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Texas Instruments Channel Tuning Made Easy Using Linear Repeaters for 10G and 12G Applications Application notes
Application Report
SNLA230 – January 2015
Channel Tuning Made Easy Using Linear Redrivers
Guilherme Borba
ABSTRACT
This report demonstrates the benefits of using Texas Instruments Linear Redrivers to simplify the process
of channel tuning and improve system margins. Test results of the DS125BR820 linear redriver operating
in various pre-channel and post-channel conditions are presented and show improvements in channel
conditions in terms of transmitter pre- and post-cursor error-free operating region. This allows link training
to more easily find an optimal operating point that is more robust against system variations. These results
are applicable to other Linear Redriver devices in TI’s signal conditioning portfolio, including
DS125BR111, DS125BR401A, and DS80PCI810.
Contents
1
Introduction ................................................................................................................... 3
2
Pre-Channel and Post-Channel Performance Test ..................................................................... 3
3
Conclusions................................................................................................................... 8
Appendix A
10.3125 Gbps Error Count Matrices ............................................................................. 9
Appendix B
12.5 Gbps Error Count Matrices ................................................................................ 12
List of Figures
.......................................................................................
1
Test Setup with DS125BR820EVM
2
Test Setup without Redriver ................................................................................................ 3
3
DS125BR820EVM Top Side
4
40" (-33.9 dB) Channel No-Redriver ...................................................................................... 5
5
5" (-5.7 dB) Pre- and 35" (-31.9 dB) Post-channel with Redriver
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
..............................................................................................
3
4
..................................................... 5
45" (-38.2 dB) Channel No-Redriver ...................................................................................... 5
5" (-5.7 dB) Pre- and 40" (-35.3 dB) Post-channel with Redriver ..................................................... 5
30" (-31.2 dB) Channel No-Redriver ...................................................................................... 6
5" (-6.8 dB) Pre- and 25" (-27 dB) Post-channel with Redriver ........................................................ 6
35" (-36 dB) Channel No-Redriver ........................................................................................ 6
10" (-11.9 dB) Pre- and 25" (-27 dB) Post-channel with Redriver ..................................................... 6
35" (-30.5 dB) Channel No-Redriver ...................................................................................... 7
5" (-5.7 dB) Pre- and 40" (-35.3 dB) Post-channel with Redriver ..................................................... 7
30" (-31.2 dB) Channel No-Redriver ..................................................................................... 7
10" (-11.9 dB) Pre- and 25" (-27 dB) Post-channel with Redriver ..................................................... 7
40" (-33.9 dB) Channel No-Redriver ...................................................................................... 9
5" (-5.7 dB) Pre- and 35" (-31.9 dB) Post-channel with Redriver ..................................................... 9
40" (-33.9 dB) Channel No-Redriver ...................................................................................... 9
15" (-14.5 dB) Pre- and 25" (-22.9 dB) Post-channel with Redriver .................................................. 9
40" (-33.9 dB) Channel No-Redriver ...................................................................................... 9
25" (-22.9 dB) Pre- and 15" (-14.5 dB) Post-channel with Redriver .................................................. 9
40" (-33.9 dB) Channel No-Redriver ..................................................................................... 10
35" (-31.9 dB) Pre- and 5" (-5.7 dB) Post-channel with Redriver .................................................... 10
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24
45" (-38.2 dB) Channel No-Redriver ..................................................................................... 10
25
5" (-5.7 dB) Pre- and 40" (-35.3 dB) Post-channel with Redriver .................................................... 10
26
45" (-38.2 dB) Channel No-Redriver ..................................................................................... 10
27
15" (-14.5 dB) Pre- and 30" (-27.9 dB) Post-channel with Redriver ................................................. 10
28
45" (-38.2 dB) Channel No-Redriver ..................................................................................... 11
29
30" (-27.9 dB) Pre- and 15" (-14.5 dB) Post-channel with Redriver ................................................. 11
30
45" (-38.2 dB) Channel No-Redriver ..................................................................................... 11
31
40" (-35.3 dB) Pre- and 5" (-5.7 dB) Post-channel with Redriver .................................................... 11
32
30" (-31.2 dB) Channel No-Redriver ..................................................................................... 12
33
5" (-6.8 dB) Pre- and 25" (-27 dB) Post-channel with Redriver ...................................................... 12
34
30" (-31.2 dB) Channel No-Redriver ..................................................................................... 12
35
10" (-11.9 dB) Pre- and 20" (-22.1 dB) Post-channel with Redriver ................................................. 12
36
30" (-31.2 dB) Channel No-Redriver ..................................................................................... 12
37
20" (-22.1 dB) Pre- and 10" (-11.9 dB) Post-channel with Redriver ................................................. 12
38
30" (-31.2 dB) Channel No-Redriver ..................................................................................... 13
39
25" (-27 dB) Pre- and 5" (-6.8 dB) Post-channel with Redriver ...................................................... 13
40
35" (-36 dB) Channel No-Redriver ....................................................................................... 13
41
5" (-6.8 dB) Pre- and 30" (-32.9 dB) Post-channel with Redriver .................................................... 13
42
35" (-36 dB) Channel No-Redriver ....................................................................................... 13
43
10" (-11.9 dB) Pre- and 25" (-27 dB) Post-channel with Redriver ................................................... 13
44
35" (-36 dB) Channel No-Redriver ....................................................................................... 14
45
25" (-27 dB) Pre- and 10" (-11.9 dB) Post-channel with Redriver ................................................... 14
46
35" (-36 dB) Channel No-Redriver ....................................................................................... 14
47
30" (-32.9 dB) Pre- and 5" (-6.8 dB) Post-channel with Redriver .................................................... 14
List of Tables
1
2
DS125BR820 Settings Used for Testing
.................................................................................
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Introduction
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1
Introduction
The testing carried out in this report involves the DS125BR820 Low-Power 12.5 Gbps 8-Channel Linear
Redriver, which is designed to support 40GbE (40G-CR4/KR4/SR4/LR4), 10GbE (10G-KR, SFF-8431),
12G SAS-3, PCIe Gen 3.0, and other applications up to 12.5Gbps. The linear nature of the
DS125BR820’s equalization allows the DS125BR820 to preserve the transmit signal characteristics of the
host ASIC, thereby allowing the host and the link partner ASIC to negotiate transmit equalizer coefficients
during Link Training. These results are applicable to other Linear Redriver devices in TI’s signal
conditioning portfolio, including DS125BR111, DS125BR401A, and DS80PCI810.
2
Pre-Channel and Post-Channel Performance Test
This test was conducted by varying the length of channel segments at the input and output of the
DS125BR820, known as pre-channel and post-channel respectively. For each pre- and post-channel
configuration, the transmitter pre- and post-cursor settings were swept, and the number of bit errors was
recorded for 97 seconds (> 1E12 bits). In addition, baseline tests were conducted without the
DS125BR820 Linear Redriver for different lengths of channel. The goal of this test was to compare the
system’s region of error-free operation for a given total channel length with and without the DS125BR820.
2.1
Test Setup – Hardware
The ASIC transmitter output is connected to a trace board (pre-channel) and then to the input of the
DS125BR820EVM. The output of the DS125BR820EVM is connected to another trace board (postchannel) followed by the ASIC receiver. In the no-redriver test case, the DS125BR820EVM is removed
and replaced with two female-to-female SMA connectors, leaving only PCB trace between the transmitter
and receiver. A diagram of the test setup with the redriver is shown in Figure 1. A diagram of the
equivalent no-redriver test case is shown in Figure 2.
Figure 1. Test Setup with DS125BR820EVM
Figure 2. Test Setup without Redriver
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Pre-Channel and Post-Channel Performance Test
2.1.1
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DS125BR820EVM
The DS125BR820EVM SMA evaluation kit provides a complete platform to evaluate the signal
conditioning features of the Texas Instruments DS125BR820 redriver. The DS125BR820EVM can be used
for standards compliance testing, performance evaluation, and system prototyping. The equalization
settings (EQ) and output differential amplitude (VOD) can be adjusted by strapping control pins to the
proper logic levels, or register programming through SMBus serial interface.
Figure 3. DS125BR820EVM Top Side
2.1.2
ASIC Transmitter
A generic, commercially-available transmitter was used as the source of the 10.3125 Gbps and 12.5 Gbps
PRBS31 data in this test. The differential output amplitude was configured to be 780 mV peak-to-peak. A
frequency offset of ~210 ppm was introduced between the transmitter and receiver. The transmitter
sweeps pre-cursor values from -3.1 dB to 0 dB (-15% to 0%) and post-cursor from -10.5 dB to 0 dB (-35%
to 0%).
2.1.3
ASIC Receiver
A generic, commercially-available receiver was used to check the PRBS31 data for bit errors. This
receiver has a continuous-time linear equalizer (CTLE) with up to 14 dB of equalization capability as well
as a five-tap decision feedback equalizer (DFE). Both the CTLE and DFE are automatically adapted in
real time to optimize the post-equalized eye height.
2.1.4
FR4 Microstrip Trace Boards
Various FR4 differential microstrip trace boards are used to mimic pre- and post-channel conditions of a
real system. These boards vary in length from 5 to 40 inches (4 mil trace width) in steps of 5 inches.
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Pre-Channel and Post-Channel Performance Test
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2.2
Test Setup – Device Configuration
The settings used for the DS125BR820 Redriver in these tests are listed in Table 1. Lower EQ settings
may be more suitable for shorter channel lengths.
Table 1. DS125BR820 Settings Used for Testing
EQ SETTING
Value
Level 3
(1)
(2)
(3)
2.3
VOD SETTING
Equivalent Register
Setting (1)
Pin Strap
(3)
1 (1 kΩ to VIH )
Reg_0xF = 0x03
Value
Pin Strap
Equivalent Register
Setting (2)
Level 6
VODA1 = VODB1 = 1
(1 kΩ to VIH (3))
VODA1 = VODB1 = 0
(1 kΩ to GND)
Reg_0x10 = 0xAE
Each channel has its own EQ control register. Reg_0x0F controls channel 0. Reg_0x16 controls channel 1, and so on.
Each channel has its own VOD control register. Reg_0x10 controls channel 0. Reg_0x17 controls channel 1, and so on.
VIH is nominally 2.5 V when the device is in 2.5-V Mode, or 3.3 V when the device is in 3.3-V Mode. For more details, see the
electrical characteristics table of the device datasheet.
Results
The measurements are plotted in a matrix where the x-axis is the post-cursor value in decibels and the yaxis is the pre-cursor value in decibels applied by the ASIC TX. The total error count during the 97 second
test is shown in each point and is color coded to represent the total error range. Green means there were
zero errors, and red represents the maximum number of the error counter, 4,095. Some examples can be
seen in Figure 6 through Figure 11. For all of the data with various channel configurations, see
Appendix A and Appendix B.
Figure 4. 40" (-33.9 dB) Channel
No-Redriver
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Figure 5. 5" (-5.7 dB) Pre- and 35" (-31.9 dB) Postchannel
with Redriver
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Pre-Channel and Post-Channel Performance Test
6
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Figure 6. 45" (-38.2 dB) Channel
No-Redriver
Figure 7. 5" (-5.7 dB) Pre- and 40" (-35.3 dB) Postchannel
with Redriver
Figure 8. 30" (-31.2 dB) Channel
No-Redriver
Figure 9. 5" (-6.8 dB) Pre- and 25" (-27 dB) Post-channel
with Redriver
Figure 10. 35" (-36 dB) Channel
No-Redriver
Figure 11. 10" (-11.9 dB) Pre- and 25" (-27 dB) Postchannel
with Redriver
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NOTE: In addition to comparing the performance of with-redriver and no-redriver cases for similar total
channel lengths, no-redriver tests with a given channel length were compared to with-redriver tests with a
longer channel length for the purposes of demonstrating channel reach extension. This is shown in
Figure 12 and Figure 13 (35” against 45” at 10.3125 Gbps), and Figure 14 and Figure 15 (30” against 35”
at 12.5 Gbps).
Figure 12. 35" (-30.5 dB) Channel
No-Redriver
Figure 13. 5" (-5.7 dB) Pre- and 40" (-35.3 dB) Postchannel
with Redriver
Figure 14. 30" (-31.2 dB) Channel
No-Redriver
Figure 15. 10" (-11.9 dB) Pre- and 25" (-27 dB) Postchannel
with Redriver
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Conclusions
3
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Conclusions
The DS125BR820 Linear Redriver shows a clear improvement in the size of the error-free region for a
given channel length, as shown in Figure 4 through Figure 11. This increase in system margin is a great
advantage because link training happens very quickly and the resulting operating point may not be optimal
due to normal run-to-run variations. Having a larger error-free operating region is helpful to ensure best
chances of link training finding an error-free operating point. Having a larger error-free region is also
beneficial because the system characteristics may change over time due to ambient temperature changes
or voltage supply fluctuations.
Furthermore, Figure 12 through Figure 15 shows it is possible to extend the overall channel reach of the
system by utilizing TI’s linear redrivers. At both 10.3125 Gbps and 12.5 Gbps, similar system margins
were obtained with up to 10 dB additional insertion loss as a result of using the DS125BR820 Linear
Redriver.
TI’s Linear Redrivers add system flexibility thereby relaxing the requirements for the ASIC and simplifying
the process of channel tuning. This can provide advantages in overall system cost, power consumption,
and time to market.
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Appendix A
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10.3125 Gbps Error Count Matrices
The following figures show a comparison between the error count matrices for the with and without
redriver cases for 10.3125 Gbps. Note that 4,095 is the maximum number of errors and the loss in
decibels includes the trace losses of the EVM and all other parts of the test fixture.
Figure 16. 40" (-33.9 dB) Channel
No-Redriver
Figure 17. 5" (-5.7 dB) Pre- and 35" (-31.9 dB) Postchannel
with Redriver
Figure 18. 40" (-33.9 dB) Channel
No-Redriver
Figure 19. 15" (-14.5 dB) Pre- and 25" (-22.9 dB) Postchannel
with Redriver
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Appendix A
10
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Figure 20. 40" (-33.9 dB) Channel
No-Redriver
Figure 21. 25" (-22.9 dB) Pre- and 15" (-14.5 dB) Postchannel
with Redriver
Figure 22. 40" (-33.9 dB) Channel
No-Redriver
Figure 23. 35" (-31.9 dB) Pre- and 5" (-5.7 dB) Postchannel
with Redriver
Figure 24. 45" (-38.2 dB) Channel
No-Redriver
Figure 25. 5" (-5.7 dB) Pre- and 40" (-35.3 dB) Postchannel
with Redriver
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Appendix A
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Figure 26. 45" (-38.2 dB) Channel
No-Redriver
Figure 27. 15" (-14.5 dB) Pre- and 30" (-27.9 dB) Postchannel
with Redriver
Figure 28. 45" (-38.2 dB) Channel
No-Redriver
Figure 29. 30" (-27.9 dB) Pre- and 15" (-14.5 dB) Postchannel
with Redriver
Figure 30. 45" (-38.2 dB) Channel
No-Redriver
Figure 31. 40" (-35.3 dB) Pre- and 5" (-5.7 dB) Postchannel
with Redriver
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Appendix B
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12.5 Gbps Error Count Matrices
The following figures show a comparison between the error count matrices for the with and without
redriver cases for 12.5 Gbps. Note that 4,095 is the maximum number of errors and the loss in decibels
includes the trace losses of the EVM and all other parts of the test fixture.
12
Figure 32. 30" (-31.2 dB) Channel
No-Redriver
Figure 33. 5" (-6.8 dB) Pre- and 25" (-27 dB) Postchannel
with Redriver
Figure 34. 30" (-31.2 dB) Channel
No-Redriver
Figure 35. 10" (-11.9 dB) Pre- and 20" (-22.1 dB) Postchannel
with Redriver
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Appendix B
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Figure 36. 30" (-31.2 dB) Channel
No-Redriver
Figure 37. 20" (-22.1 dB) Pre- and 10" (-11.9 dB) Postchannel
with Redriver
Figure 38. 30" (-31.2 dB) Channel
No-Redriver
Figure 39. 25" (-27 dB) Pre- and 5" (-6.8 dB) Postchannel
with Redriver
Figure 40. 35" (-36 dB) Channel
No-Redriver
Figure 41. 5" (-6.8 dB) Pre- and 30" (-32.9 dB) Postchannel
with Redriver
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Appendix B
14
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Figure 42. 35" (-36 dB) Channel
No-Redriver
Figure 43. 10" (-11.9 dB) Pre- and 25" (-27 dB) Postchannel
with Redriver
Figure 44. 35" (-36 dB) Channel
No-Redriver
Figure 45. 25" (-27 dB) Pre- and 10" (-11.9 dB) Postchannel
with Redriver
Figure 46. 35" (-36 dB) Channel
No-Redriver
Figure 47. 30" (-32.9 dB) Pre- and 5" (-6.8 dB) Postchannel
with Redriver
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Notice applicable to EVMs not FCC-Approved:
This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit
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This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not
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Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to
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FCC Interference Statement for Class A EVM devices
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FCC Interference Statement for Class B EVM devices
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
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can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
•
•
•
•
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
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3.2.1
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Concerning EVMs Including Radio Transmitters:
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:
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Concernant les EVMs avec appareils radio:
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Concerning EVMs Including Detachable Antennas:
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Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et
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輸入される評価用キット、ボードについては、次のところをご覧ください。
http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page
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by TI as conforming to Technical Regulations of Radio Law of Japan.
If User uses EVMs in Japan, not certified to Technical Regulations of Radio Law of Japan, User is required by Radio Law of
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1.
2.
3.
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Enforcement of Radio Law of Japan,
Use EVMs only after User obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to
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Use of EVMs only after User obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan
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【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて
いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの
措置を取っていただく必要がありますのでご注意ください。
1.
2.
3.
電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用
いただく。
実験局の免許を取得後ご使用いただく。
技術基準適合証明を取得後ご使用いただく。
なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。
上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ
ンスツルメンツ株式会社
東京都新宿区西新宿6丁目24番1号
西新宿三井ビル
3.3.3
Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page
電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧くださ
い。http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page
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4
EVM Use Restrictions and Warnings:
4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT
LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS.
4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling
or using the EVM, including without limitation any warning or restriction notices. The notices contain important safety information
related to, for example, temperatures and voltages.
4.3 Safety-Related Warnings and Restrictions:
4.3.1
User shall operate the EVM within TI’s recommended specifications and environmental considerations stated in the user
guide, other available documentation provided by TI, and any other applicable requirements and employ reasonable and
customary safeguards. Exceeding the specified performance ratings and specifications (including but not limited to input
and output voltage, current, power, and environmental ranges) for the EVM may cause personal injury or death, or
property damage. If there are questions concerning performance ratings and specifications, User should contact a TI
field representative prior to connecting interface electronics including input power and intended loads. Any loads applied
outside of the specified output range may also result in unintended and/or inaccurate operation and/or possible
permanent damage to the EVM and/or interface electronics. Please consult the EVM user guide prior to connecting any
load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative.
During normal operation, even with the inputs and outputs kept within the specified allowable ranges, some circuit
components may have elevated case temperatures. These components include but are not limited to linear regulators,
switching transistors, pass transistors, current sense resistors, and heat sinks, which can be identified using the
information in the associated documentation. When working with the EVM, please be aware that the EVM may become
very warm.
4.3.2
EVMs are intended solely for use by technically qualified, professional electronics experts who are familiar with the
dangers and application risks associated with handling electrical mechanical components, systems, and subsystems.
User assumes all responsibility and liability for proper and safe handling and use of the EVM by User or its employees,
affiliates, contractors or designees. User assumes all responsibility and liability to ensure that any interfaces (electronic
and/or mechanical) between the EVM and any human body are designed with suitable isolation and means to safely
limit accessible leakage currents to minimize the risk of electrical shock hazard. User assumes all responsibility and
liability for any improper or unsafe handling or use of the EVM by User or its employees, affiliates, contractors or
designees.
4.4 User assumes all responsibility and liability to determine whether the EVM is subject to any applicable international, federal,
state, or local laws and regulations related to User’s handling and use of the EVM and, if applicable, User assumes all
responsibility and liability for compliance in all respects with such laws and regulations. User assumes all responsibility and
liability for proper disposal and recycling of the EVM consistent with all applicable international, federal, state, and local
requirements.
5.
Accuracy of Information: To the extent TI provides information on the availability and function of EVMs, TI attempts to be as accurate
as possible. However, TI does not warrant the accuracy of EVM descriptions, EVM availability or other information on its websites as
accurate, complete, reliable, current, or error-free.
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6.
Disclaimers:
6.1 EXCEPT AS SET FORTH ABOVE, EVMS AND ANY WRITTEN DESIGN MATERIALS PROVIDED WITH THE EVM (AND THE
DESIGN OF THE EVM ITSELF) ARE PROVIDED "AS IS" AND "WITH ALL FAULTS." TI DISCLAIMS ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, REGARDING SUCH ITEMS, INCLUDING BUT NOT LIMITED TO ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF ANY
THIRD PARTY PATENTS, COPYRIGHTS, TRADE SECRETS OR OTHER INTELLECTUAL PROPERTY RIGHTS.
6.2 EXCEPT FOR THE LIMITED RIGHT TO USE THE EVM SET FORTH HEREIN, NOTHING IN THESE TERMS AND
CONDITIONS SHALL BE CONSTRUED AS GRANTING OR CONFERRING ANY RIGHTS BY LICENSE, PATENT, OR ANY
OTHER INDUSTRIAL OR INTELLECTUAL PROPERTY RIGHT OF TI, ITS SUPPLIERS/LICENSORS OR ANY OTHER THIRD
PARTY, TO USE THE EVM IN ANY FINISHED END-USER OR READY-TO-USE FINAL PRODUCT, OR FOR ANY
INVENTION, DISCOVERY OR IMPROVEMENT MADE, CONCEIVED OR ACQUIRED PRIOR TO OR AFTER DELIVERY OF
THE EVM.
7.
USER'S INDEMNITY OBLIGATIONS AND REPRESENTATIONS. USER WILL DEFEND, INDEMNIFY AND HOLD TI, ITS
LICENSORS AND THEIR REPRESENTATIVES HARMLESS FROM AND AGAINST ANY AND ALL CLAIMS, DAMAGES, LOSSES,
EXPENSES, COSTS AND LIABILITIES (COLLECTIVELY, "CLAIMS") ARISING OUT OF OR IN CONNECTION WITH ANY
HANDLING OR USE OF THE EVM THAT IS NOT IN ACCORDANCE WITH THESE TERMS AND CONDITIONS. THIS OBLIGATION
SHALL APPLY WHETHER CLAIMS ARISE UNDER STATUTE, REGULATION, OR THE LAW OF TORT, CONTRACT OR ANY
OTHER LEGAL THEORY, AND EVEN IF THE EVM FAILS TO PERFORM AS DESCRIBED OR EXPECTED.
8.
Limitations on Damages and Liability:
8.1 General Limitations. IN NO EVENT SHALL TI BE LIABLE FOR ANY SPECIAL, COLLATERAL, INDIRECT, PUNITIVE,
INCIDENTAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES IN CONNECTION WITH OR ARISING OUT OF THESE
TERMS ANDCONDITIONS OR THE USE OF THE EVMS PROVIDED HEREUNDER, REGARDLESS OF WHETHER TI HAS
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. EXCLUDED DAMAGES INCLUDE, BUT ARE NOT LIMITED
TO, COST OF REMOVAL OR REINSTALLATION, ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES, RETESTING, OUTSIDE COMPUTER TIME, LABOR COSTS, LOSS OF GOODWILL, LOSS OF PROFITS,
LOSS OF SAVINGS, LOSS OF USE, LOSS OF DATA, OR BUSINESS INTERRUPTION. NO CLAIM, SUIT OR ACTION SHALL
BE BROUGHT AGAINST TI MORE THAN ONE YEAR AFTER THE RELATED CAUSE OF ACTION HAS OCCURRED.
8.2 Specific Limitations. IN NO EVENT SHALL TI'S AGGREGATE LIABILITY FROM ANY WARRANTY OR OTHER OBLIGATION
ARISING OUT OF OR IN CONNECTION WITH THESE TERMS AND CONDITIONS, OR ANY USE OF ANY TI EVM
PROVIDED HEREUNDER, EXCEED THE TOTAL AMOUNT PAID TO TI FOR THE PARTICULAR UNITS SOLD UNDER
THESE TERMS AND CONDITIONS WITH RESPECT TO WHICH LOSSES OR DAMAGES ARE CLAIMED. THE EXISTENCE
OF MORE THAN ONE CLAIM AGAINST THE PARTICULAR UNITS SOLD TO USER UNDER THESE TERMS AND
CONDITIONS SHALL NOT ENLARGE OR EXTEND THIS LIMIT.
9.
Return Policy. Except as otherwise provided, TI does not offer any refunds, returns, or exchanges. Furthermore, no return of EVM(s)
will be accepted if the package has been opened and no return of the EVM(s) will be accepted if they are damaged or otherwise not in
a resalable condition. If User feels it has been incorrectly charged for the EVM(s) it ordered or that delivery violates the applicable
order, User should contact TI. All refunds will be made in full within thirty (30) working days from the return of the components(s),
excluding any postage or packaging costs.
10. Governing Law: These terms and conditions shall be governed by and interpreted in accordance with the laws of the State of Texas,
without reference to conflict-of-laws principles. User agrees that non-exclusive jurisdiction for any dispute arising out of or relating to
these terms and conditions lies within courts located in the State of Texas and consents to venue in Dallas County, Texas.
Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief
in any United States or foreign court.
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2015, Texas Instruments Incorporated
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IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other
changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest
issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale
supplied at the time of order acknowledgment.
TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms
and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary
to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily
performed.
TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and
applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide
adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or
other intellectual property right relating to any combination, machine, or process in which TI components or services are used. Information
published by TI regarding third-party products or services does not constitute a license to use such products or services or a warranty or
endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the
third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration
and is accompanied by all associated warranties, conditions, limitations, and notices. TI is not responsible or liable for such altered
documentation. Information of third parties may be subject to additional restrictions.
Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service
voids all express and any implied warranties for the associated TI component or service and is an unfair and deceptive business practice.
TI is not responsible or liable for any such statements.
Buyer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-related requirements
concerning its products, and any use of TI components in its applications, notwithstanding any applications-related information or support
that may be provided by TI. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which
anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause
harm and take appropriate remedial actions. Buyer will fully indemnify TI and its representatives against any damages arising out of the use
of any TI components in safety-critical applications.
In some cases, TI components may be promoted specifically to facilitate safety-related applications. With such components, TI’s goal is to
help enable customers to design and create their own end-product solutions that meet applicable functional safety standards and
requirements. Nonetheless, such components are subject to these terms.
No TI components are authorized for use in FDA Class III (or similar life-critical medical equipment) unless authorized officers of the parties
have executed a special agreement specifically governing such use.
Only those TI components which TI has specifically designated as military grade or “enhanced plastic” are designed and intended for use in
military/aerospace applications or environments. Buyer acknowledges and agrees that any military or aerospace use of TI components
which have not been so designated is solely at the Buyer's risk, and that Buyer is solely responsible for compliance with all legal and
regulatory requirements in connection with such use.
TI has specifically designated certain components as meeting ISO/TS16949 requirements, mainly for automotive use. In any case of use of
non-designated products, TI will not be responsible for any failure to meet ISO/TS16949.
Products
Applications
Audio
www.ti.com/audio
Automotive and Transportation
www.ti.com/automotive
Amplifiers
amplifier.ti.com
Communications and Telecom
www.ti.com/communications
Data Converters
dataconverter.ti.com
Computers and Peripherals
www.ti.com/computers
DLP® Products
www.dlp.com
Consumer Electronics
www.ti.com/consumer-apps
DSP
dsp.ti.com
Energy and Lighting
www.ti.com/energy
Clocks and Timers
www.ti.com/clocks
Industrial
www.ti.com/industrial
Interface
interface.ti.com
Medical
www.ti.com/medical
Logic
logic.ti.com
Security
www.ti.com/security
Power Mgmt
power.ti.com
Space, Avionics and Defense
www.ti.com/space-avionics-defense
Microcontrollers
microcontroller.ti.com
Video and Imaging
www.ti.com/video
RFID
www.ti-rfid.com
OMAP Applications Processors
www.ti.com/omap
TI E2E Community
e2e.ti.com
Wireless Connectivity
www.ti.com/wirelessconnectivity
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2015, Texas Instruments Incorporated
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