Linear Technology LTC6430-15 User Manual

Page 1
DEMO MANUAL DC2032A
LTC6430-15
50MHz to 1000MHz
75Ω Input/Output CATV
Amplifier
Description
amplifier featuring the LTC®6430-15. The LTC6430-15 has a power gain of 15.2dB and is part of the LTC643X-YY amplifier series.
The DC2032A
demo board is optimized for a frequency range from 50MHz to 1000MHz. It incorporates a mini mum of passive support components to configure the
performance summary
SYMBOL PARAMETER CONDITIONS VALUE/UNIT
Power Supply
V
CC
I
CC
Operating Supply Range All VCC Pins Plus OUT Pins 4.75V to 5.25V
Current Consumption Total Current 160mA
Specifications are at TA = 25°C
amplifier for the CATV applications with 75Ω input and output impedance.
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 of Linear Technology Corporation. All other trademarks are the property of their respective owners.
-
+IN (PIN 24)
–IN (PIN 7)
GND (PINS 8, 14, 17, 23, AND PADDLE 25)
V
(PINS 9, 22)
CC
BIAS AND TEMPERATURE
COMPENSATION
+OUT (PIN 18)
T_DIODE (PIN 16)
–OUT (PIN 13)
GND (PINS 8, 14, 17, 23, AND PADDLE 25)
Figure 1. LTC6430-15 Device Block Diagram
DC2032a F01
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Page 2
DEMO MANUAL DC2032A
Quick start proceDure
Demo circuit 2032A can be set up to evaluate the perfor­mance of the LTC6430-15. Refer to Figures 2 and 3 for proper equipment connections
and follow this procedure:
Single-Tone Measurement:
Connect all test equipment as suggested in Figure 2.
1. The power labels of 5V and GND directly correspond to
the power supply. Typical current consumption of the LTC6430-15 is about 160mA.
2. Apply an input signal to J1. A low distortion, low noise
signal source with an external high order low pass filter will yield the best performance. The input CW signal is –10dBm.
3. Observe the output via J2. The measured power at the
J2 connector should be about 4dBm.
Tw o -Tone Measurement:
Connect all test equipment as suggested in Figure 3.
1. The power labels of 5V and GND directly correspond to
the power supply. Typical current consumption of the LTC6430-15 is about 160mA.
2. Apply to J1 two independent signals f1 and f2 from SG1 and SG2 at 400MHz and 401MHz respectively.
3. Monitor the output tone level on the spectrum analyzer. Adjust signal generator levels such that output power measures 1dBm/tone at the amplifier output J2, after correcting for external cable losses, minimum loss matching
4.
Change the spectrum analyzer’s center frequency and
pads and attenuations.
observe the two IM3 tones at 1MHz below and above the input frequencies. The frequencies of IM3_ IM3_
are 399MHz and 402MHz, respectively. The
HIGH
LOW
and
measurement levels should be approximately –90dBc; 46dBm is a typical performance of OIP3 at 400MHz. For this setup, the Rohde and Schwarz FSEM30 spectrum analyzer was used. This SA has a typical 20dBm third­order intercept point (TOI). So, the SA input attenuation is set to 20dB with an external 14dB attenuation pad (matches DUT gain), resulting in an attenuation total of 34dB. The system as described can measure OIP3 up to 50dBm.
SIGNAL
GENERATOR
LOW PASS FILTER
(OPTIONAL)
3dB ATTENUATION PAD
(OPTIONAL)
DC POWER
SUPPLY
GND V
(HP8644A)
–5.7dB
MINIMUM LOSS
MATCHING PAD
75Ω50Ω
MINI-CIRCUITS
BMP-5075R
OR
EQUIVALENT
Figure 2. Proper Equipment Setup for Gain and Single-Tone Measurement
+
= 4.75V TO 5.25V
V
CC
–5.7dB
MINIMUM LOSS
MATCHING PAD
75Ω 50Ω
MINI-CIRCUITS
BMP-5075R
EQUIVALENT
OR
COAXIAL CABLE
SPECTRUM
ANALYZER
ROHDE AND
SCHWARZ
FSEM30
DC2032a F02
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Page 3
Quick start proceDure
DEMO MANUAL DC2032A
SIGNAL
GENERATOR 1
COMBINER
MINI-CIRCUITS
ADP-2-9 OR
EQUIVALENT
SIGNAL
GENERATOR 2
(HP8644A)
AMPLIFIER MINI-CIRCUITS, ZHL-2 OR EQUIVALENT
LOW PASS FILTER
6dB ATTENUATION PAD (OPTIONAL)
6dB ATTENUATION PAD (OPTIONAL)
LOW PASS FILTER
AMPLIFIER MINI-CIRCUITS, ZHL-2 OR EQUIVALENT
(HP8644A)
3dB ATTENUATION PAD
–5.7dB
MINIMUM LOSS
MATCHING PAD
MINI-CIRCUITS
BMP-5075R
OR
EQUIVALENT
APPROX.
–7dBm/TONE
75Ω50Ω
APPROX.
–13dBm/TONE
DUT GAIN
APPROX. 14dB
DC POWER
SUPPLY
GND V
+
= 4.75V TO 5.25V
V
CC
MINIMUM LOSS
MATCHING PAD
75Ω 50Ω
MINI-CIRCUITS
EQUIVALENT
1dBm/TONE
–5.7dB
BMP-5075R
OR
14dB ATTENUATION PAD
(MATCHES DUT GAIN)
COAXIAL CABLE
SPECTRUM
ANALYZER
ROHDE AND
SCHWARZ
FSEM30
DC2032a F03
Figure 3. Proper Equipment Setup for IP3 Measurement
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DEMO MANUAL DC2032A
operation
Demo circuit 2032A is a highly linear fixed gain amplifier. To configure the demo circuit 2032A for use in the 75Ω CATV environment, a transformer with 1:1.33 impedance ratio is added at the board’s input and output. These transformers transform the differential 100Ω impedance of the LTC6430-15 to single-ended 75Ω impedance. The frequency range of the circuit is limited by the balun trans formers. Hence, the demo quency range from 50MHz
board has a nominal working fre-
to 1000MHz. Figure 4 shows the
-
S-parameters of demo board.
16
14
12
10
8
|S21| (dB)
6
4
2
0
40
|S21|
240 440
FREQUENCY (MHz)
|S11|
|S22|
640
|S12|
840
Figure 4. Demo Board DC2032A S-Parameters
DC2032a F04
1040
0
–4
–8
–12
–16
–20
–24
–28
–32
|S11|, |S12|, |S22| (dB)
Figure 6 shows the
simplified demo circuit schematic. It
requires a minimum of passive supporting components.
Demo circuit 2032A is shipped with 75Ω F-type connec
­tors (J1 and J2) at both input and output. Depending on the user’s preference, the board may also accept other connector types such as BNC or SMA. Please note that the use of substandard connectors can limit the usable bandwidth of the circuit.
The input and output transformers (T3 and T4) convert the differential to single-ended 75Ω for compatibility with the CATV environment, while preserving all the exceptional characteristics of the LTC6430-15. In addition, the balun’s excellent phase balance and the second order linearity of the LTC6430
-15 combine to further suppress
second order products across the entire CATV band. Figure 5 shows the spurious products (in dBc) within the passband frequency of the output third-order intermodulation (OIM3) and the second harmonic distortion (HD2).
Table 1. Typical Demo Board Performance Summary TA = 25°C, VCC = 5V
OUTPUT
THIRD-ORDER
INTERCEPT
FREQUENCY
(MHz)
50 13.5 46.4 –90.8 –88.1 –87.6 19.5 4.3
100 13.5 46.1 –90.2 –90.1 –82.7 21.3 4.3
200 13.7 45.1 –88.2 –83.5 –79.7 21.4 4.2
300 13.8 44.9 –87.9 –88.4 –73.8 21.4 4.1
400 14.0 45.3 –88.6 –72.0 –71.8 22.0 4.0
500 14.2 46.7 –91.4 –73.7 21.9 4.0
600 14.2 46.7 –91.5 21.9 4.1
700 13.9 46.6 –91.3 21.9 4.4
800 13.7 45.4 –88.8 21.3 4.7
900 13.7 44.9 –87.8 20.9 5.1
1000 13.9 44.5 –87.1 20.5 5.1
Notes: All figures are referenced to J1 (Input Port) and J2 (Output Port).
1. Tw o -tone test condition: Output power level = 1dBm/tone; Tone spacing = 1MHz.
2. Single-tone test condition: Output power level = 8dBm.
3. Small signal noise figure.
POWER GAIN
|S21| (dB)
1
POINT
OIP3 (dBm)
OUTPUT
THIRD-ORDER
INTERMODULATION
OIM3 (dBc)
1
DISTORTION
SECOND
HARMONIC
HD2 (dBc)
2
DISTORTION
THIRD
HARMONIC
HD3 (dBc)
OUTPUT 1dB
COMPRESSION
2
POINT
P1dB (dBm)
NOISE FIGURE
NF (dB)
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4
Page 5
operation
DC2032a F05
DEMO MANUAL DC2032A
0
OIM3, P
–10
HD2, P
–20
–30
–40
–50
–60
OIM3, HD2 (dBc)
–70
–80
–90
–100
0
= 1dBm/TONE
OUT
= 8dBm
OUT
200 400
FREQUENCY (MHz)
600
HD2
OIM3
800
1000
Figure 5. OIM3 and HD2 vs Frequency
The input and output DC blocking capacitors (C1, C2, C7 and C8) are required because this device is internally biased for optimal operation.
The frequency appropriate choke (L1 and L2) and the decoupling capacitors (C9, C10, C11 and C12) provide bias to the RF ±OUT nodes. Only a single 5V supply is necessary for the V
pins on the device.
CC
The input stability networks (C3, C4, R1, R2) are not required since the LTC6430-15 is preceded by a low fre­quency termination from the balun transformer.
able 2 shows
T
the function of each input and output on
the board.
Table 2. DC2032A Board I/O Descriptions
CONNECTOR FUNCTION
J1 IN) Single-Ended Input.
J2 (OUT) Single-Ended Output.
) Positive Supply Voltage Source.
E1 (V
CC
E2 (GND) Negative Supply Ground.
Impedance Matched to 75Ω.
Impedance Matched to 75Ω.
Additional Information
As with any RF device, minimizing ground inductance is critical. Care should be taken with the board layout because of the exposed pad packages. The maximum number of minimum diameter vias holes should be placed underneath the exposed pad. This will ensure good RF ground and low
C5
1000pF
C1
0.047µF
C2
0.047µF
1
2
3
4
5
6
V
T3
6
IN
J1
4
TC1.33-282
+
1
3
V
CC
25
24 23 22 21 20 19
+IN
GND
DNC
DNC
DNC
DNC
DNC
DNC
7
CC
V
GND
LTC6430-15
–IN
GND
V
8 9 10 11 12
C6 1000pF
V
CC
C10 1000pF 0603
L1 560nH
L2 560nH
C7
0.047µF
C8
0.047µF
C11
0.1µF 0603
CC
DNC
DNC
DNC
18
+OUT
17
GND
16
T_DIODE
DNC
GND
–OUT
CC
DNC
DNC
DNC
R3
OPT
15
14
13
C9
0.1µF 0603
T4
C12 1000pF 0603
TC1.33-282
V
CC
3
1
+
V
E1
4.75V TO 5.25V
GND
E2
4
6
OUT
J2
CC
DC2032a F06
Figure 6. Demo Board DC2032A Simplified Schematic
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DEMO MANUAL DC2032A
operation
thermal impedance. Maximizing the copper ground plane will also improve heat spreading and reduce inductance. It is a good idea to cover the via holes with solder mask on
the back side of the PCB to prevent solder from wicking
away from the critical PCB to the exposed pad interface.
The DC2032A has a nominal working frequency range from 50MHz to 1000MHz. It is not intended for operation down
to DC. The lower frequency cutoff is limited by on-chip matching elements.
Setup and Testing Signal Sources
The LTC6430-15 is an amplifier with high linearity per formance; therefore very low. For this reason, it drives most test equipment and test setups to their limits. Consequently, accurate measurement of IP3 for a low distortion IC such as the LTC6430-15 requires certain precautions to be observed in the test setup and testing procedure.
Setup Signal Sources
Figure 3 shows a proposed IP3 test setup. This setup has low phase noise, good reverse isolation, high dynamic range, sufficient harmonic filtering and wideband imped ance matching. The setup is outlined here:
High performance signal generators 1 and 2 (HP8644A)
a.
should be used in the setup. These suggested genera tors have low harmonic distortion and very low phase noise.
b. High linearity amplifiers to improve isolation. They
prevent the two signal generators from cross talking with each other and provide higher output power.
c. A low pass filter to suppress harmonic contents from
interfering with the test signal.
d. The signal combiner from Mini-Circuits ADP-2-9 com
bines the has a typical isolation, use the H-9 signal combiner from MA/COM, which features >40dB isolation and a wider frequency
two isolated input signals. This combiner
, output intermodulation
isolation of 27dB. For better VSWR and
products are
-
-
-
-
range. Passive devices (e.g., combiners) with magnetic elements can contribute nonlinearity to the signal chain and should be used cautiously.
e. The attenuator pads, on all three ports of the signal
combiner, will support further isolation of the two input signal sources. They will reduce reflection and promote maximum power transfer with wideband impedance matching.
f. The minimum loss matching pads, (Mini-Circuits BMP-
5075R or equivalents) are added to the test setup at the DUT input and output. These matching pads transform the DUT impedance from 75Ω to 50Ω to match the characteristic impedance of modern RF instrumentation.
Testing Signal Sources
The testing signal should be evaluated and it is used for measurements. The following outlines the necessary steps to achieve optimization.
a. Apply two independent signals f1 and f2 from signal
generator 1 and signal generator 2 at 240MHz and 241MHz, while setting amplitude = –7dBm per tone at the combined output.
b. Connect the combined signal to the spectrum analyzer
without the DUT (i.e. The combined signal, the minimum loss matching pad, the F-type thru adaptor, the mini mum loss matching pad and the spectrum analyzer;
this point, the spectrum analyzer should read about
at –18dBm/tone for each main tone power).
c. Adjust the spectrum analyzer for the maximum possible
resolution of the intermodulation products amplitude in dBc relative to the main tone power. A narrower resolution bandwidth will take a longer time to sweep. Optimize the dynamic range of the spectrum analyzer by adjusting input attenuation. First increase the spectrum analyzer input attenuation (normally in steps of 5dB or 10dB). If the IMD product levels decrease when the input attenuation is increased, then the input power level was too high for the spectrum analyzer to make a
optimized before
-
6
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operation
DEMO MANUAL DC2032A
valid measurement. In other words, the spectrum ana­lyzer 1st mixer was overloaded IMD products. If the IMD reading holds constant with increased input attenuation, then a sufficient amount of attenuation was present. Adding too much attenu ation will raise the noise floor and bury the intended IMD signal. Therefore, to achieve a stable and valid measurement.
d. In order to achieve a valid measurement result, the
test system must have lower distortion than the DUT intermodulation. For example, to measure a 46dBm OIP3, the measured intermodulation products will be –90dBc below the –19dBm per tone input level and the test system must have intermodulation products approx. –96dBc or better. For best results, the IMD or noise floor should be at least –100dBc before connect ing the DUT.
select just enough attenuation
and producing its own
esting the DUT
T
At this point, –7dBm per tone (–13dBm at the DUT), and the input IMD from the test setup is well suppressed at –96dBc max.
­Furthermore, the SA is setup to measure very low level
IMD components.
a. Insert the DUT, minimum loss matching pads and
output attenuator into the setup, inline between the signal match the DUT gain.
Fine tune the signal generator levels by a small amount
b.
if necessary (<1dB), to keep output power at 1dBm per tone at the amplifier output.
c. Measure output IMD level using the same optimized
-
setup as previous. Based on the output power level of 1dBm per tone, and knowing the IMD level, OIP3 can be calculated.
the input level has been established at
source and SA. The output attenuator should
dc2032af
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DEMO MANUAL DC2032A
parts List
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
1 4 C1, C2, C7, C8, CAP, X5R, 0.047µF, 16V 10%, 0402 AVX, 0402YD473K AT2A
2 0 C13, C15, C16, C18 CAP, X5R, 0.047µF, 16V 10%, 0402 OPT
3 0 C3, C4, CAP, COG, 330pF, 25V 10%, 0402 OPT
4 0 C14, C17 CAP, COG, 330pF, 25V 10%, 0402 OPT
5 2 C5, C6 CAP, X7R, 1000pF, 50V 5%, 0402 AVX, 04025C102J AT2A
6 2 C9, C11 CAP, X5R, 0.1µF, 10V, 10%, 0603 AVX, 0603ZD104K AT2A
7 2 C10, C12 CAP, X7R, 1000pF, 50V 5%, 0603 AVX, 06035C102JAT2A
8 0 C19, C20 CAP, OPT 0603
9 2 E1, E2 TESTPOINT, TURRET, 0.064" MILL-MAX, 2308-2-00-80-00-00-07-0
10 0 JP1 HEADER, 2X6, 0.1" OPT
11 0 JP2, JP3 HEADER, 2X4, 0.1" OPT
12 2 J1, J2, F TYPE END LAUNCH JACK FOR 0.062" PCB, 75Ω AMPHENOL CONNEX, 222181
13 0 J3, J4 F TYPE END LAUNCH JACK FOR 0.062" PCB, 75Ω OPT
14 0 ALTERNATIVE FOR J1,
15 2 L1, L2 INDUCTOR, CHIP, 560nH, 5%, 0603LS-1608 COILCRAFT, 0603LS-561XJLB
16 2 L3, L4 RES, CHIP, 0Ω, 0603 VISHAY, CRCW06030000Z0ED
17 2 R1, R2 RES, CHIP, 0Ω, 0402 VISHAY, CRCW04020000Z0ED
18 0 R4, R5 RES, CHIP, 348, 1%, 0402 OPT
19 0 R3 RES, CHIP, 0Ω, 0402 OPT
20 2 T3, T4, RF TRANSFORMER TC1.33-282
21 0 T1, T2, RF TRANSFORMER TC1.33-282
22 1 U1 BALANCED AMPLIFIER LTC6430AIUF-15, QFN24UF-4X4 LINEAR TECHNOLOGY, LTC6430AIUF-15
J2, J3, J4
TERNATIVE FOR U1 BALANCED AMPLIFIER LTC6430BIUF-15, QFN24UF-4X4 LINEAR TECHNOLOGY, LTC6430BIUF-15
0 AL
BNC END LAUNCH JACK FOR 0.062" PCB, 75Ω AMPHENOL CONNEX, 112801
+
, CASE STYLE: AT 224-1 MINI-CIRCUITS, TC1.33-282+
+
, CASE STYLE: AT 224-1 OPT
8
dc2032af
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schematic Diagram
5
5
4
4
3
3
2
2
1
1
DEMO MANUAL DC2032A
D
ETADNOITPIRCSED APPROVEDECO REV
C
A
2
1 1
www.linear.com
SHEET OF
JOHN C.PRODUCTION2 09-13-12
GND
VCC
OUT
J2
REVISION HISTORY
C19
T4
C7
0.047uF
OPT
L1
560nH
__
C9
0.1uF
0603
VCC
0603
C10
1000pF
L3
0
4
TC1.33-282+
3
R3
6
1
0.047uF
C8
C20
OPT
L2
560nH
OPT
4.75V - 5.25V
E2
E1
VCC
C12
1000pF
0603
C11
0.1uF
0603
L4
0
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
APPROVALS
Fax: (408)434-0507
LTC Condential-For Customer Use Only
DEMO CIRCUIT 2032A
TECHNOLOGY
AK.
PCB DES.
LTC6430IUF-15
Friday, November 02, 2012
CATV AMPLIFIER
IC NO. REV.
SCHEMATIC
N/A
SIZE
TITLE:
JOHN C.
APP ENG.
DATE:
SCALE = NONE
CAL OUT
18
17
15
14
13
JP2
HD2X4-100
J4
6
4
T2
TC1.33-282+
3
1
OPT
7 8
5 6
3 4
1 2
VCC
C5
1000pF
19
20
22
23
24
25
16
DNC
GND
GND
+OUT
DNC
DNC
CNDCND
VCC
GND
+IN
GND
DNC
DNC
2
1
-OUT
T_DIODE
U1
LTC6430-15
DNC
DNC
DNC
DNC
5
4
3
6
DNC
DNC
VCC
GND
-IN
OPT
JP3
HD2X4-100
7 8
12
11
10 21
9
8
7
5 6
3 4
1 2
CUSTOMER NOTICE
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
C6
1000pF
VCC
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY T O
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
1
TC1.33-282+
6
C15
0.047uF
R5
348
C14
330pF
C13
0.047uF
3
4
J3
C18
0.047uF
R4
348
C17
330pF
C16
0.047uF
T1
CAL IN
OPTIONAL CIRCUIT
D
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.
R1
0
C3
OPT
C1
JP1
1 2
3 4
5 6
7 8
9 10
OPT
HD2X6-100
0.047uF
1
TC1.33-282+
T3
6
11 12
3
4
J1
C4
OPT
R2
0
C2
0.047uF
IN
NOTE: UNLESS OTHERWISE SPECIFIED
C
B B
A
1. ALL RESISTORS ARE IN OHMS, 0402.
ALL CAPACITORS ARE 0402.
2. ALL DNC PINS ON U1 ARE FOR LINEAR USE ONLY
dc2032af
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DEMO MANUAL DC2032A
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LT C ) 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 LT C 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. LT C assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LT C 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
Linear Technology Corporation
10
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
dc2032af
LT 0313 • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2013
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