Evaluation Board User Guide
UG-472
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 AD5142A Digital Potentiometer
FEATURES
GENERAL DESCRIPTION
Full featured evaluation board in conjunction with low
voltage digiPOT motherboard (EVAL-MB-LV-SDZ)
Various test circuits
Various ac/dc input signals
PC control via a separately purchased system demonstration
platform (SDP-B or SDP-S)
PC software for control
This user guide describes the evaluation board for evaluating the
AD5142A—a quad-channel, 256-position, nonvolatile memory,
digital potentiometer. With versatile programmability, the
AD5142A allows multiple modes of operation, including
read/write access in the RDAC and EEMEM registers,
increment/decrement of resistance, resistance changes in ±6 dB
scales, wiper setting readback, and extra EEMEM for storing
user-defined information, such as memory data for other
components or a lookup table.
PACKAGE CONTENTS
EVAL-AD5142ADBZ board
EVAL-MB-LV-SDZ motherboard
CD that includes
Self-installing software that allows users to control the
board and exercise all functions of the device
Electronic version of the AD5142A data sheet
Electronic version of the UG-472 user guide
The AD5142A supports a dual-supply ±2.25 V to ±2.75 V operation
and a single-supply 2.3 V to 5.5 V operation, making the device
suitable for battery-powered applications and many other applications. In addition, the AD5142A uses a versatile I2C-compatible
serial interface that operates in fast mode, allowing speeds of up to
400 kbps and supporting the selection of up to nine different I2C
addresses. The EVAL-AD5142DBZ can operate in single-supply
or dual-supply mode and incorporates an internal power supply
from the USB.
Complete specifications for the AD5142A part can be found in the
AD5142A data sheet, which is available from Analog Devices, Inc.,
and should be consulted in conjunction with this user guide
when using the evaluation board.
11009-001
EVAL-AD5142ADBZ WITH MOTHERBOARD AND SDP-S
Figure 1. Digital Picture of Evaluation Board with Low Voltage DigiPOT Motherboard and System Demonstration Platform
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 20
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Evaluation Board User Guide
TABLE OF CONTENTS
Features .............................................................................................. 1
Evaluation Board Software ...............................................................8
Package Contents .............................................................................. 1
Installing the Software ..................................................................8
General Description ......................................................................... 1
Software Operation .................................................................... 10
EVAL-AD5142ADBZ with Motherboard and SDP-S .................. 1
Evaluation Board Schematics and Artwork ................................ 11
Revision History ............................................................................... 2
Motherboard ............................................................................... 11
Evaluation Board Hardware ............................................................ 3
Daughter Board .......................................................................... 15
Power Supplies .............................................................................. 3
Ordering Information .................................................................... 18
Test Circuits................................................................................... 4
Bill of Materials ........................................................................... 18
REVISION HISTORY
11/12—Revision 0: Initial Version
Rev. 0 | Page 2 of 20
Evaluation Board User Guide
UG-472
EVALUATION BOARD HARDWARE
functions of these link options are described in detail in Table 4
through Table 7.
POWER SUPPLIES
The EVAL-MB-LV-SDZ motherboard supports using single and
dual power supplies.
The EVAL-AD5142ADBZ evaluation board can be powered either
from the SDP port or externally by the J1 and J2 connectors, as
described in Table 1.
All supplies are decoupled to ground using 10 µF tantalum and
0.1 µF ceramic capacitors.
Table 1. Maximum and Minimum Voltages of the Connectors
Connector No.
J1-1
Label
VDD
J1-2
J1-3
AGND
VSS
J2-1
J2-2
VLOGIC
DGND
Voltage
Analog positive power supply, VDD.
Single supply from 2.3 V to 5.5 V.
Dual supply from 2.25 V to 2.75 V.
Analog ground.
Analog negative power supply, VSS.
Dual supply from −2.25 V to −2.75 V.
Digital supply, from 1.8 V to VDD.
Digital ground.
Table 2. Link Options Setup for SDP Control (Default)
Link No.
A5
A11
A12
Option
+3V3
3.3 V
AGND
Linear Gain Setting Mode
The linear gain setting mode pin is controlled directly by
Jumper A1. If the jumper is placed in DEPEN, the AD5142A
powers up in potentiometer mode, and the linear gain setting
mode can be controlled by software. If the jumper is placed in
INDEP, the part powers up in linear gain setting mode, loading
independent values for each resistor string—RAW1, RWB1, RAW2,
and RWB2. The part cannot be placed in potentiometer mode
again unless the jumper is manually placed in DEPEN.
I2C Address Selection
The I2C address can be selected by using Link A1 and Link A2
as described in Table 3.
Table 3. I2C Address Selection
Link Options
Several link and switch options are incorporated in the EVALMB-LV-SDZ motherboard and should be set up before using
the board. Table 2 describes the positions of the links to control
the evaluation board via the SDP board using a PC. The
Link A1
Position A
Position B
Link A2
Position A
Position B
Position A
Position B
I2C Address
0101111
0100011
0101100
0100000
Table 4. Link Functions
Link No.
A5
Power Supply
VLOGIC
A11
VDD
A12
VSS
Options
This link selects one of the following as the digital supply:
+3V3 (3.3 V from SDP).
VLOGIC EXT (external supply from the J2 connector).
This link selects one of the following as the positive power supply:
+5 V (5 V from SDP).
3V3 (3.3 V from SDP).
VDD (external supply from the J1 connector).
This link selects one of the following as the negative power supply:
AGND.
EXTVSS (external supply from the J1 connector).
Rev. 0 | Page 3 of 20
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Evaluation Board User Guide
TEST CIRCUITS
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
A and B terminals and to recalculate VA and VB in Equation 1.
The EVAL-AD5142ADBZ and EVAL-MB-LV-SDZ incorporate
several test circuits to evaluate the performance of the AD5142A.
DAC
Table 5. DAC Voltage References
The digiPOT can be operated as a digital-to-analog converter
(DAC), as shown in Figure 2. Table 5 describes the options
available for the voltage references.
The output voltage is defined in Equation 1.
VOUT
RDAC1
= (VA − VB ) ×
256
(1)
Terminal
A1
Link
A9
Options
AC+
VDD
W1
BUF-W1
B1
A10
BIAS
VSS
AGND
where:
RDAC1 is the code loaded in the RDAC1 register.
VA is the voltage applied to the A terminal (A9 link).
VB is the voltage applied to the B terminal (A10 link).
VDD
2
AC+
VDD
VDD
R34
RDAC1
A1
A1
W1
W1
VOUT1
BUF-W1
B1
B1
R35
VDD
2
BIAS
VSS
VSS
11009-002
AGND
Figure 2. DAC
Rev. 0 | Page 4 of 20
Description
Connects Terminal A1 to VDD/2
Connects Terminal A1 to VDD
Connects Terminal W1 to an
output buffer
Connects Terminal B1 to VDD/2
Connects Terminal B1 to VSS
Connects Terminal B1 to
analog ground
Evaluation Board User Guide
UG-472
AC Signal Attenuation
Table 6. AC Signal Attenuation Link Options
The RDAC can be used to attenuate an ac signal, which must be
provided externally using the AC_INPUT connector, as shown
in Figure 3.
Voltage
Supply
Single
Depending on the voltage supply rails and the dc offset voltage
of the ac signal, various configurations can be used as described
in Table 6.
Maximum
AC Signal
Amplitude
VDD
Link
A9
Options
AC+
A10
AC
BIAS
A9
GND
AC+
A10
AC
GND
The signal attenuation is defined in Equation 2.
R + RW
Attenuation (dB) = 20 × log WB1
R AB
(2)
where:
RW is the wiper resistance.
RAB is the end-to-end resistance value.
RWB1 is the resistor between the W1 and B1 terminals.
Dual
VDD/VSS
VSS
1
1kHz
Recommended to ensure optimal total harmonic distortion (THD) performance.
VDD
2
HPF
AC+
AC
AC_INPUT
R34
RDAC1
A1
A1
W1
W1
VOUT1
BUF-W1
B1
B1
R35
VDD
BIAS
2
VSS
Conditions
No dc offset voltage;
the ac signal is
outside the voltage
supply rails due to
the dc offset voltage;
or the dc offset
voltage ≠ VDD/2.1
All other conditions.
Use in conjunction
with the AC+ link.
All other conditions.
The ac signal is
outside the voltage
supply rails due to
the dc offset voltage;
the dc offset
voltage ≠ 0 V.1
All other conditions.
Use in conjunction
with the AC+ link.
All other conditions.
AGND
Figure 3. AC Signal Attenuator
Rev. 0 | Page 5 of 20
11009-003
VSS
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Evaluation Board User Guide
Signal Amplifier
The inverting amplifier with linear gain is shown in Figure 6,
and the gain is defined in Equation 5.
The RDAC can be operated as an inverting or noninverting
signal amplifier supporting linear or pseudologarithmic gains.
Table 7 shows the available configurations.
Note that the input signal, VIN, must be negative.
The noninverting amplifier with linear gain is shown in Figure 4,
and the gain is defined in Equation 3.
RWB2
R AW2
(3)
RWB2
R AW2
(5)
where:
RWB2 is the code loaded for the RWB2 resistance.
RAW2 is the code loaded for the RAW2 resistance.
where:
RWB2 is the code loaded for the RWB2 resistance.
RAW2 is the code loaded for the RAW2 resistance.
R41
1.7kΩ
VOUT2
C1
10nF
W2
R41
1.7kΩ
VIN
VOUT2
A2
VIN
C1
10nF
W2
R43
W2
A2
RDAC2
B2
11009-006
G =1+
G=−
R42
B2
Figure 6. Linear Inverting Amplifier
A2
R42
B2
RDAC2
R43 and R42 can be used to set the maximum and minimum
gain limits.
Figure 4. Linear Noninverting Amplifier
The inverting amplifier with pseudologarithmic gain is shown
in Figure 7, and the gain is defined in Equation 6.
R43 and R42 can be used to set the maximum and minimum
gain limits.
G=−
The noninverting amplifier with pseudologarithmic gain is
shown in Figure 5, and the gain is defined in Equation 4.
RDAC2
G =1+
256 − RDAC2
(4)
RDAC2
256 − RDAC2
(6)
where:
RDAC2 is the code loaded in the RDAC2.
R41
1.7kΩ
where:
RDAC2 is the code loaded in the RDAC2.
VOUT2
A2
VIN
C1
10nF
W2
A2
RDAC2
B2
R42
R43
W2
A2
RDAC2
B2
B2
R42
Figure 7. Pseudologarithmic Inverting Amplifier
B2
W2
R43 and R42 can be used to set the maximum and minimum
gain limits.
11009-005
A2
C1
10nF
W2
R41
1.7kΩ
VIN
R43
VOUT2
11009-007
R43
B2
W2
11009-004
A2
Figure 5. Pseudologarithmic Noninverting Amplifier
R43 and R42 can be used to set the maximum and minimum
gain limits.
Rev. 0 | Page 6 of 20
Evaluation Board User Guide
UG-472
Table 7. Amplifier Selection Link Options
Amplifier
Noninverting
Inverting
Gain
Linear
Linear Setting
Gain Mode Enabled
Yes
Pseudologarithmic
No
Linear
Yes
Pseudologarithmic
No
Rev. 0 | Page 7 of 20
Link
A7
A6
A8
A7
A6
A8
A7
A6
A8
A7
A6
A8
Label
LIN
N-INV
N-INV
LOG
N-INV
N-INV
LIN
INV
INV
LOG
INV
INV
UG-472
Evaluation Board User Guide
EVALUATION BOARD SOFTWARE
INSTALLING THE SOFTWARE
The EVAL-AD5142ADBZ kit includes a CD containing the
evaluation board software. 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.
Start > Control Panel > Add or Remove Programs >
AD5142A Eval Board.
If the SDP board is not connected to the USB port when
the software is launched, a connectivity error displays (see
Figure 8). Simply connect the evaluation board to the USB
port of the PC, wait a few seconds, click Rescan, and follow
the instructions.
1.
2.
3.
4.
5.
Start the Windows operating system and insert the CD into
the CD-ROM drive.
The installation software opens automatically. If it does not
open automatically, run the setup.exe file from the CD.
After the installation is complete, power up the evaluation
board as described in the Power Supplies section.
Connect the EVAL-AD5142ADBZ and EVAL-MB-LV-SDZ
to the SDP board, and then connect the SDP board to the
PC using the USB cable included with the SDP board.
When the software detects the evaluation board, follow the
instructions that appear to finalize the installation.
11009-008
To install the software,
Figure 8. Pop-Up Window Error
The main window of the EVAL-AD5142ADBZ software then
opens, as shown in Figure 9.
To run the program, do the following:
1.
Click Start > All Programs > Analog Devices > AD5142A
> AD5142A Eval Board. To uninstall the program, click
Rev. 0 | Page 8 of 20
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11009-020
Evaluation Board User Guide
Figure 9. EVAL-AD5142ADBZ Software Main Window
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Evaluation Board User Guide
SOFTWARE OPERATION
value in its respective block within the diagram. In addition,
buttons are available that allow you to change the level of some
hardware pins.
The main window of the EVAL-AD5142ADBZ software has
two tabs, Visual Mode and Manual Control.
Manual Mode
Visual Mode
The Visual Mode tab is divided into the following sections:
ALL CHANNELS COMMANDS, INDIVIDUAL CHANNEL
COMMANDS, and a block diagram that contains boxes for
changing the control register values and buttons and for controlling
the hardware pins.
The Manual Mode tab, as shown in Figure 10, allows you to
customize an I2C data-word by manually switching the scroll
bars from 0 to 1 or from 1 to 0, as desired, and then clicking
SEND DATA.
The INDIVIDUAL CHANNEL COMMANDS section allows
you to send quick commands to only specific channels of
the AD5142A.
The block diagram allows you to update the control register
status. Each register value can be easily updated by changing the
Rev. 0 | Page 10 of 20
11009-021
The ALL CHANNELS COMMANDS section allows you to
send quick commands directly to the AD5142A.
Figure 10. Manual Mode
Evaluation Board User Guide
UG-472
EVALUATION BOARD SCHEMATICS AND ARTWORK
11009-010
MOTHERBOARD
Figure 11. SDP Connector and Power Supply
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Evaluation Board User Guide
11009-011
Figure 12. Schematic of Test Circuits
Rev. 0 | Page 12 of 20
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11009-012
Evaluation Board User Guide
Figure 13. Schematic of Connectors to Daughter Board
Rev. 0 | Page 13 of 20
Evaluation Board User Guide
11009-013
UG-472
11009-014
Figure 14. Component Side View of Motherboard
11009-015
Figure 15. Component Placement Drawing of Motherboard
Figure 16. Layer 2 Side PCB Drawing of Motherboard
Rev. 0 | Page 14 of 20
INDEP
B2
W2
A2
B1
W1
INDEP
ADDR1
ADDR0
U1
15
A3
A2
A1
10
9
INDEP
5
1
16
DEPEN
VSS
GND
RESET
14
ADDR0
ADDR1 13
SDA 12
SCL 11
VLOGIC
VDD
AD5142A
INDEP
8 B2
7 W2
6 A2
4 B1
3 W1
2 A1
B
A
B
A
B
Figure 17. Schematic of Daughter Board
A
RESET
ADDR0
ADDR1
SDA
SCL
VLOGIC
DGND
VLOGIC
DGND
VLOGIC
DGND
VLOGIC
VSS
DGND
VDD
VLOGIC
VSS
10uF
+ C4
VDD
10uF
+ C2
0.1uF
C3
0.1uF
C1
SCLK
J1-8
SDO
J1-6
SDI
SYNC
J1-5
J1-7
SDA
SCL
J1-4
ADDR1
J1-2
J1-3
ADDR0
J1-1
DGND
RESET
J3-1
J4-1
WP
J3-2
J4-2
VLOGIC
LRDAC
AGND
DIS
J3-4
W2
J2-11
B2
B2
A2
J2-10
J2-9
W2
J2-12
B1
J2-8
J2-7
A2
W1
J2-6
A1
J2-4
J2-5
B1
J2-2
J2-1
J2-3
A1
W1
J4-4
J3-3
J4-3
INDEP
J3-5
J4-5
VSS
Rev. 0 | Page 15 of 20
VDD
A1
Evaluation Board User Guide
UG-472
DAUGHTER BOARD
11009-016
Evaluation Board User Guide
11009-017
UG-472
11009-018
Figure 18. Component Side View of Daughter Board
Figure 19. Component Placement Drawing of Daughter Board
Rev. 0 | Page 16 of 20
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11009-019
Evaluation Board User Guide
Figure 20. Layer 2 Side PCB Drawing of Daughter Board
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Evaluation Board User Guide
ORDERING INFORMATION
BILL OF MATERIALS
Table 8. Motherboard
Qty
3
3
5
1
2
1
1
1
2
17
1
1
1
1
1
1
3
5
1
8
4
2
4
2
1
1
1
1
1
1
1
1
1
18
5
1
Reference Designator
BUF-3, BUF-4, BUF-W1
A6, A7, A8
A5, A9, A10, A11, A12
J1
J7, J8
J4
J10
J5
J2, J3
R1, R3, R6, R7, R8, R9, R10, R11, R12,
R13, R20, R22, R23, R34, R35, R42,
R43
R2
R41
R21
R38
R14
R4
R5, R25, R26
R15, R16, R17, R18, R19
C1
C4, C9, C10, C11, C12, C17, C19, C21
C2, C6, C7, C14
C8, C13
C18, C20, C22, C5
C3, C15
C16
C34
L2
D1
U1
U2
U3
U4
U5
LRDAC, RESET, SYNC, WP, A1, A2,
A3, A4, AGND, B1, VOUT_C1,
VOUT_C2, VOUT3, VOUT4, W1, W2,
W3, W4
+3.3V , +5V, EXT_VDD, VLOGIC,
EXT_VSS
Description
2-pin (0.1" pitch) header and shorting shunt
3-pin SIL header and shorting link
6-pin (3 × 2), 0.1" header and shorting block
3-pin terminal block (5 mm pitch)
4-pin SIL header
Receptacle, 0.6 mm, 120-way
8-pin in-line header; 100 mil centers
12-pin (2 × 6), 0.1" pitch header
2-pin terminal block (5 mm pitch)
SMD resistor, 0 Ω, 0.01, 0603
Supplier 1/Part Number
FEC 1022247 and 150411
FEC 1022248 and 150410
FEC 672014 and 150411 (36-pin strip)
FEC 151790
FEC 1098035
Digi-Key H1219-ND
FEC 1098038
FEC 1098051
FEC 151789
FEC 9331662
SMD resistor, 2.2 kΩ, 0.01, 0603
SMD resistor, 1.7 kΩ, 1% ,0603
Resistor, surge, 1.6 Ω, 1%, 0603
SMD resistor, 2.7 kΩ, 1%, 0603
SMD resistor, 100 Ω, 1%, 0603
SMD resistor, 1 kΩ, 0.01, 0603
SMD resistor, 100 kΩ, 1%, 0603
SMD resistor, 33 kΩ, 1%, 0603
SMD capacitor, 100 nF, 10%, 0805
SMD capacitor, 0.1 µF, ±10%, 0603
SMD capacitor, 0.1 µF, ±10%, 0603
SMD capacitor, 10 µF, ±10%
Capacitor, 10 µF, ±20%
Capacitor, 470 nF, ±10%, 0603
Capacitor, 4.7 nF, ±10%, 0603
Capacitor, 4.7 nF, ±20%
Inductor, SMD, 600Z
Green SMD LED
Two-port level translating bus switch
Dual op amp
Precision low dropout voltage regulator
Operational amplifier
I2C serial EEPROM 64k 2.5 V MSOP-8
Terminal, PCB, black, PK100, test point
FEC 1750676
FEC 1170811
FEC 1627674
FEC 1750678
FEC 9330364
FEC 9330380
FEC 9330402
FEC 9331034
FEC 1650863
FEC 1759122
FEC 3019482
FEC 197130
FEC 1190107
FEC 1414037
FEC 1414642
FEC 1432350
FEC 9526862
FEC 5790852
ADG3247BCPZ
AD8652ARZ
ADP3303ARZ-3.3
AD8618ARZ
FEC 1331335
FEC 8731128
Terminal, PCB, red, PK100, test point
FEC 8731144
FEC refers to Farnell Electronic Component Distributors; Digi-Key refers to Digi-Key Corporation.
Rev. 0 | Page 18 of 20
Evaluation Board User Guide
UG-472
Table 9. Daughter Board
Qty
1
3
2
2
1
1
2
1
Reference Designator
U1
A1, A2, A3
C2, C4
C1, C3
J1
J2
J3, J4
Description
256-position digital potentiometer
3-pin SIL header and shorting link
6.3 V tantalum capacitor (Case A), 10 µF, ±20%
50 V, X7R ceramic capacitor, 0.1 µF, ±10%
Header, 2.54 mm, PCB, 1 × 8-way
12-pin (2 × 6), 0.1" pitch header
5-pin SIL header
FEC refers to Farnell Electronic Component Distributors.
Rev. 0 | Page 19 of 20
Supplier 1/Part Number
AD5142ABCPZ10
FEC 1022248 and 150410
FEC 1190107
FEC 1759122
FEC 1766172
FEC 1804099
FEC 1929016
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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.
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
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