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DEMO MANUAL DC1710A-A
Description
LTC5590
Dual 600MHz to 1.7GHz
High Dynamic Range
Downconverting Mixer
Demonstration circuit 1710A-A is a dual 600MHz to 1.7GHz
high dynamic range downconverting mixer featuring the
LT C
®
5590. The LTC5590 is part of a family of dual-channel
high dynamic range, high gain downconverting mixers
covering the 600MHz to 4.5GHz frequency range. The
demo circuit 1710A-A and the LTC5590 are optimized for
600MHz to 1.7GHz RF applications. The LO frequency
must fall within the 700MHz to 1.5GHz range for optimum
performance. A typical application is a LTE or GSM receiver
with a 700MHz to 915MHz RF input and high side LO.
The LTC5590 is designed for 3.3V operation, however the
IF amplifiers can be powered by 5V for the highest P1dB. A
low current mode is provided for power savings, and each
of the mixer channels has independent shutdown control. 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.
performance summary
The LTC5590’s high conversion gain and high dynamic
range enable the use of lossy IF filters in high-selective
receiver designs, while minimizing the total solution cost,
board space and system-level variation.
High Dynamic Range Dual Downconverting Mixer Family
DEMO # IC PART # RF RANGE LO RANGE
DC1710A-A LTC5590 600MHz to 1.7GHz 700MHz to 1.5GHz
DC1710A-A LTC5590 1.3GHz to 2.3GHz 1.4GHz to 2.1GHz
DC1710A-C LTC5592 1.6GHz to 2.7GHz 1.7GHz to 2.5GHz
DC1710A-D LTC5593 2.3GHz to 4.5GHz 2.1GHz to 4.2GHz
Design files for this circuit board are available at
http://www.linear.com/demo
TC = 25°C, VCC = VCCIF = 3.3V, ENA = ENB = High, ISEL = Low, PLO = 0dBm,
PRF = –3dBm (Δf = 2MHz for two-tone IIP3 tests), unless otherwise noted. (Note 1)
PARAMETER CONDITIONS VALUE UNITS
VCC Supply Voltage Range 3.1 to 3.5 V
VCCIF Supply Voltage Range 3.1 to 5.3 V
Total Supply Current (VCC + VCCIF), Normal Power Mode Both Mixer Channels Enabled 379 mA
Total Supply Current (VCC + VCCIF), Low Power Mode Both Mixer Channels Enabled, ISEL = High 239 mA
Total Supply Current During Shutdown ENA = ENB = Low ≤500 µA
ENA, ENB Input High Voltage (Channel Enabled) >2.5 V
ENA, ENB Input Low Voltage (Channel Disabled) <0.3 V
ENA, ENB Input Current –0.3V to VCC + 0.3V –20 to 30 µA
ISEL Input High Voltage (Low Power Mode) >2.5 V
ISEL Input Low Voltage (Normal Power Mode) <0.3 V
ISEL Input Current –0.3V to VCC + 0.3V –20 to 30 µA
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DEMO MANUAL DC1710A-A
PARAMETER CONDITIONS VALUE UNITS
LO Input Frequency Range 700 to 1500 MHz
LO Input Return Loss Z0 = 50Ω, fLO = 700MHz to 1500MHz >12 dB
LO Input Power Range fLO = 700MHz to 1500MHz –4 to 6 dBm
RF Input Frequency Range Low Side LO
High Side LO
1100 to 1700
600 to 1100
MHz
MHz
RF Input Return Loss Z0 = 50Ω, fRF = 700MHz to 1400MHz >12 dB
IF Output Frequency Can be re-matched for other frequencies 190 MHz
IF Output Return Loss Z0 = 50Ω >12 dB
LO to RF Leakage fLO = 700MHz to 1500MHz < –36 dBm
LO to IF Leakage fLO = 700MHz to 1500MHz < –26 dBm
RF to LO Isolation fRF = 600MHz to 1700MHz >56 dB
RF to IF Isolation fRF = 600MHz to 1700MHz >17 dB
Channel-to-Channel Isolation fRF = 600MHz to 1200MHz
fRF = 1200MHz to 1700MHz
>50
>45
dB
dB
High Side LO Downmixer Application: ISEL = Low, RF = 700MHz to 1100MHz, IF = 190MHz, fLO = fRF + fIF
Conversion Gain RF = 700MHz
RF = 900MHz
RF = 1100MHz
8.6
8.7
8.5
dB
dB
dB
Input 3rd Order Intercept RF = 700MHz
RF = 900MHz
RF = 1100MHz
25.3
26
24.8
dBm
dBm
dBm
SSB Noise Figure RF = 700MHz
RF = 900MHz
RF = 1100MHz
9.3
9.7
9.9
dB
dB
dB
SSB Noise Figure Under Blocking fRF = 900MHz, fLO = 1090MHz, fBLOCK = 800MHz,
PBLOCK = 5dBm
PBLOCK = 10dBm
15.6
21.2
dB
dB
2LO – 2RF Output Spurious Product
(fRF = fLO – fIF/2)
fRF = 995MHz at –10dBm, fLO = 1090MHz,
fIF = 190MHz
–77 dBc
3LO – 3RF Output Spurious Product
(fRF = fLO – fIF/3)
fRF = 1026.67MHz at –10dBm, fLO = 1090MHz,
fIF = 190MHz
–77 dBc
Input 1dB Compression fRF = 900MHz, VCCIF = 3.3V
fRF = 900MHz, VCCIF = 5V
10.7
14.1
dBm
dBm
Low Power Mode, High Side LO Downmixer Application: ISEL = High, RF = 700MHz to 1100MHz, IF = 190MHz, fLO = fRF + fIF
Conversion Gain RF = 900MHz 7.7 dB
Input 3rd Order Intercept RF = 900MHz 21.5 dBm
SSB Noise Figure RF = 900MHz 9.9 dB
Input 1dB Compression fRF = 900MHz, VCCIF = 3.3V
fRF = 900MHz, VCCIF = 5V
10.4
10.9
dBm
dBm
performance summary
TC = 25°C, VCC = VCCIF = 3.3V, ENA = ENB = High, ISEL = Low, PLO = 0dBm,
PRF = –3dBm (Δf = 2MHz for two-tone IIP3 tests), unless otherwise noted. (Note 1)
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DEMO MANUAL DC1710A-A
performance summary
TC = 25°C, VCC = VCCIF = 3.3V, ENA = ENB = High, ISEL = Low, PLO = 0dBm,
PRF = –3dBm (Δf = 2MHz for two-tone IIP3 tests), unless otherwise noted. (Note 1)
PARAMETER CONDITIONS VALUE UNITS
Low Side LO Downmixer Application: ISEL = Low, RF = 1100MHz to 1600MHz, IF = 190MHz, fLO = fRF – fIF
Conversion Gain RF = 1200MHz
RF = 1400MHz
RF = 1600MHz
8.6
8.4
7.7
dB
dB
dB
Input 3rd Order Intercept RF = 1200MHz
RF = 1400MHz
RF = 1600MHz
27.5
27.3
27.2
dBm
dBm
dBm
SSB Noise Figure RF = 1200MHz
RF = 1400MHz
RF = 1600MHz
9.9
9.7
10.4
dB
dB
dB
SSB Noise Figure Under Blocking fRF = 1400MHz, fLO = 1210MHz, fBLOCK = 1500MHz,
PBLOCK = 5dBm
PBLOCK = 10dBm
15
20.8
dB
dB
2RF – 2LO Output Spurious Product
(fRF = fLO + fIF/2)
fRF = 1305MHz at –10dBm, fLO = 1210MHz,
fIF = 190MHz
–72 dBc
3RF – 3LO Output Spurious Product
(fRF = fLO + fIF/3)
fRF = 1273.33MHz at –10dBm, fLO = 1210MHz,
fIF = 190MHz
–72 dBc
Input 1dB Compression fRF = 1400MHz, VCCIF = 3.3V
fRF = 1400MHz, VCCIF = 5V
11
14.4
dBm
dBm
Note 1: Subject to change without notice. Refer to the latest LTC5590 data sheet for most-up-to-date specifications.
ABSOLUTE MAXIMUM RATINGS
NOTE. Stresses beyond Absolute Maximum Ratings may
cause permanent damage to the device. Exposure to any
Absolute Maximum Rating condition for extended periods
may affect device reliability and lifetime.
Supply Voltage (VCC) ...............................................4.0V
IF Supply Voltage (VCCIF) ........................................ 5.5V
Enable Voltage (ENA, ENB) .............–0.3V to VCC + 0.3V
Bias Adjust Voltage (IFBA, IFBB) .....–0.3V to VCC + 0.3V
Power Select Voltage (ISEL) ...........–0.3V to VCC + 0.3V
LO Input Power (300MHz to 3GHz) ........................9dBm
RFA, RFB Input Power (300MHz to 3GHz) ...........15dBm
Operating Temperature Range (TC) ........ –40°C to 105°C
SUPPLY VOLTAGE RAMPING
Fast ramping of the supply voltage can cause a current
glitch in the internal ESD protection circuits. Depending on
the supply inductance, this could result in a supply volt-
age transient that exceeds the maximum rating. A supply
voltage ramp time of greater than 1ms is recommended.
DetaileD Description
Do not clip powered test leads directly onto the demon-
stration circuit’s VCC and VCCIF turrets. Instead, make
all necessary connections with power supplies turned off,
then increase to operating voltage.
ENABLE FUNCTION
The LTC5590’s two mixer channels can be independently
enabled or disabled. When the Enable voltage (ENA or ENB)
is logic high (>2.5V), the corresponding mixer channel is
enabled. When the Enable voltage is logic low (<0.3V),
the mixer channel is disabled. The voltages at the enable
pins should never fall below –0.3V or exceed the power
supply voltage by more than 0.3V. The Enable pins must
be pulled high or low. If left floating, the on/off state of
the IC will be indeterminate. A logic table for the Enable
control (ENA, ENB) is shown in Table 1.
Table 1. Enable Control Logic Table
ENA, ENB MIXER CHANNEL STATE
Low Disabled
High Enabled
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DEMO MANUAL DC1710A-A
LOW POWER MODE
The LTC5590 features a low power mode, which allows
the flexibility to choose a 37% total power saving when
lower RF performance is acceptable. When the ISEL volt-
age is logic low (<0.3V), both mixer channels operate at
nominal power and best performance. When the ISEL
voltage is logic high (>2.5V), both mixer channels are in
low power mode and operate with reduced performance.
The ISEL voltage should never fall below –0.3V or exceed
the power supply voltage by more than 0.3V. The ISEL pin
must be pulled low or high. If left floating, the operating
state of the IC will be indeterminate. A logic table for ISEL
is shown in Table 2.
Table 2. ISEL Logic Table
ISEL OPERATING MODE
Low Normal power, best performance
High Low power, reduced performance
RF INPUTS
Demonstration circuit 1710A-A’s RF inputs of channel
A and channel B are identical. For the RF inputs to be
matched, the appropriate LO signal must be applied. The
RF inputs’ impedance is dependent on LO frequency, but
the demonstration circuit 1710A-A’s RF inputs are well
matched to 50Ω from 700MHz to 1.4GHz, with better than
12dB return loss, when a 700MHz to 1.5GHz LO signal is
applied. Outside this frequency range, the desired imped-
ance match can be obtained through the adjustment of
external matching component values.
LO INPUT
The LTC5590’s LO amplifier is optimized for the 700MHz
to 1.5GHz LO frequency range. LO frequencies above and
below this frequency range may be used with degraded
performance. The LO input is always 50Ω-matched when
VCC is applied to the chip, even when one or both of the
channels is disabled. The nominal LO input level is 0dBm.
The LO input power range is between –4dBm and 6dBm.
IF OUTPUTS
Demonstration circuit 1710A-A features single-ended,
50Ω-matched IF outputs for 190MHz. The channel A and
the channel B IF outputs are identical, and the impedance
matching is realized with a bandpass topology using IF
transformers as shown in Figure 1. Only channel A is
shown for clarity and simplicity.
Demonstration circuit 1710A-A can be easily reconfigured
for other IF frequencies by simply replacing inductors L1A,
L2A, L1B and L2B. Inductor values for several common
IF frequencies are presented in Table 3, and return losses
are plotted in Figure 2. An external load resistor, R2A, can
be used to improve impedance matching if desired.
Table 3. Inductor Values vs. IF Frequencies
IF FREQUENCY (MHz) L1A, L2A, L1B, L2B (nH)
140 270
190 150
240 100
300 56
380 33
450 22
For IF frequencies below 90MHz, the values of the induc-
tors become unreasonably high, and the lowpass topol-
ogy shown in Figure 3 is preferred. See the LTC5590 data
sheet for details.
Figure 1. IF Output with Bandpass Matching
DetaileD Description
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DEMO MANUAL DC1710A-A
DetaileD Description
Demonstration circuit 1710A-A’s IF outputs can be easily
converted to lowpass matching. Follow the procedures
below, and refer to Figure 3 and Figure 4 to modify the
channel A IF output. Modifications for Channel B are similar.
a. Remove existing L1A, L2A, and C7A.
b. Cut the traces leading to the IF transformer close to
the pads of L1A and L2A.
c. Insert series inductors onto the cut traces.
d. Install a 0Ω jumper between the pads of C5A and
C7A.
e. Install resistor at location R2A.
f. Install C9A next to, or on top of, R2A.
Figure 2. IF Output Return Loss with Bandpass Matching
Figure 3. IF Output with Lowpass Matching
Figure 4. IF Output with Lowpass Matching
measurement equipment anD setup
The LTC5590 is a dual high dynamic range downconverting
mixer IC with very high input 3rd order intercept. Accuracy
of its performance measurement is highly dependent on
equipment setup and measurement technique. The recom-
mended measurement setups are presented in Figure 5,
Figure 6, and Figure 7. The following precautions should
be observed:
1. Use high performance signal generators with low har-
monic output and low phase noise, such as the Rohde &
Schwarz SME06. Filters at the signal generators’ outputs
may also be used to suppress higher-order harmonics.
2. A high quality RF power combiner that provide broadband
50Ω-termination on all ports and have good port-to-port
isolation should be used, such as the MCLI PS2-17.
3. Use high performance amplifiers with high IP3 and high
reverse isolation, such as the Mini-Circuits ZHL-1042J,
on the outputs of the RF signal generators to improve
source isolation to prevent the sources from modulating
each other and generating intermodulation products.
4. Use attenuator pads with good VSWR on the demon-
stration circuit’s input and output ports to improve
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DEMO MANUAL DC1710A-A
quick start proceDure
measurement equipment anD setup
source and load match to reduce reflections, which
may degrade measurement accuracy.
5. A high dynamic range spectrum analyzer, such as the
Rohde & Schwarz FSEM30, should be used for linearity
measurement.
6. Use narrow resolution bandwidth (RBW) and engage
video averaging on the spectrum analyzer to lower the
displayed average noise level (DANL) in order to improve
sensitivity and to increase dynamic range. However, the
trade off is increased sweep time.
7. Spectrum analyzers can produce significant internal
distortion products if they are overdriven. Generally,
spectrum analyzers are designed to operate at their best
with about –30dBm at their input filter or preselector.
Sufficient spectrum analyzer input attenuation should be
used to avoid saturating the instrument, but too much
attenuation reduces sensitivity and dynamic range.
8. Before taking measurements, the system performance
should be evaluated to ensure that:
a. Clean input signals can be produced. The two-tone
signals’ OIP3 should be at least 15dB better than the
DUT’s IIP3.
b. The spectrum analyzer’s internal distortion is mini-
mized.
c. The spectrum analyzer has enough dynamic range
and sensitivity. The measurement system’s IIP3
should be at least 15dB better than the DUT’s OIP3.
d. The system is accurately calibrated for power and
frequency.
A SPECIAL NOTE ABOUT RF TERMINATION
The LTC5590 consists of high linearity passive double-
balanced mixer cores and IF buffer amplifiers. Due to the
bidirectional nature of all passive mixers the LO±IF mixing
products, also referred to as pseudo-image spurs, are
always present at the RF input, typically at a level 12dB
below the RF input signal. Mismatched impedances at the
pseudo-image spur frequencies, such as when filters are
used for SSB NF measurements, can significantly impact
the linearity and noise figure measurements. To avoid
interference from the pseudo-image spurs, terminate the
RF input port with an isolator, diplexer, or attenuator. In the
recommended measurement setups presented in Figure 6
and Figure 7, the 6dB attenuator pad at the demonstration
circuit’s RF input serves this purpose.
Demonstration circuit 1710A-A is easy to set up to evaluate
the performance of the LTC5590. Refer to Figure 5, Figure 6,
and Figure 7 for proper equipment connections. The fol-
lowing procedures describe performing measurements on
Mixer Channel A. The measurement procedures for Mixer
Channel B are identical.
NOTE. Care should be taken to never exceed absolute
maximum input ratings. Make all connections with RF
and DC power off.
RETURN LOSS MEASUREMENTS
1. Configure the Network Analyzer for return loss meas-
urement, set appropriate frequency range, and set the
test signal to –3dBm.
2. Calibrate the Network Analyzer.
3. Connect all test equipment as shown in Figure 5 with
the signal generator and the DC power supply turned off.
4. Increase the DC power supply voltage to 3.3V, and verify
that the total current consumption is close to the figure
listed in the Typical Demonstration Circuit Performance
Summary. The supply voltage should be confirmed at
the demo board VCC, VCCIF and GND terminals to ac-
count for lead ohmic losses.
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DEMO MANUAL DC1710A-A
quick start proceDure
5. With the LO signal applied, and all unused demo board
ports terminated in 50Ω, measure return losses of the
RFA input and IFA output ports.
6. Set the test signal to 0dBm, and re-calibrate the Net-
work Analyzer.
7. Terminate all unused demo board ports in 50Ω. Measure
return losses of the LO input port.
RF PERFORMANCE MEASUREMENTS
1. Connect all test equipment as shown in Figure 6 with the
signal generators and the DC power supply turned off.
2. Increase the DC power supply voltage to 3.3V, and verify
that the total current consumption is close to the figure
listed in the Typical Demonstration Circuit Performance
Summary. The supply voltage should be confirmed at
the demo board VCC, VCCIF and GND terminals to ac-
count for lead ohmic losses.
3. Set the LO source (Signal Generator 1) to provide a
0dBm CW signal at appropriate LO frequency to the
demo board LO input port.
4. Set the RF sources (Signal Generators 2 and 3) to provide
two –3dBm CW signals, 2MHz apart, at the appropriate
RF frequencies to the demo board RFA input port.
5. Measure the resulting IFA output on the Spectrum
Analyzer:
a. The wanted two-tone IF output signals are at:
fIF1 = fRF1 – fLO, and
fIF2 = fRF2 – fLO for low side LO,
and
fIF1 = fLO – fRF1, and
fIF2 = fLO – fRF2 for high side LO
b. The 3rd order intermodulation products which are
closest to the wanted IF signals are used to calculate
the Input 3rd Order Intercept:
fIM3,1 = fRF1 – fLO - ΔIF, and
fIM3,2 = fRF2 – fLO + ΔIF for low side LO,
and
fIM3,1 = fLO – fRF1 + ΔIF, and
fIM3,2 = fLO – fRF2 - ΔIF for high side LO
Where ΔIF = fRF2 – fRF1.
6. Calculate Input 3rd Order Intercept:
IIP3 = (ΔIM3)/2 + PRF
Where ΔIM3 = PIF - PIM3. PIF is the lowest IF output
signal power at either fIF1 or fIF2. PIM3 is the highest 3rd
order intermodulation product power at either fIM3,1 or
fIM3,2. PRF is the per tone RF input power.
7. Turn off one of the RF signal generators, and measure
Conversion Gain, RF to IF isolation, LO to IF leakage,
and Input 1dB compression point.
NOISE FIGURE MEASUREMENT
1. Configure and calibrate the noise figure meter for mixer
measurements.
2. Connect all test equipment as shown in Figure 7 with
the signal generator and the DC power supply turned
off.
3. Increase the DC power supply voltage to 3.3V, and verify
that the total current consumption is close to the figure
listed in the Typical Demonstration Circuit Performance
Summary. The supply voltage should be confirmed at
the demo board VCC, VCCIF and GND terminals to ac-
count for lead ohmic losses.
4. Measure the single-sideband noise figure.
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DEMO MANUAL DC1710A-A
quick start proceDure
Figure 5. Proper Equipment Setup for Return Loss Measurements
Figure 6. Proper Equipment Setup for RF Performance Measurements
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DEMO MANUAL DC1710A-A
quick start proceDure
Figure 7. Proper Equipment Setup for Noise Figure Measurement
parts list
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
1 2 C1A, C1B CAP., C0G, 100pF, ±1%, 50V, 0402 AVX, 04025A101FAT
2 1 C2 CAP., C0G, 10pF, ±1%, 50V, 0402 AVX, 04025A100FAT
3 4 C3A, C3B, C5A, C5B CAP., C0G, 22pF, ±1%, 50V, 0402 AVX, 04025A220FAT
4 2 C4, C6 CAP., X5R, 1µF, ±10%, 10V, 0603 AVX, 0603ZD105KAT
5 2 C7A, C7B CAP., X7R, 1000pF, ±5%, 50V, 0402 AVX, 04025C102JAT
6 0 C8A, C8B, C9A, C9B (OPT) CAP., 0402, OPTION
7 7 E1, E2, E3, E4, E5, E6, E7 TESTPOINT, TURRET, 0.061" MILL-MAX, 2308-2-00-80-00-00-07-0
8 5 J1, J2, J3, J5, J6 CONN., SMA, 50Ω, EDGE-LAUNCH AMPHENOL CONNEX, 132357
9 4 L1A, L1B, L2A, L2B IND., WIRE-WOUND, 150nH, ±2%, 0603 COILCRAFT, 0603CS-R15XGLW
10 2 L3A, L3B RES., CHIP, 0Ω, 0603 VISHAY, CRCW06030000Z0EA
11 0 R1A, R1B, R2A, R2B (OPT) RES., 0402, OPTION
12 2 T1A, T1B TRANSFORMER, SMT, RF WIDEBAND, 4:1 MINI-CIRCUITS, TC4-1W-7ALN+
13 1 U1 IC., LTC5590IUH, QFN 5X5 LINEAR TECHNOLOGY, LTC5590IUH#PBF
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DEMO MANUAL DC1710A-A
schematic Diagram
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
A A
B B
C C
D D
04-28-11
TECHNOLOGY
TECHNOLOGY
TECHNOLOGY
*
*
*
*
*
*
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DEMO MANUAL DC1710A-A
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 representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
pcb layout
Layer 1. Top Layer Layer 2. Ground Plane
Layer 3. Power Plane Layer 4. Bottom Layer
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DEMO MANUAL DC1710A-A
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
LINEAR TECHNOLOGY CORPORATION 2011
LT 1011 • PRINTED IN USA
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 applica-
tion engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
