dual 8-Bit), 2-Port Level Translator, Bus Switch
Product Page, 3 V/5 V ± 5 V CMOS 8-Channel Analog Multiplexer
Product Page, 50 MHz, Precision, Low Distortion, Low Noise CMOS Amplifier
Product Page, Precision 20 MHz CMOS Quad Rail-to-Rail Operational Amplifier
Rev. 0 | Page 15 of 16
UG-255
Evaluation Board User Guide
NOTES
I2C refers to a communications protocol originally developed by Philips Semiconductors (now NXP Semiconductors).
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.
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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
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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
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©2011 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
UG09712-0-2/11(0)
Rev. 0 | Page 16 of 16