DC2296 - Demo Manual

DEMO MANUAL DC2296
DC2209 and DC2210
LTC2983
Digital Temperature Measurement System
Description
The DC2296 is the starter kit for demonstrating the performance and ease of use of the LTC®2983, which is a
complete temperature measurement system on a chip.
This kit includes the DC2209 (main demo circuit containing the LTC2983) and the DC2210 (a simple experiment
circuit allowing bread boarding). In addition to the starter
demonstration kit, sensor specific demonstration boards
highlighting the performance of RTDs, thermistors, or
thermocouples are also available.
• Universal Temperature Measurement Board – DC2211
• Thermocouple Board – DC2212
• Dedicated RTD Board – DC2213
• Dedicated Thermistor Board – DC2214
The DC2209 is a member of the QuikEval™ family of demonstration boards. It is designed to allow easy evaluation
of the LTC2983 and may be connected to any one of the
sensor daughter boards.
These daughter boards allow evaluation of the various
LTC2983 sensor types (see Figure 1).
For the serial digital interface, the DC2209 may be connected to the DC2026 Linduino™ One.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2296
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
QuikEval and Linduino are trademarks of Linear Technology Corporation. All other trademarks
are the property of their respective owners.
Figure 1. DC2209 Temperature Measurement Demonstration Board
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DEMO MANUAL DC2296
Quick Start Procedure
Connect one of the five sensor daughter boards (DC2210,
DC2211, DC2212, DC2213 or DC2214) to the DC2209
demo board. Connect the DC2209 to a DC2026 using
the supplied 14-conductor ribbon cable. Connect the
DC2026 to the PC using a standard USB A/B cable. Run
the QuikEval software which the latest version can be
downloaded from the Linear website at www.linear.com/
software. The LTC2983 demo program will be loaded
automatically. Refer to software manual LTC2983DSM
for more detailed information.
The demo software helps program and run the LTC2983.
It can configure the LTC2983, check and save the configuration, run the LTC2983, output the results into a file,
and even create Linduino One ready C code based on
the configuration. The demo software allows the user to
configure the LTC2983 manually or automatically from
data stored in the daughter board EEPROM. Please see
www.linear.com/LTC2983software for the demo software
manual. It includes a short tutorial for getting started. Figure
2 shows a screenshot of the demo software at start-up.
Figure 2. LTC2983 Demo Software
2
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DEMO MANUAL DC2296
Hardware Setup
DC2210 Experimenter Board
(included in DC2296 Kit)
The DC2210 experimenter board (see Figure 3) brings all
20 channels plus the COM connection out to a proto area
and a 24-position terminal block. The user may connect
any of the supported sensors and sense resistors to any
of the LTC2983 inputs in this area. Figure 4 shows the
connection schematic of the DC2210 Experimenter board.
Figure 3. DC2210 Experimenter Board
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DEMO MANUAL DC2296
Hardware Setup
J2
J1
J3
Figure 4. DC2210 Experimenter Board Schematic
4
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DEMO MANUAL DC2296
Hardware Setup
DC2211 Universal Temperature Measurement
Board
The universal temperature measurement board (see Figure
5) allows the user to connect any of the LTC2983 supported sensors to the DC2209 demo board.
Figure 5. DC2211 Universal Temperature Measurement Board
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DEMO MANUAL DC2296
Hardware Setup
The universal temperature measurement board has a
built-in sense resistor for RTD applications as well as a
cold junction sensor diode for thermocouple applications
(see Figure 6 for the DC2211 schematic diagram). The
sense resistor is a 2kΩ ±0.1% 10ppm/°C sense resistor
on channels 1 and 2 which may be used with any of the
supported RTD sensor types. The precise value of this
sense resistor is stored in an on-board EEPROM. The
LTC2983 demo software can read this EEPROM and use
to configure the sense resistor value in the LTC2983’s
configuration memory.
The external interface on the universal temperature measurement board is an 8-position screw-terminal block
with the flowing pinout.
Table 1. DC2211 Terminal Connector Pinout
Position A
LTC2983 CH2 as well as the low side of the on-board 2k
sense resistor
Position B
LTC2983 CH3
Position C
LTC2983 CH4
Position D
LTC2983 CH5
Position E
Common/Ground Connection
Position F
Common/Ground Connection
Position G
Common/Ground Connection
Position H
Common/Ground Connection
J1
R6
J2
R5, 100Ω
R4, 100Ω
R3, 100Ω
R2, 100Ω
R1, 100Ω
Q1
Figure 6. DC2211 Universal Temperature Measurement Board Schematic
6
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DEMO MANUAL DC2296
Hardware Setup
Universal Temperature Measurement
Daughter Board Examples
• Four thermocouples connected to positions A-D with
the negative connections tied to positions E-H using the
on-board diode as cold junction sensor (see Figure 7a
for the schematic and Figure 8a for the corresponding
software configuration).
• A 4-wire RTD connected to positions A-D using the
on-board sense resistor as the ratiometric reference
(see Figure 7b for the schematic and Figure 8b for the
corresponding software configuration).
Figure 7. Universal Temperature Measurement Board Examples
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DEMO MANUAL DC2296
Hardware Setup
Figure 8a. DC2211 Four Thermocouple Software Configuration
8
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DEMO MANUAL DC2296
Hardware Setup
Figure 8b. DC2211 4-Wire RTD Software Configuration
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DEMO MANUAL DC2296
Hardware Setup
DC2212 Thermocouple Daughter Board
The thermocouple board (see Figure 9) demonstrates the
flexibility, accuracy, and low noise features of the LTC2983
thermocouple modes.
If the user wishes to connect external sensors to the
thermocouple board, two universal-type thermocouple
jacks (J2 and J3) are provided (see schematic diagram
Figure 10 and corresponding software configuration
Figure 11). The user may connect any of the LTC2983
supported thermocouples (B, E, J, K, N, R, S, or T) as well
as custom thermocouples through these jacks.
To demonstrate the flexibility of the LTC2983, the thermocouple board includes cold junction diodes (Q1 and Q2)
embedded in each thermocouple socket. Alternatively, a
4-wire PT100 RTD (R5) can be used as the cold junction
sensor for either or both thermocouples.
To demonstrate the low system noise and offset of the
LTC2983, the thermocouple board provides a short to
ground on channel 5.
To demonstrate the accuracy of the LTC2983, the thermocouple board allows the user to connect a thermocouple
calibrator or an external voltage source to CH10 of the
LTC2983 through a pair of banana jacks (J4 and J5).
Figure 9. DC2212 Thermocouple Daughter Board
10
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DEMO MANUAL DC2296
Hardware Setup
Figure 10. DC2212 Thermocouple Board Schematic
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DEMO MANUAL DC2296
Hardware Setup
NOTE: Protection resistors not shown in configuration schematic
Figure 11. DC2212 Software Configuration
12
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DEMO MANUAL DC2296
Hardware Setup
DC2213 Dedicated RTD Board
The DC2213 dedicated RTD board (see Figure 12) demonstrates the flexibility, accuracy, and low noise features
of the LTC2983 RTD sensor modes. The DC2213 provides
several circuits demonstrating the features of the LTC2983.
The DC2213 (see schematic diagram Figure 13 and corresponding software configuration Figure 14) provides a
2kΩ ±0.1% 10ppm/°C sense resistor on channels 2 and
3 which may be used with any of the RTD sensor circuits
on this board. An additional Kelvin connection is also
provided to this sense resistor on channel 1. The precise
measured value of this sense resistor is stored in an onboard EEPROM which the LTC2983 demo software can
read and use to configure the sense resistor value.
To demonstrate the low system noise of the LTC2983,
the dedicated RTD board provides a 0°C PT100 simulator
(100Ω ±0.01% 10ppm/°C) on channels 3 to 6 configured
as a 4-wire sensor. In addition to this the user may use this
circuit to demonstrate how the rotated mode eliminates
measurement error introduced by parasitic thermocouples.
To facilitate this measurement, the DC2213 provides an
external thermocouple interface which acts as a parasitic
thermocouple.
Figure 12. DC2213 Dedicated RTD Board
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DEMO MANUAL DC2296
Hardware Setup
To see the effects of parasitic thermocouples on non-rotated
measurement modes, first measure the on-board 0°C
PT100 simulator in a non-rotated configuration and see
the measurement error as the thermocouple’s temperature
changes. To see the benefit of the rotated measurement
mode, switch from the no rotation/sharing to the rotation/
sharing configuration and see the errors introduced by the
parasitic thermocouple minimized.
In addition to the fixed value RTD simulator, there is also
a variable resistor RTD simulator. This circuit can be used
to demonstrate the range of the various LTC2983 RTD
sensor modes as well as demonstrate the fault detection
capabilities of the LTC2983.
If the user wishes to connect an external RTD to the sensor
board, a 4-position terminal block is provided. The user
may connect any of the LTC2983 supported RTDs as well
as custom RTDs to the DC2209 demo board through this
interface. The interface may be configured for 3 or 4 wire
sensors. To demonstrate the accuracy of the LTC2983,
the user may also connect an RTD calibrator or precision
resistors to this interface.
Figure 13. DC2213 Dedicated RTD Board Schematic
14
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DEMO MANUAL DC2296
Hardware Setup
NOTE: Protection resistors not shown in configuration schematic
Figure 14. DC2213 Software Configuration
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15
DEMO MANUAL DC2296
Hardware Setup
DC2214 DEDICATED Thermistor Board
The DC2214 dedicated thermistor board includes several
circuits (see Figure 15) to demonstrate the flexibility, accuracy, and low noise features of the LTC2983 thermistor
sensor modes.
The DC2214 provides a 10kΩ ±0.1% 15ppm/°C sense
resistor on channels 1 and 2 which is shared with all of
the thermistor sensor circuits on this board (see schematic
diagram Figure 16 and corresponding software configuration Figure 17). The measured value of this sense resistor
is stored in an on-board EEPROM which the LTC2983
demo software can read and use to configure the sense
resistor value.
To demonstrate the low system noise of the LTC2983 the
dedicated thermistor board provides a 25°C 10k thermistor simulator (10kΩ ±0.1% 15ppm/°C) on channels 2-4
configured as a differential sensor. In addition to this the
user may use this circuit to demonstrate how the rotated
mode eliminates measurement error introduced by parasitic
thermocouples. To facilitate this demonstration the DC2214
provides an external thermocouple interface which acts
as a parasitic thermocouple.
To see the effects of parasitic thermocouples on nonrotated measurement modes, first measure the on-board
25°C 10k thermistor simulator in a no-rotation/sharing
configuration and see the measurement error as the
16
thermocouple’s temperature changes. To see the benefit
of the rotated measurement mode, switch to the rotation/
sharing configuration and see the errors introduced by the
parasitic thermocouple disappear (the effects are more
significant with lower excitation current).
The DC2214 also includes a 499kΩ (0.1% 15ppm/°C)
thermistor simulator on channels 9 and 10. Ideally, this
resistor simulates –30.59°C for a 44008 (30k) thermistor
and –51.94°C for a 44006 (10k) thermistor. Note, the 10k
thermistor reports the temperature, but also indicates a
soft fault since the temperature is below the thermistor’s
specified minimum temperature.
In addition to the fixed value thermistor simulators, there
is a variable resistor thermistor simulator as well. This
circuit can be used to demonstrate the range of the various
LTC2983 thermistor sensor modes as well as demonstrate
the fault detection capabilities of the LTC2983.
If the user wishes to connect an external thermistor to the
daughter board, a 2-position terminal block is provided.
The user may connect any of the LTC2983 supported
thermistors as well as custom thermistors to the DC2209
demo board through this interface. To demonstrate the
accuracy of the LTC2983, the user may connect external
resistance standards to this interface.
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DEMO MANUAL DC2296
Hardware Setup
Figure 15. DC2214 Thermistor Daughter Board
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DEMO MANUAL DC2296
Hardware Setup
Figure 16. DC2214 Dedicated Thermistor Board Schematic
18
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DEMO MANUAL DC2296
Hardware Setup
Figure 17. DC2214 Software Configuration
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DEMO MANUAL DC2296
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
DC2209 Required Circuit Components
1
21
C1-C21
CAP., NP0, 100pF 100V, 5%, 0603
MURATA, GRM1885C2A101JA01D
2
7
C22, C24, C25, C30,
C31, C33, C34
CAP., X7R, 10µF 10V, 10%, 0805
MURATA, GRM21BR71A106KE51L
3
7
C23, C26, C27, C28,
C29, C32, C35
CAP., X7R, 0.1µF 25V, 10%, 0603
MURATA, GRM188R71E104KA01D
4
4
E1, E2, E3, E4
TURRET, TESTPOINT 0.064"
MILL-MAX, 2308-2-00-80-00-00-07-0
5
1
J1
CONN., 40P, CON-HIROSE-FX2-40P-1.27DS
HIROSE, FX2-40P-1.27DS
6
1
J2
CONN., HEADER 14POS 2MM VERT GOLD
MOLEX, 87831-1420
7
1
R1
RES., CHIP, 1Ω, 1/10W, 5% 0603
VISHAY, CRCW06031R00FJEA
8
1
R2
RES., CHIP, 100k, 1/10W, 1% 0603
VISHAY, CRCW0603100KFKEA
9
3
R3, R4, R5
RES., CHIP, 4.99k, 1/10W, 1% 0603
VISHAY, CRCW06034K99FKEA
10
1
U1
I.C., LTC2983CLX, LQFP48LX-7X7
LINEAR TECH., LTC2983CLX
11
1
U2
I.C., 24LC025-I/ST, TSSOP8
MICROCHIP, 24LC025-I/ST
12
2
MH1, MH2
STANDOFF, NYLON, 0.25", 1/4"
KEYSTONE, 8831 (SNAP ON)
CAP., X7R, 0.1uF 25V, 10%, 0603
MURATA, GRM188R71E104KA01D
DC2210 Required Circuit Components
1
1
C1
2
1
J1
CONN., 40P, CON-HIROSE-FX2-40S-DAUGHTER
HIROSE, FX2-40S-1.27DS(71)
3
2
J2,J3
CONN., TERM BLOCK 2.54MM 12POS
PHOENIX, 1725753
4
0
R1,R2
RES., 0603
OPT
5
1
R3
RES., CHIP, 4.99k, 1/10W, 1% 0603
PANASONIC, ERJ-3EKF4991V
6
1
U1
I.C., EEPROM 2KBIT 400KHZ 8TSSOP
MICROCHIP, 24LC025-I/ST
7
4
MH1-MH4
STANDOFF, NYLON, 0.25", 1/4"
KEYSTONE, 8831 (SNAP ON)
20
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A
B
C
D
C1
100pF
CH2
C34
10uF
0805
R1
1
C22
10uF
0805
C3
100pF
5
C32
0.1uF
C2
100pF
CH3
CH1
CH4
CH5
13
14
15
16
17
18
19
20
21
22
23
24
CH7
VREFOUT
VREFP
GND
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
CH9
1
V+ 2
5V
6
CS 4
SCK/SCL 7
MOSI/SDA 5
MISO
10
EEVCC 9
EESDA 11
EESCL 12
EEGND 14
AUX
J2
C6
100pF
VREF_BYP
C5
100pF
CH6
HD2X7-079-MOLEX
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
CH9
VREF
C23
0.1uF
C4
100pF
CH8
VDD
C7
100pF
C8
100pF
VDD
C9
100pF
U1
LTC2983
C35
0.1uF
GND CS
CH10
4
SCL
SDA
WP
A2
A1
A0
U2
24LC025-I /ST
SCK SDI
6
5
7
3
2
1
SDO GND
Q1
Q2
Q3
VDD
GND
LDO
RESETN
NCS
SDI
SDO
SCK
INTERRUPT
48
47
46
45
44
43
42
41
40
39
38
37
COM
C12
100pF
R4
4.99k
EEGND
Q1
Q2
Q3
C24
10uF
0805
VDD
CH11
R3
4.99k
C11
100pF
NCS
SDI
SDO
SCK
C10
100pF
CH12
R5
4.99k
WP
C14
100pF
C17
100pF
C18
100pF
VDD
CUSTOMER NOTICE
INTERRUPT
RESET
R2
100k
VDD
CH17
C29
0.1uF
VDD
CH16
C28
0.1uF
VDD
CH15
C27
0.1uF
C16
100pF
CH18
E4
E2
E1
E3
3
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
C20
100pF
2
2
SCALE = NONE
1
REV
J1
A B C D
D1
C1
D2
C2
D3
C3
D4
C4
D5
C5
D6
C6
D7
C7
D8
C8
D9
C9
D10
C10
HIROSE-FX2-40P-1.27DS
B1
A1
B2
A2
B3
A3
B4
A4
B5
A5
B6
A6
B7
A7
B8
A8
B9
A9
B10
A10
DESCRIPTION
1ST PROTOTYPE
CH2
CH4
CH6
CH8
CH10
CH12
CH14
CH16
CH18
CH20
MARK T.
APPROVED
DATE:
N/A
SIZE
DEMO CIRCUIT 2209A
TECHNOLOGY
02/20/2014, 05:24 PM
1
SHEET 1
1
OF 1
24-BIT PRECISION DIGITAL
TEMPERATURE MEASUREMENT SYSTEM
IC NO.
REV.
LTC2983CLX
TITLE: SCHEMATIC
DATE
02-20-14
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
1. ALL CAPACITORS ARE IN MICROFARADS, 0603.
2. ALL RESISTOR ARE IN OHMS, 0603.
MARK T.
KIM T.
CH3
CH1
CH5
CH7
CH9
CH11
CH19
EEVCC
CH17
EESDA
CH15
EESCL
CH13
COM
__
ECO
1
REVISION HISTORY
NOTE: UNLESS OTHERWISE SPECIFIED
C21
100pF
APPROVALS
GND
INTERRUPT
RESET
VDD
C19
100pF
CH19
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
EEVCC
EESDA
EESCL
C15
100pF
VDD
C31
10uF 0805
C26
0.1uF
VDD
CH13
C33 10uF 0805
C30
10uF
0805
C25
10uF
0805
VDD
C13
100pF
3
CH14
4
EEPROM
8
VCC
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.
GND
13
8 GND
3 GND
GND
CH9
12
11
10
9
8
7
6
5
4
3
2
1
GND
VREF_BYP
NC
GND
VDD
GND
VDD
GND
VDD
GND
VDD
GND
CH10
CH11
CH12
CH13
CH14
CH15
CH16
CH17
CH18
CH19
CH20
COM
25
26
27
28
29
30
31
32
33
34
35
36
CH10
CH11
CH12
CH13
CH14
CH15
CH16
CH17
CH18
CH19
CH20
COM
ARRAY
CH20
5
A
B
C
D
DEMO MANUAL DC2296
Schematic Diagram
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DEMO MANUAL DC2296
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
22 Linear Technology Corporation
dc2296fa
LT 1114 REV A • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507 ● www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2014
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