DC1942C - Demo Manual

DEMO MANUAL DC1942C
LTC6804-2
Addressable isoSPI
Battery-Stack Monitor
Description
Demonstration circuit 1942C is an addressable isoSPI
battery-stack monitor featuring the LTC6804-2. These
boards can be linked through a 2-wire isolated serial
interface to monitor any number of cells on a stack.
Communication to a PC uses a DC590 USB interface
board. A control program for up to ten stacked boards
has a Graphical User Interface (GUI) to implement the
device command set.
Multiple DC1942C can be controlled using the DC1941B
isoSPI adapter and RJ45 terminated Ethernet patch cables.
Design files for this circuit board are available at
http://www.linear.com/demo
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
QuikEval is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
Hardware Setup (Single-Board)
Separate the screw-terminal section from J1 and wire cell
voltage connections or resistors into the clamping contacts
to provide the input stimulus for the ADC.
Cell voltages are wired from position 4 (most negative
potential of the group) with increasing potentials up to
position 16 (most positive potential).
Alternatively, resistors can be used to simulate battery
cells. For this, connect twelve 100Ω leaded resistors between each contact from position 4 to position 16. Provide
a stack-equivalent power supply connection to position
16 (positive) and position 4 (return). The supply may be
adjusted to provide the desired nominal cell voltage (ex.
40V will be 3.33V/cell).
Make the following connections for one board interfaced
to a PC:
1.Set jumpers on the board per Figure 1.
2.Connect a USB cable from the PC USB port to DC590.
3.Connect a 14-pin ribbon from DC590 to the SPI connector (J2) on DC1942C.
4.Preset a power supply to 9V and connect to VEXT+
(positive) and VEXT– (return). When powered on, a
blue LED will illuminate. The 9V supply will run between
11mA and 30mA typically.
5.Mate the J1 cell-voltage connector.
Figure 1. Connections and Jumpers
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1
DEMO MANUAL DC1942C
Software Setup
QuikEval Driver
To use the DC590B USB Interface board, the PC must
first have the proper driver installed. To do this, download the QuikEval™ software from Linear Technology, at
www.linear.com:
4)Connect the LTC6804 Demoboard to the DC590B with
QuikEval software open.
5)The QuikEval software will recognize when the LTC6804
demo board has been found, and will offer to download
and install the module from the LTC website:
http://www.linear.com/designtools/software/quick_eval.jsp
1)Install the QuikEval software by running the executable
ltcqev.exe. Follow the instructions to connect DC590B.
NOTE: You will be instructed to ensure that the DC590B
is not connected to the PC:
At this point, select cancel (Remember, QuikEval will
not be used to communicate with the LTC6804 demo
board). If you select OK, instead of cancel, QuikEval
will report that the module is not available on the LTC
website.
If you fail to unplug the DC590B, the DC590B driver
FTD2XX.DLL will not install!
2)When installation of QuikEval is complete, close the
QuikEval program.
3)Reopen QuikEval, then connect the DC590B to confirm
that QuikEval software was installed correctly. If properly
installed, QuikEval will show the following message:
If not properly installed, QuikEval will be unable to connect to the DC590B. Please retry the software installation,
with the DC590B disconnected.
2
6)The QuikEval software will open and indicate that the
LTC6804 device has been found. It will also indicate
that there is no module for this device. This is normal
and indicates that QuikEval does not directly control
the LTC6804 demo boards:
7)Close QuikEval Software, as it is no longer needed for
this demosystem.
dc1942cfa
DEMO MANUAL DC1942C
LTC6804 Graphic User Interface
3)Ignore the security warning by selecting Install.
The LTC6804 Graphic User Interface (GUI) is provided in
a zipped file, LTC6804_GUI_Vxx_yyyymmdd.zip.
4)The GUI control panel appears immediately after installation. Subsequent starts of the GUI are done through the
Windows Start menu or the optional Windows Desktop
shortcut icon.
1)Unzip this folder
2)Run the setup.exe file to start installation
Figure 2. GUI Control Panel Start-Up Screen
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3
DEMO MANUAL DC1942C
Operating the Control Screen
First
Figure 2 is the initial start-up screen that appears when
the program is launched. Once power is supplied to the
board from a stack of cells or a power supply, the communication between the PC and the board can be checked.
1: Set Device Mode
Click the Device Select menu, upper left of the GUI, then
click LTC6804-2 Addressable to set the correct GUI mode.
Additional controls will appear and the upper right GUI
label will display LTC6804-2.
2: Read Configuration
Click the command button labeled READ CONFIG. If all
is properly connected and operating the start-up default
configuration of the LTC6804-2 will be read from the board.
The Hex codes for the six bytes of configuration setting will
appear in the CONFIGURATION REGISTERS section in the
boxes labeled CONFIGURATION READ FROM LTC6804-2.
The initial configuration bytes should be 0xF1 for register
0 and 0x00 for the other five bytes. This default configuration is the sleep mode for the LTC6804-2 on DC1942C.
The LTC6804 calculates a 15-bit Packet Error Code, PEC15,
as a 16-bit word and appends it to the data stream each
time it sends out data. The LTC6804 responds to the READ
CONFIG command by sending six bytes. For the six bytes
sent by a READ CONFIG command and received by the
GUI, the control program also calculates a PEC15. The
received PEC15 word and the calculated PEC15 word are
displayed in the top section labeled PACKET ERROR CODE
15-BIT. The oval located at the top of the color coded status
panel for the one board will turn green if the received and
calculated PEC15 words match. Data transmission errors
will produce red warning indications when the PEC15 words
do not match. There is also a display of the PEC15 that
was sent with the most recent command to the LTC6804,
which had to match an internally calculated value to be
accepted as a valid command.
3: Write Configuration
The GUI allows the user to configure the LTC6804, such as
the undervoltage and overvoltage levels, and the operating
state. However, setting the configuration within the GUI
does not change anything within the LTC6804 until the
Write Configuration command is executed. Clicking the
WRITE CONFIG command button sends the configuration
to the LTC6804. When the command is sent, the six Hex
bytes shown in the box labeled CONFIGURATION WRITTEN
TO LTC6804 will become bold type. This box provides the
exact hex values required by the LTC6804 and can be used
to facilitate control program development.
Clicking the READ CONFIG button can see confirmation
that the configuration change was actually made. The six
bytes read back should match the six bytes sent and the
PEC15 should be a match (green PEC oval on stack display).
4
dc1942cfa
DEMO MANUAL DC1942C
OPERATING THE CONTROL SCREEN
When any configuration information is changed on the
screen the WRITE CONFIG command button will be illuminated. This serves as a reminder that this command
still needs to be executed.
5: Read Cell Voltages
NOTE: To get started, it is recommend to set REFUP to 1,
followed by a WRITE CONFIG command. The Watchdog
Timer (WDT) will now be continually serviced with the POLL
ADC command and the stack is ready to be monitored.
Leaving REFUP at the default setting of 0, the WDT times
out in 2 seconds and all configuration information is reset.
4: Program the Cell Monitoring Voltage
Thresholds
The essential function of the LTC6804 is to measure and
report the voltage on each battery cell. This is accomplished
in two steps. First, click on the STARTCELL button. This
commands an A/D conversion of all 12-cell voltages. Next,
use the four buttons in the READ CELLS section to display
the cell voltages. The actual cell voltage measurements
are displayed in groups of 3 as each button is clicked.
NOTE: Before initiating cell measurements, the user can
set the bit-resolution by selecting the desired mode within
the box ADC SETTINGS CONV MODE.
In the section labeled SET VOLTAGE LIMITS the user can
enter voltage values for the overvoltage and undervoltage
thresholds. The voltage value entered will be rounded to
the actual value used by the LTC6804 and displayed in
the box. The voltage ranges for these thresholds is 0V
to 6.5520V.
These monitor thresholds can be applied globally to each
and every cell in the system or customized for the cells
connected to an individual board by clicking the desired
option button. Individual boards are selected for programming by the left hand tabs in multiple board systems.
The READ DISPLAY box has options to display Cell Voltages in VOLTS or HEX. First select VOLTS or HEX then click
on one of the command buttons inside READ CELLS box.
Every time a command button inside the READ CELLS box
is clicked; new data is downloaded from the board and
displayed as selected in VOLTS or HEX.
6: Discharge Cells
Another major feature of the LTC6804 is the ability to
remove charge from individual cells. This can help to
distribute the cell charge evenly over a stack of batteries.
DC1942C contains a P-channel MOSFET in series with a
33Ω resistor across each cell connection. When enabled,
charge is pulled from the cell and energy dissipated in the
switch and resistor.
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5
DEMO MANUAL DC1942C
OPERATING THE CONTROL SCREEN
The START OPEN (WIRE) command button connects the
built in open wire detection circuitry to all cells. This command must be followed by any command buttons inside
the READ CELLS box click to see the result. The OPEN
ISOURCE box provides options to use either PULLUP or
PULLDOWN Open Wire Test Currents. An open wire connection to any cell will be indicated by an abnormally high
voltage measurement for the cell above the open wire and
a near 0V measurement for the cell with the open wire.
Continuous Operation
A check box is provided for each cell to be discharged.
Checking this box (Cell 3 in the above example screenshot)
and then writing the new configuration with a WRITE
CONFIG button push will load the cell.
NOTE: The discharge transistors are automatically turned
off momentarily when measuring cell voltages using the
STARTCELL command. This prevents voltage drop errors
caused by the discharge current and ensures that the true
cell voltage is obtained. The LTC6804 offers the option of
keeping the discharge transistors on while measuring cell
voltages, using the STARTCELL DCC command button.
This command button is illuminated blue when executed.
In this mode, the lower voltage reading includes I*R errors introduced by cabling and connectors, as well as the
load on the cell.
Other Control Features
Additional command buttons are provided on the control
screen. The POLL ADC command button is used to determine if the ADC is busy (in the process of converting).
The result of this command can be observed by monitoring the serial data output line of the SPI interface to the
Bottom Port, J2. There is no indication provided on the
control screen.
6
For convenience, the control panel allows for continuous
operation of the DC1942C board. Using the command
button labeled START CONTINUOUS READ CELLS, the
board control is placed in a continuous loop executing
the following command sequence automatically:
Start cell voltage
Read cell voltage groups A (1-3), B (4-6), C (7-9), and
D (10-12)
Options available are the READ DISPLAY box, ADC
SETTINGS box, OPEN ISOURCE box, and the CONTINUOUS box. The CONTINUOUS box allows the selection of
STARTCELL, STARTOPEN, STARTCELL DCC, and STARTOPEN DCC commands to be executed during continuous
operation. This is useful for monitoring the cell voltage
measurements under different ADC Test Conditions.
dc1942cfa
DEMO MANUAL DC1942C
OPERATING THE CONTROL SCREEN
All values are updated continually (update rate is ~500ms
in FAST or NORMAL and ~750ms in FILTERED Conversion
Mode). While running, the configuration can be changed on
the fly. Simply changing a configuration item (Discharge
cells for example) and clicking the WRITE CONFIG button will implement the new configuration and return to
continuous operation.
A green box with the label ON in the lower right corner
of the GUI indicates that the system is running continuously. A red box with the label OFF means that the system
is stopped and waiting for a new command to be sent.
Datalogging Operation
The GUI program can datalog or store cell voltage results
in a CSV (Comma Separated Value *.csv) file. This feature
is useful in characterizing cell voltages over time. Datalogging operates similarly to continuous operation but has
the added functionality of storing results in a CSV file.
2.Click on the START CONTINUOUS READ CELLS command button to start datalogging onto a new CSV file.
Elapsed Time = Total time of Datalog from start to finish.
Total Data Points = Total data points of Datalog from
start to finish.
Refresh = Time in seconds (s) between each Read Cells
command; also known as Sample or Update Rate.
3.Click on the STOP CONTINUOUS READ CELLS command
button to stop datalogging and close the CSV file.
1.At the upper left of the GUI, click on the Datalog Menu
then Enable Datalog.
4.The CSV file is ready to view. Go to C:\Datalog6804\
folder and open file.
Datalog mode is enabled when a maroon box appears to
the left of the START CONTINUOUS READ CELLS command button and the red box label changes from OFF to
DATALOG OFF. Datalog mode is disabled when the maroon
box disappears and the red box label reverts to OFF.
5.View the CSV file in a compatible spreadsheet software
program such as MS Excel.
NOTE. The *.csv filenames include the time created and
are stored by default into the C:\Datalog6804\ folder. More
details about datalogging are in the file AboutCurrentVersion.txt inside the GUI’s installation folder (normally C:\
Program Files\LTC\MultiCellBatteryMonitor\ LTC6804).
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7
DEMO MANUAL DC1942C
OPERATING THE CONTROL SCREEN
Software Adjustments
The GUI program can control up to ten boards on a stack.
1.Select the number of boards on the stack by sliding the
track bar up or down; located at the bottom left of the
screen.
boards. The intent of this display is to provide a way to
see the status of all cells at a glance. The significance of
the colors used is explained in the legend on the screen.
2.A tab will appear on the left edge of the control panel
for each board on the stack. Clicking on any of these
tabs will transfer control commands and data to and
from the display screen to that selected board.
3.Select whether the ADC’s voltage reference powered
state (Ref Up) and over/under voltage thresholds for
each board are to be the same (GLOBAL) or different for
each board (CUSTOM) and set the Ref Up and voltages
accordingly.
Color Coded Status Panel
The color coded status panel will expand to include all
boards connected in a stack. Each small square in this
array represents an individual battery in the stack of
8
The last page shows the schematic for DC1942C. Consult
the data sheet for detailed information concerning the
operation of the LTC6804-2.
dc1942cfa
DEMO MANUAL DC1942C
Hardware Setup (Multi-Board)
1.Connect a USB cable from the host computer to the
DC590 as in Figure 4.
5.Configure the jumpers of the DC1942C units as shown
in Figure 3.
2.Connect a 14-pin ribbon from DC590 to the SPI connector (J2) of a DC1941 as in Figure 4.
6.Preset a power supply to 9V and connect unpowered to
VEXT+ (positive) and VEXT– (return) of any DC1942C.
3.Refer to the DC1941 manual to configure the jumpers
as a master device for isoSPI.
7.When powered on, blue LEDs will illuminate. The 9V
supply will run about 17mA per board.
4.Connect RJ45 patch cables for isoSPI. A cable will
be connected between the DC1941 (J1) and the first
DC1942C (at J3 usually). The two iso-SPI connectors
on each DC1942C are inter-changeable, so the connection pattern is not important. Build out the isoSPI bus
by adding RJ45 patch cables between each successive
DC1942C as shown in Figure 3.
8.Prepare cell connections and then mate the J1 cell
voltage connectors (they are separable so wiring can
be done safely).
Jumper Settings:
Jumper Settings:
Jumper Settings:
JP1-JP5 ISOMD set to 1
JP6
SWTEN set to 0
JP7-JP10
A0 to A3 to 0,0,0,0
JP11, JP12
EXT power feed
JP13
TERMination to 0
JP1-JP5 ISOMD set to 1
JP6
SWTEN set to 0
JP7-JP10
A0 to A3 to 1,0,0,0
JP11, JP12
EXT power feed
JP13
TERMination to 0
JP1-JP5 ISOMD set to 1
JP6
SWTEN set to 0
JP7-JP10
A0 to A3 to 0,1,0,0
JP11, JP12
EXT power feed
JP13
TERMination to 1
POWER
SUPPLY
9.0V
(7V to 12V)
From DC1941
isoSPI master
+
-
Figure 3. Connecting Multiple DC1942C in an isoSPI Bus
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9
DEMO MANUAL DC1942C
Hardware Setup (Multi-Board)
To DC1942B
isoSPI bus
Ribbon
Cable
DC1941
DC590
USB
Any PC with
GUI installed
Figure 4. Connections for Setting Up isoSPI Master
10
dc1942cfa
DEMO MANUAL DC1942C
Commands Supported (V05 Version)
POLLADC
READ CELL GROUPS (A, B, C and D. Read Volts/Hex)
WRITE CONFIG (REFUP, VUV, VOV, Discharge selected
cells)
READ FLAGS
READ CONFIG
START CELL and OPEN WIRE conversions with and without
discharge connected (ADC Settings: Conversion Mode,
Open Wire Test Current (Open Isource))
READ AUX
START CONTINUOUS read all cells every 500ms.
Commands Not Supported (V05 Version)
SELFTEST
GPIO FUNCTIONS
For the latest software, contact your local LTC sales office. Design files for this circuit board are available. Call
the LTC factory.
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DEMO MANUAL DC1942C
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
Required Circuit Components
1
0
C1-C12
CAP., 0805, OPT
2
2
C13, C23
CAP, 0805 100nF 10% 100V X7R
MURATA GCM21BR72A104KA37L
3
3
C17, C20, C21
CAP, 0603 1µF 10% 16V X7R
MURATA GCM188R71C105KA64D
4
2
C19, C22
CAP, 0603 100nF 10% 25V X7R
MURATA GCM188R71E104KA57D
5
13
C24-C36
CAP, 0603 10nF 10% 50V X7R
MURATA GCD188R71H103KA01
6
2
C37, C40
CAP., 1206 4.7µF, 10%, 25V X7R
MURATA GCM31CR71E475KA55L
7
1
C38
CAP., 0603 4.7nF, 10%, 25V X7R
MURATA, GCM188R71E472KA37D
8
1
C39
CAP., 0603 220pF 10% 25V NPO
AVX, 06033A221KAT2A
9
1
C41
CAP., 1206 1µF 10% 100V X7R
MURATA GCM31CR72A105K
10
0
C42
CAP., 0603 27pF
C0603
11
1
D1
SM ZENER DIODE, SOD-123, CMHZ5264B
CENTRAL SEMI., CMHZ5264B TR
12
1
D2
SM LOW LEAKAGE SILICON DIODE, SOD123
CENTRAL SEMI., CMHD459A TR
13
1
D3
SCHOTTKY DIODE, SOD-123
CENTRAL SEMI, CMMSH1-40 TR
14
4
E1-E4
TURRET
MILL MAX 2308-2-00-80-00-00-07-0
15
13
JP1-JP13
HEADER, 3 PIN, 2mm
SAMTEC TMM-103-02-L-S
16
13
XJP1-XJP13
SHUNT
SAMTEC 2SN-BK-G
17
1
J1
CONNECTOR, 1X16 3.5mm, HORIZ.
WEIDMULLER 1761682001
18
1
J2
HEADER, 2X7 2mm
MOLEX 87831-1420
19
2
J3, J4
Connector RJ45, CACE CODE 00779
TYCO, 5406298-1
20
12
LED1-LED12
LED, 0603 GREEN
LITE-ON LTST-C190KGKT
21
1
LED13
LED, BLUE, LED-ROHM-SML-010MT
ROHM, SML-010BATT86K
22
2
L1, L2
IND., 1206
MURATA BLM31PG330SN1L
23
1
P1
CONN. MATING 1X16 3.5 HORZ
WEIDMULLER 1615770000
24
12
Q1-Q12
XSTR, MOSFET, P-CHANNEL
INFINEON, BSS308PEH6327XT
25
1
Q13
XSTR, NPN, 100V, 2.0A, SOT223
ON SEMI, NSV1C201MZ4
26
17
R1-R12, R49, R51, R56, R64, R80
RES., CHIP, 100Ω 1% 0603
NIC, NRC06F1000TRF
27
12
R13-R24
RES., CHIP, 3.3k, 1% 0603
VISHAY, CRCW06033K30FKEA
28
12
R25-R36
RES., CHIP, 475Ω, 1% 0603
NIC, NRC06F4750TRF
29
12
R37-R48
RES., CHIP, 33Ω, 1% 2512
VISHAY, CRCW251233R0FKEG
12
ALTERNATE FOR R37-R48
RES., CHIP, 33Ω, 5% 2512
NIC, NRC100J330TRF
12
dc1942cfa
DEMO MANUAL DC1942C
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
30
31
1
R52
RES., CHIP, 604Ω, 1% 0603
VISHAY, CRCW0603604RFKEA
1
R53
RES., CHIP, 1.4k, 1% 0603
VISHAY, CRCW06031K40FKEA
32
3
R54, R55, R62
RES., CHIP, 1M, 1% 0603
VISHAY, CRCW06031M00FKEA
33
2
R57, R58
RES., CHIP, 4.99k, 1% 0603
VISHAY, CRCW06034K99FKEA
34
2
R59, R60
RES., CHIP, 22Ω, 1% 0603
VISHAY, CRCW060322R0FKEA
NIC, NRC06Z0TRF
35
1
R61
RES., CHIP, 0Ω, 1% 0603
36
0
R63, R65, R73
RES., CHIP, 0603 OPT
37
4
R69, R70, R71, R72
RES., CHIP, 22k, 1% 0603
VISHAY, CRCW060322K0FKEA
38
1
R74
RES., CHIP, 100k, 1% 0603
VISHAY, CRCW0603100KFKEA
39
2
R75, R77
RES., CHIP, 39.2k, 1% 0603
VISHAY, CRCW060339K2FKEA
40
1
R76
RES., CHIP, 402k, 1% 0603
VISHAY, CRCW0603402KFKEA
41
9
R78, R82-R89
RES., CHIP, 10k, 1% 0603
NIC, NRCF1002TRF
42
1
R79
RES., CHIP, 95.3k, 1% 0603
VISHAY, CRCW060395K3FKEA
43
1
R81
RES., CHIP, 4.7k, 1% 0603
VISHAY, CRCW06034K70FKEA
44
1
T1
XFMR, 1:1, 650mH
HALO, TGR01-A6506V6LF
45
1
T2
TRANSFORMER, PA0648NL
PULSE, PA0648NL
46
1
T3
COMMON MODE FILTERS FOR CAN
TDK, ACT45B-220-2P-TL003
47
1
U1
IC, BATTERY MONITOR, SSOP-48, 5.3MM
LINEAR TECH. LTC6804IG-2#PBF
48
1
U2
IC, 24AA01, SOT23-5, MARKING CODE B1
MICROCHIP TECH. 24AA01T-I/OT
49
1
U3
IC, 24LC025-I/ST
MICROCHIP TECH. 24LC025-I/ST
50
1
U4
IC, LT3511EMS, 16 PIN MSOP
LINEAR TECH. LT3511EMS#PBF
51
1
U5
IC, LTC625, 5IS6, 6-LEAD TSOT-23
LINEAR TECH. LTC6255IS6#PBF
52
1
U6
IC, 8-CHANNEL ANALOG 74HC4051PW
NXP SEMI., 74HC4051PW
53
4
MH1, MH2, MH3, MH4
54
0
STANDOFF, SNAP ON
KEYSTONE_8831
CABLE, 1FT PATCH CAT5
ASSMANN ELEC INC., DK-1611-001/BL
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13
A
B
C
D
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

 


 


 


 






































  





  













  
  
  
 
 
4
  
 
  






 



 



 
























   





 



  





 
   








 









  





























  
  
 
  1% 





 



 



 










































































 









3























 
 
 

















 
-
+








2
































2


 






  



 
 

 







 










 









   






































3













4















































 
 







1




 

 



 






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












 










1


TECHNOLOGY










  



















 
14


5
A
B
C
D
DEMO MANUAL DC1942C
Schematic Diagram
dc1942cfa
A
B
C






5


































4




























































D

4






Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.















3




2













1




 

 



 









TECHNOLOGY
1
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








 






2




 










3


5
A
B
C
D
DEMO MANUAL DC1942C
Schematic Diagram
dc1942cfa
15
DEMO MANUAL DC1942C
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:
This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT
OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety
measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union
directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date
of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU
OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
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arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all
appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or
agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.
Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and
observe good laboratory practice standards. Common sense is encouraged.
This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application engineer.
Mailing Address:
Linear Technology
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Copyright © 2004, Linear Technology Corporation
16 Linear Technology Corporation
dc1942cfa
LT 0314 REV A • PRINTED IN USA
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●
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 LINEAR TECHNOLOGY CORPORATION 2013
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