DC1880A - Demo Manual

DEMO MANUAL DC1880A
LTC2874
Quad IO-Link Master
Hot Swap Controller and PHY
Description
Demonstration circuit 1880A showcases the LTC®2874, a
quad Hot Swap™ controller and PHY suitable for IO-Link®
master and other applications. DC1880A operates from
an external supply VDD and utilizes the DC590 USB serial
controller board to communicate with the LTC2874 using
SPI protocol.
Performance Summary
Design files for this circuit board are available at
http://www.linear.com/demo/DC1880A
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Hot
Swap, QuikEval and Linduino are trademarks of Linear Technology Corporation. IO-Link is
a registered trademark of PROFIBUS User Organization (PNO). All other trademarks are the
property of their respective owners.
Specifications are at TA = 25°C, VDD = 24V, and VL = 3.3V.
SYMBOL
PARAMETER
CONDITIONS
MIN
VDD
Input Supply Range
24VMODE = 0
24VMODE = 1
8
20
ΔVACL
L+ Analog Current Limit Voltage
ΔVACL = VSENSE+ – VSENSE–
VL+ = 0V, FLDBK_MODE = 1
VL+ = VDD – 1V
Start-Up, 2XPTC Enabled, VL+ > 18V
9.2
42
16.7
50
100
24.2
58
ΔVGATE
External N-Channel Gate Drive
(VGATE – VL+)
IGATE = –1µA
VDD = 17V to 30V
VDD = 8V
10
4.5
13
15
15
V
V
V
VRQH,
VRQL
CQ Residual Voltage
Output High, ICQ = –100mA
Output Low, ICQ = 100mA
1.2
1.1
1.6
1.5
V
V
IQPKH,
IQPKL
Wake-Up Request (WURQ) Current
IQH, IQL
CQ Current Limit
fDTR
Maximum Data Transfer Rate
tWU
WURQ Pulse Duration
SCK Frequency
fDTR = 4nF
SLEW = 0
SLEW = 1
MAX
30
30
±500
±700
±110
±160
UNITS
V
V
mV
mV
mV
mA
±230
38.4
230.4
75
50% Duty Cycle
TYP
mA
kb/s
kb/s
80
85
µs
20
MHz
dc1880af
1
DEMO MANUAL DC1880A
Quick Start Procedure
Figure 1. Proper Setup
2
dc1880af
DEMO MANUAL DC1880A
Quick Start Procedure
DC1880A is a 6-layer demonstration board. An LDO is
included to optionally derive the VL logic supply from
the VDD input supply. An LED lights up when the IRQ pin
signals interrupt requests.
5. Before connecting the input power supply to the
DC1880A board, verify the voltage is below 40V
(normally between 8V and 30V) and that the supply
is turned off.
1. Install, or update as needed, Linear Technology's
QuikEval™ evaluation software on the PC. See Using
the LTC2874 Software section for more information.
6. Connect the power supply between VDD and GND on
the DC1880A board as shown in Figure 1.
2. Connect the DC590 board to the PC with a standard
USB A/B cable.
3. Connect the DC1880A board to the DC590 board using
the 14-conductor ribbon cable supplied with the DC590
board.
4. Choose the source for the VL logic supply—the DC590,
the LDO on the DC1880A, or either if both are set to
the same voltage:
a. Set the DC1880A LDO jumpers (JP11 and JP12) and
DC590 VCCIO jumper (JP6) to one of the combinations listed in Table 1. Default jumper positions set
both boards to 5V.
b. When using a Linduino™ One instead of a DC590
board, set the DC1880A LDO to 5V (JP11 = 5.0V)
or disable it (JP12 = OPEN).
7. Connect line interface cables (up to 20m long) to either
the screw-terminal blocks (J1-J4) or the IO-Link connectors (J5-J8).
8. Turn on the 24V power supply and verify that the IRQ
LED on the DC1880A board is lit. (The LTC2874 is
signalling that one or more of its supplies had been
low.)
9. Launch the GUI software. Refer to the Using the
LTC2874 Software section for more information on
how to control the LTC2874 using the GUI.
10.Clear the IRQ condition by clearing any Supply Event
bits that are set. On the Events tab, simply click on any
lamps that are lit.
11.Refer to the Additional Information section and the
data sheet for operating details.
dc1880af
3
DEMO MANUAL DC1880A
Additional Information
VL Logic Supply
Table 3. CQ Driver Output Level Configuration
Table 1 lists several ways to supply power to the VL pin.
Methods 1a/b/c are recommended for most purposes.
Table 1. Recommended Options for Powering the VL Supply
METHOD
DC590
JP6
DC1880A
JP12
DC1880A
JP11
SOURCE FOR
VL POWER
1a
1b
1c
5V*
3.3V
OPEN (2.7V)
ON*
ON*
ON*
5V*
3.3V
OPEN (2.9V)
LDO or DC590
LDO or DC590
LDO or DC590
2
EXT
ON*
X**
LDO
3
EXT
OPEN
X**
DC1880A VL TURRET
4
5V* or 3.3V
OPEN
X**
DC590
JP2/4/8/10
SETTING
TXD
TURRET
DRVEN
BIT
CQ DRIVER
MODE*
CQ
LEVEL
GND
GND/VL
EXT
DB9
X
X
L/H
X
X
X
X
H/L**
OFF
ON
ON
ON
L
H/L
H/L
H/L
* From Table 2
** RS232 transceiver U2 inverts
Alternatively, operate the CQ drivers solely via the SPI
interface by tying TXD low and controlling the DRVEN
register bits. This method is suitable for SIO mode and
switching at or below COM2 data rates (38.4kb/s).
* (Default)
** Including OPEN (2.9V)
TVS Protection
L+ Power Supply Outputs
The CQ and L+ pins are protected by 36V TVS diodes for
cable-driving applications.
Enable the L+ power supply outputs by setting their
respective EN_L+ register bits high.
CQ Line Driver Outputs
Enable the CQ line drivers either by input pin (using the
TXEN turrets and/or jumpers JP1/3/7/9) or via the SPI
interface (by setting DRVEN register bits high). See Table 2.
Table 2. CQ Driver Mode Configuration
JP1/3/7/9
SETTING
TXEN
TURRET
DRVEN
BIT
CQ DRIVER
MODE
GND
VL
X
EXT
X
X
X
L/H
0
X
1
0
OFF
ON
ON
OFF/ON
Control the output CQ states using the TXD turrets and/
or jumpers JP2/4/8/10. See Table 3.
Serial Port
A DB9 connector enables CQ data to be sent (for one or
more ports) and received (for one port) using PC software
such as a serial terminal program. Jumper JP5 enables
the required RS-232 transceiver.
Select the desired combination of drivers by setting one
or more of JP2/4/8/10 to the DB9 position. Select one CQ
receiver using JP6.
L+ Isolation
If L+ isolation is not needed, Schottky diodes D1-D4 may
be replaced with 0Ω resistors.
Interrupts
The LTC2874 includes an open-drain interrupt line for
signaling the host controller when it needs service. This
signal is accessible on the DC1880A board at the IRQ test
point. An LED is also included for convenience.
4
dc1880af
DEMO MANUAL DC1880A
Additional Information
Jumpers
JP1/3/7/9: Port 4/3/2/1 CQ Driver Enables. See Table 2.
Default position VL.
JP5: COM PORT Enable. Connects RS232 transceiver U2
to VL logic supply. Default position ON.
JP2/4/8/10: Port 4/3/2/1 Data Input to CQ Driver. See
Table 3. Default position GND.
JP11: VL Select. Programs LDO voltage to 2.9V (OPEN),
3.3V, 5V, or 5.5V. Default position 5V.
JP6: RXDn COM Port Select. Determines which receiver
output (RXD1/2/3/4, if any) is connected to the serial port.
Default position RXD1.
JP12: LDO On. Enables LDO which derives VL logic supply from VDD supply voltage input. Default position ON.
JP13: GND Shield. Shorts shields of J5-8 to GND. Default
position OPEN.
dc1880af
5
DEMO MANUAL DC1880A
Using the DC1880A Software
Introduction
Reset Button
Linear Technology’s QuikEval software provides a quick
and easy way to evaluate most aspects of LTC2874 operation. It operates a SPI interface that reads or writes from
the 14 onboard registers via a DC590 serial controller.
This button issues a SPI Reset command, returning all
registers to default values.
Install QuikEval BEFORE connecting the DC1880A to the
USB port of the PC. Download and run the installation
program from http://www.linear.com/software and follow
the onscreen instructions. The LTC2874 GUI will launch
automatically when the PC begins communicating with
the DC1880A via the serial controller. Thereafter, start
the GUI by running QuikEval from:
This tab contains lamps that map to Event Register bits.
A lamp that is on indicates that the corresponding bit in
the LTC2874 Event Register has been set. Clicking on a
lamp will clear the Event bit if the condition no longer
persists. Event Register behavior is sticky, meaning each
lamp stays on until cleared.
C:\Program Files\LTC\QuikEval\quikeval.exe
If the QuikEval software was installed previously, update
it to the latest version using Tools > Update Program.
The LTC2874 GUI is composed of a main window having
three tabs, and a Register Map window. The Ports tab
(Figure 2) contains controls and monitors that are unique to
each individual port. The Timers and Globals tab (Figure 3)
contains controls and monitors that are common to all
ports. The Events tab (Figure 4) provides access to event
monitoring registers. The Register Map window (Figure 5)
provides access to all register bits via an alternate format.
Events Tab
The check boxes control which events will cause IRQ to
signal.
Register Map
This window presents all register bits in an alternate format.
Change register values directly by clicking on individual
bits, using arrow widgets, or by entering numeric values.
Changed bits appear yellow until either committed to the
LTC2874 by pressing the Write and Update button, or
cleared by pressing the Discard Unwritten Changes button.
The LTC2874 GUI begins communicating with the DC1880A
automatically. Once running, it continuously polls the
LTC2874 registers to monitor status.
The Save Current Values button saves the LTC2874 register
values to a text file. The Load Saved Values button loads
the register values from one such file into the Register Map
window. (Write and Update will then configure LTC2874
accordingly.)
Connect/Disconnect Button
Running QuikEval GUI Using Linduino One
The Disconnect button disables the SPI interface and most
of the GUI. The Connect button restarts SPI polling and
activates the complete GUI.
The QuikEval GUI software for DC1880A may be operated
using a Linduino One (DC2026) with the DC590 emulator
sketch in place of the DC590. When using this USB-isolated
Arduino-compatible demonstration board, set the DC1880A
LDO to 5V (JP11=5.0V) or disable it (JP12=OPEN).
6
dc1880af
DEMO MANUAL DC1880A
Using the DC1880A Software
Figure 2. Main Window, Ports Tab
dc1880af
7
DEMO MANUAL DC1880A
Using the DC1880A Software
Figure 3. Main Window, Timers and Globals Tab
8
dc1880af
DEMO MANUAL DC1880A
Using the DC1880A Software
Figure 4. Main Window, Events Tab
Figure 5. Register Map Window
dc1880af
9
DEMO MANUAL DC1880A
Troubleshooting Guide
1. Problem: LTC2874 program doesn't download and
install automatically.
4. Problem: Unsuccessful communication with the
LTC2874. (Error 5)
Solution: Get the latest QuikEval software either by
updating QuikEval from its pull-down menu (Tools >
Update Program), or by installing the latest version
directly from: www.linear.com/software.
2. Problem: DC590 controller board not detected.
(Error 1)
Solution: Connect to PC using USB A/B cable.
3. Problem: LTC2874 not detected. (Error 2)
Solution: Ensure that the DC590 ribbon cable is connected and that VL power is applied. See Table 1.
10
Solution: Check DC590 ribbon and USB connections.
Usually, this error indicates that one was disconnected
while the program was running.
5. Problem: Invalid value read from the LTC2874.
(Error 6)
Solution: Ensure VL supply power is applied correctly.
Referring to Table 1, check LDO jumper on the DC1880A
and JP6 on the DC590.
6. Problem: GUI is gray-colored and inactive.
Solution: Press Connect button.
dc1880af
DEMO MANUAL DC1880A
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
CAP, 1µF 20%, 16V, X7R, 0603
TDK, C1608X7R1C105M
Required Circuit Components
1
1
C1
2
1
C2
CAP, 1µF 10%, 50V, X7R, 0805
MURATA, GRM21BR71H105KA12L
3
1
C9
CAP, ALUMINUM, 100µF, 20%, 63V
UCC, EMZA630ADA101MJA0G
4
8
D5-12*
DIODE, TVS, 36V, SMA
STM, SM6T36A
5
4
Q1-4
TRANSISTOR, NFET, SOT-223
FAIRCHILD, FQT7N10TF
6
4
R1-4
RES, 10Ω,1%, 0603
AAC, CR16-10R0FM
7
4
R25-28
RES, 0.2Ω, 1%, 0805
SUSUMO, RL1220S-R20-F
8
1
U1
IC, QUAD IO-LINK MASTER HOT SWAP CONTROLLER
AND PHY
LINEAR TECH, LTC2874IFE
CAP, 1µF, 20%, 16V X7R, 0603
TDK, C1608X7R1C105M
Additional Demo Board Circuit Components
1
3
C3,C4,C6
2
1
C5
CAP, 0.22µF, 10%, 16V X7R, 0603
TDK, C1608X7R1C224K
3
1
C7
CAP, 0.1µF, 10%, 25V X7R, 0603
TDK, C1608X7R1E104K
AVX, TAJD475K050R
4
1
C8
CAP, TANTALUM, 4.7µF, 20%, 7343 50V
5
0
C10-21
OPTIONAL
6
4
D1-4**
DIODE, SCHOTTKY, 1A, 100V
FAIRCHILD, S100
7
1
D13
LED, RED
PANASONIC, LN1251C
8
1
L1
INDUCTOR, 10µH, 0.5Ω, 0.3A, 0806
TAIYO-YUDEN, CBC2016T100M
9
9
R5-12, R24
RES, 100, 5%, 1206
AAC, CR18-101JM
10
1
R22
RES, 4.99k, 1%, 0603
AAC, CR16-4991FM
11
3
R13-15
RES, 4.99k, 1%, 0603
AAC, CR16-4991FM
12
1
R16
RES, 100k, 1%, 0603
AAC, CR16-1003FM
13
1
R17
RES, 75k, 1%, 0603
VISHAY, CRCW060375K0FKEA
14
1
R18
RES, 10k, 1%, 0603
AAC, CR16-1002FM
15
1
R19
RES, 309k, 1%, 0603
VISHAY, CRCW0603309KFKEA
16
1
R20
RES, 59k, 1%, 0603
AAC, CR16-5902FM
17
1
R21
RES, 47.5k, 1%, 0603
AAC, CR16-4752FM
18
1
R23
RES, 680, 1%, 0603
AAC, CR16-681FM
19
0
R29-32
OPTIONAL
20
1
U2
IC, RS232 TRANSCEIVER
LINEAR TECH, LTC2802CDE
21
1
U3
IC, LDO
LINEAR TECH, LT3012EFE
22
1
U4
IC, SERIAL EEPROM 2k
MICROCHIP, 24LC025-I/ST
TURRET
MILL-MAX, 2308-2-00-80-00-00-07-0
Hardware for Demo Board Only
1
12
E1-6, E8-13
2
6
E7, E14-18
TURRET
MILL-MAX, 2501-2-00-80-00-00-07-0
3
4
J1-4
TERMINAL BLOCK, 5 POSITION, 3.5mm, HEADER
WÜRTH, 691321100005
4
4
J1-4
TERMINAL BLOCK, 5 POSITION, 3.5mm, PLUG
WÜRTH, 691361100005
BINDER, 09-3442-500-05
5
1
J5
JACK, M12, 5 POSITION, FEMALE, STRAIGHT
6
0
J6-8
OPTIONAL
7
1
J9
CONNECTOR, DSUB, 9 PIN FEMALE
* TVS diodes are recommended for cable-driving applications.
** Substitute 0Ω resistors if diodes not desired.
SIGNATRON, DR-E9SB-NJ-001
dc1880af
11
DEMO MANUAL DC1880A
Parts List
ITEM
QTY
8
2
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
J10-11
JACK, BANANA
KEYSTONE, 575-4
9
1
J12
HEADER, 2×7 2mm
MOLEX, 87831-1420
10
5
JP1, JP3, JP7, JP9, JP11
HEADER, 2×3 2mm
SAMTEC, TMM-103-02-L-D
11
5
JP2, JP4, JP6, JP8, JP10
HEADER, 2×4 2mm
SAMTEC, TMM-104-02-L-D
12
2
JP5, JP12
HEADER, 1×2 2mm
SAMTEC, TMM-102-02-L-S
13
12
JP1-12
SHUNT, 2mm
SAMTEC, 2SN-BK-G
14
1
JP13
HEADER, 1×2 0.1"
SAMTEC, TSW-101-07-G-D
15
1
JP13
SHUNT, 0.1"
SAMTEC, SNT-100-BK-G
16
4
STANDOFF, SNAP-ON
KEYSTONE, 8833
12
dc1880af
10
9
8
7
6
5
4
3
2
4.99k
4.99k
R14
R15
A
U4
24LC025
4.99k
R13
J12
DC590
C7
B
0.1uF/25V
CS
1
3
5
7
9
11
13
C5
220nF/16V
SDO
2
4
6
8
10
12
14
R24
100
1206
LINE IN
LINE OUT
SCK
1
6
2
7
3
8
4
9
5
B
SDI
COM PORT
(DB9)
GND
DCD
DSR
RX
RTS
TX
CTS
DTR
J9
SCK
CS
VDD
IRQ
D13
RED
R23
680
IRQ
C
IRQ
R22
4.99k
VL
1uF/16V
C4
GND
6
3
10
8
9
11
12
VCC
VL
PS
MODE
CAP
TOUT
TIN
RIN
ROUT
SW
U2
LTC2802
1uF/16V
C3
4
7
2
1
5
10uH
L1
C
VEE
13
1
SDI
SDO
5
6
7
8
VSS SDA
A2
SCL
A1
WP
A0
VCC
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.
4
3
2
1
TXn
TXD4
RXD4
TXD3
RXD3
TXD2
RXD2
TXD1
RXD1
E2
E3
E5
E6
E9
E10
E12
E13
1uF/16V
C6
JP5
D
1206
R6
100
1206
R8
100
1206
R10
100
1206
R12
100
COM PORT
ENABLE
D
VL
GND
EXT
DB9
VL
GND
EXT
DB9
VL
GND
EXT
DB9
VL
GND
EXT
DB9
VL
A
TXD4
JP2
TXD3
JP4
TXD2
JP8
TXD1
JP10
E14
TXEN1
JP9
C8
GND
E17
VL
SDI
SCK
CS
TXEN2
TXEN3
E4
R7
100
1206
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
3.3V
5.0V
5.5V
E
F
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
G
5
4
75k
TXEN4
E1
R5
100
1206
VL
EXT
GND
VL
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
C9
J10
VL
EXT
GND
JP12
LDO
ON
11
13
1uF/50V
0805
100uF/63V
DIA=12.5mm
C2
TXEN4
JP1
10k
R18
SHDN
IN
GND
VDD
8V - 30V
CUSTOMER NOTICE
TXEN3
JP3
6
L+1
SENSE-1
GATE1
CQ1
CQ2
L+2
SENSE-2
GATE2
VDD
SENSE+
L+3
SENSE-3
GATE3
CQ3
CQ4
L+4
SENSE-4
GATE4
TXEN4
47.5k
59k
R21
309k
R20
R19
ADJ
OUT
J11
H
G
H
THIS CIRCUIT IS PROPRIETARY TO
LINEAR TECHNOLOGY AND SUPPLIED FOR
USE WITH LINEAR TECHNOLOGY PARTS.
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT
TO DESIGN A CIRCUIT THAT MEETS CUSTOMER SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS
THE CUSTOMERS RESPONSIBILITY TO VERIFY
PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND
PRINTED CIRCUIT LAYOUT MAY SIGNIFICANTLY
AFFECT CIRCUIT PERFORMANCE OR RELIABILITY.
CONTACT LINEAR TECHNOLOGY APPLICATIONS
ENGINEERING FOR ASSISTANCE.
VL
RXD1
TXD1
TXEN1
IRQ
SDO
RXD2
TXD2
TXEN2
VL
GND
GND
SDI
SCK
CS
RXD3
TXD3
TXEN3
RXD4
TXD4
U1
LTC2874IFE
GND
E15
U3
LT3012
GND
E7
R17
VL
SELECT
JP11
GND
E18
2.9V
R16
100k
VL
EXT
GND
IRQ
SDO
JP7
1uF/16V
C1
4.7uF/16V
3528
TXEN2
E8
R9
100
1206
VL
EXT
GND
RXDn
COM PORT
SELECT
VL
F
GND
VL
2.9V - 5.5V
NOTES: UNLESS OTHERWISE SPECIFIED
TXEN1
VL
RXD4
RXD3
RXD2
RXD1
E11
R11
100
1206
VL
TXn
VL
TXn
VL
TXn
VL
TXn
JP6
E
I
SCALE = NONE
APP ENG. KEITH B.
PCB DES. KEITH B.
0.2
R26
0.2
R28
0.2
R27
0.2
10
10
R2
10
10
OPEN
C12
OPEN
C14
OPEN
C21
OPEN
C20
OPEN
C19
OPEN
C18
DATE:
N/A
SIZE
J
K
LTC2874IFE
DEMO CIRCUIT 1880A
Monday, October 28, 2013
IC NO.
JP13
GND - SHIELD
D12
36V
D11
36V
D10
36V
D9
36V
D8
36V
D7
36V
D6
36V
D5
36V
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
KEITH B.
APPROVED
J4
J3
J2
J1
L
DATE
NC4
C/Q4
L-4
I/Q4
L+4
J8
NC3
C/Q3
L-3
I/Q3
L+3
J7
NC2
C/Q2
L-2
I/Q2
L+2
J6
NC1
C/Q1
L-1
I/Q1
L+1
J5
9-17-12
SHEET
1
L
OF
1
2
REV.
1630 McCarthy Blvd.
Milpitas, CA 95035
LTC CONFIDENTIAL
Phone: (408) 432-1900
FOR CUSTOMER
Fax: (408) 434-0507
USE ONLY
www.linear.com
I/Q4
L+4
NC4
C/Q4
L-4
I/Q3
L+3
NC3
C/Q3
L-3
I/Q2
L+2
NC2
C/Q2
L-2
I/Q1
L+1
NC1
C/Q1
L-1
QUAD INDUSTRIAL BUS MASTER CONTROLLER
TECHNOLOGY
OPEN
C16
Q4
FQT7N10
OPEN
OPEN R32
C17
R4
S100
D4
DESCRIPTION
1ST PROTOTYPE
OPEN
Q3
FQT7N10
OPEN
OPEN R31
C15
R3
S100
D3
K
REVISION HISTORY
C10
Q2
FQT7N10
OPEN
OPEN R30
C13
S100
D2
OPEN
OPEN R29
C11
R1
S100
J
Q1
FQT7N10
TITLE: SCHEMATIC
0805
0805
0805
0805
D1
2
-
R25
REV
ECO
APPROVALS
VDD
E16
I
9
8
7
6
5
4
3
2
1
DEMO MANUAL DC1880A
Schematic Diagram
dc1880af
13
DEMO MANUAL DC1880A
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.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims
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
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
14 Linear Technology Corporation
dc1880af
LT 1213 • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507 ● www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2013
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